Climate of Porto
{{Short description|none}}
{{climate chart
| Porto
| 5.2 | 13.8 | 147.1
| 5.9 | 15.0 | 110.5
| 7.8 | 17.4 | 95.6
| 9.1 | 18.1 | 117.6
| 11.6 | 20.1 | 89.6
| 14.5 | 23.5 | 39.9
| 15.9 | 25.3 | 20.4
| 15.9 | 25.7 | 32.9
| 14.7 | 24.1 | 71.9
| 12.2 | 20.7 | 158.3
| 8.9 | 17.1 | 172.0
| 6.9 | 14.4 | 181.0
|float=right
|source=Instituto de Meteorologia }}
Porto and its metropolitan area feature a Mediterranean climate (Köppen: Csb) with mild wet winters and warm dry summers. According to the Troll-Paffen climate classification, Porto has a warm-temperate subtropical climate (Warmgemäßigt-subtropisches Zonenklima),[http://web.tiscali.it/linnets/Troll-Paffen.jpg Climatic map by Istituto Geografico De Agostini, according to Troll-Paffen climate classification] {{webarchive |url=https://web.archive.org/web/20121004052732/http://web.tiscali.it/linnets/Troll-Paffen.jpg |date=October 4, 2012 }} and a subtropical climate according to Siegmund/Frankenberg.[http://www.ph-heidelberg.de/geographie/forschung-und-entwicklung/klimakarte-der-erde.html Die Klimatypen der Erde] - Pädagogische Hochschule in Heidelberg Porto is the wettest major city with a Mediterranean climate.
Classifications
{{Schemebox
|city =Porto
| initial_k ={{KoppenClimate|Csb}}
| description_k =warm-summer Mediterranean climate
| initial_t ={{TrewarthaClimate|Cs}}
| description_t =Subtropical dry summer
| initial_a ={{n/a}}
| description_a =Subtropical climate
| initial_s = {{n/a}}
| description_s =Marine west coast climate
| source_tw ={{cite web |last1=Feddema (2005) |first1=Johannes |title=A Revised Thornthwaite-Type Global Climate Classification |url=https://www.researchgate.net/figure/The-global-Thornthwaite-moisture-regions_fig1_250171991 |publisher=ResearchGate |access-date=28 January 2021}}
| initial_tw ={{center|B4 B'2}}
| description_tw =Humid Mesothermal
| source_n ={{Cite web|url=https://www.spektrum.de/lexikon/geographie/klimaklassifikation/4159|title=Klimaklassifikation|website=www.spektrum.de|language=de|access-date=27 June 2020}}{{Cite web|url=https://www.klett.de/sixcms/media.php/klett72.a.427.de/upload/klimazonen_neef.jpg|title=Klimazonen nach E. Neef (1989)|publisher=Klett-Perthes}}
| initial_n ={{n/a}}
| description_n = West coast maritime / wet winter climate
}}
Temperature
=Normals=
Porto has generally moderate temperatures. The average annual high is around {{convert|20|C}} and average low around {{convert|11|C}}. The climate is also only mildly seasonal, from a maxima of {{convert|14|C}} in January to {{convert|25|-|26|C}} in August, while minima is around {{convert|5|-|6|C}} in January and {{convert|15|-|16|C}} in July and August. In its metropolitan area, January lows can vary between {{convert|7|C}} at the coast and {{convert|3|C}} on the mountainous interior, and August highs vary between {{convert|24|C}} at the coast and {{convert|28|C}} in the interior near the Douro valley.{{cite web |title=ClimaAlterações Climáticas em Portugal |url=http://portaldoclima.pt/pt/ |publisher=Portal do Clima, IPMA |access-date=28 January 2021}}
{{Weather box
|location= Porto (Fontainhas), elevation: {{convert|93|m|abbr=on|disp=or}}, 1981-2010 normals
|single line = Y
|metric first = yes
|Jan high C = 13.8
|Feb high C = 15.0
|Mar high C = 17.4
|Apr high C = 18.1
|May high C = 20.1
|Jun high C = 23.5
|Jul high C = 25.3
|Aug high C = 25.7
|Sep high C = 24.1
|Oct high C = 20.7
|Nov high C = 17.1
|Dec high C = 14.4
|year high C = 19.6
|Jan mean C = 9.5
|Feb mean C = 10.4
|Mar mean C = 12.6
|Apr mean C = 13.7
|May mean C = 15.9
|Jun mean C = 19.0
|Jul mean C = 20.6
|Aug mean C = 20.8
|Sep mean C = 19.5
|Oct mean C = 16.4
|Nov mean C = 13.0
|Dec mean C = 10.7
|year mean C = 15.2
|Jan low C = 5.2
|Feb low C = 5.9
|Mar low C = 7.8
|Apr low C = 9.1
|May low C = 11.6
|Jun low C = 14.5
|Jul low C = 15.9
|Aug low C = 15.9
|Sep low C = 14.7
|Oct low C = 12.2
|Nov low C = 8.9
|Dec low C = 6.9
|year low C = 10.7
|source 1= IPMA{{cite web |url=http://www.ipma.pt/pt/oclima/normais.clima/1981-2010/014/ |title=Normais Climatológicas – 1981–2010(provisórias) – Porto |publisher=Instituto de Meteorologia |language = pt |access-date= 19 January 2013}}
}}
{{Weather box
|location= Porto (Fontainhas), elevation: {{convert|93|m|abbr=on|disp=or}}, 1971-2000 normals
|single line = Y
|metric first = yes
|collapsed = Y
|Jan high C = 13.5
|Feb high C = 14.8
|Mar high C = 16.8
|Apr high C = 17.7
|May high C = 19.4
|Jun high C = 22.8
|Jul high C = 25.0
|Aug high C = 25.0
|Sep high C = 23.7
|Oct high C = 20.4
|Nov high C = 16.8
|Dec high C = 14.4
|year high C =
|Jan mean C = 9.3
|Feb mean C = 10.4
|Mar mean C = 11.9
|Apr mean C = 13.2
|May mean C = 15.2
|Jun mean C = 18.3
|Jul mean C = 20.2
|Aug mean C = 20.1
|Sep mean C = 18.9
|Oct mean C = 16.0
|Nov mean C = 12.6
|Dec mean C = 10.6
|year mean C =
|Jan low C = 5.0
|Feb low C = 5.9
|Mar low C = 7.1
|Apr low C = 8.6
|May low C = 11.0
|Jun low C = 13.8
|Jul low C = 15.5
|Aug low C = 15.2
|Sep low C = 14.1
|Oct low C = 11.5
|Nov low C = 8.3
|Dec low C = 6.8
|year low C =
|source 1= IPMA{{cite web |title=Porto Serra do Pilar 1971-2000 normals and extremes |url=http://www.ipma.pt/bin/file.data/climate-normal/cn_71-00_PORTO_SERRA_PILAR.pdf |publisher=IPMA |access-date=28 January 2021}}
}}
{{Weather box
|location= Porto São Gens, elevation: {{convert|90|m|abbr=on|disp=or}}, 1971-2000
|single line = Y
|metric first = yes
|collapsed = Y
|Jan high C = 13.6
|Feb high C = 14.6
|Mar high C = 16.4
|Apr high C = 17.3
|May high C = 19.0
|Jun high C = 22.3
|Jul high C = 24.4
|Aug high C = 24.5
|Sep high C = 23.3
|Oct high C = 20.2
|Nov high C = 16.9
|Dec high C = 14.5
|year high C =
|Jan mean C = 9.7
|Feb mean C = 10.7
|Mar mean C = 12.1
|Apr mean C = 13.1
|May mean C = 15.0
|Jun mean C = 17.9
|Jul mean C = 19.8
|Aug mean C = 19.7
|Sep mean C = 18.7
|Oct mean C = 15.9
|Nov mean C = 12.8
|Dec mean C = 10.8
|year mean C =
|Jan low C = 5.7
|Feb low C = 6.8
|Mar low C = 7.8
|Apr low C = 8.9
|May low C = 11.0
|Jun low C = 13.5
|Jul low C = 15.2
|Aug low C = 14.8
|Sep low C = 14.1
|Oct low C = 11.6
|Nov low C = 8.8
|Dec low C = 7.1
|year low C =
|source 1= IPMA{{cite web |title=Porto São Gens 1971-2000 normals and extremes |url=http://www.ipma.pt/bin/file.data/climate-normal/cn_71-00_PORTO_SAO_GENS.pdf |publisher=IPMA |access-date=28 January 2021}}
}}
{{Weather box
|location= Francisco Sá Carneiro Airport, elevation: {{convert|70|m|abbr=on|disp=or}}, 1971-2000
|single line = Y
|metric first = yes
|collapsed = Y
|Jan high C = 13.8
|Feb high C = 14.7
|Mar high C = 16.5
|Apr high C = 17.3
|May high C = 19.0
|Jun high C = 22.1
|Jul high C = 24.1
|Aug high C = 24.2
|Sep high C = 23.1
|Oct high C = 20.1
|Nov high C = 16.8
|Dec high C = 14.6
|year high C =
|Jan mean C = 9.6
|Feb mean C = 10.5
|Mar mean C = 11.9
|Apr mean C = 13.0
|May mean C = 14.9
|Jun mean C = 17.7
|Jul mean C = 19.4
|Aug mean C = 19.3
|Sep mean C = 18.4
|Oct mean C = 15.8
|Nov mean C = 12.7
|Dec mean C = 10.8
|year mean C =
|Jan low C = 5.4
|Feb low C = 6.4
|Mar low C = 7.3
|Apr low C = 8.6
|May low C = 10.8
|Jun low C = 13.3
|Jul low C = 14.7
|Aug low C = 14.4
|Sep low C = 13.6
|Oct low C = 11.4
|Nov low C = 8.6
|Dec low C = 7.0
|year low C =
|source 1= IPMA{{cite web |title=Porto Pedras Rubras 1971-2000 normals and extremes |url=http://www.ipma.pt/bin/file.data/climate-normal/cn_71-00_PORTO_PEDRAS_RUBRAS.pdf |publisher=IPMA |access-date=28 January 2021}}
}}
=Extremes=
Due to its coastal position, temperatures below freezing ({{convert|0|C}}) are rare, and frosts are never severe. Porto is placed in the USDA hardiness zone 10a.{{cite web |url=https://www.repository.utl.pt/bitstream/10400.5/4069/2/Disserta%c3%a7%c3%a3o_texto.pdf |title=Hardiness zones of Portugal|publisher= Repositório Institucional da Universidade de Lisboa. Check pages 60-62}} The lowest temperature ever recorded in the city was {{convert|-4.1|C}} on 11 January 1941.[https://www.ipma.pt/pt/oclima/extremos.clima/ Extremes] {{Webarchive|url=https://web.archive.org/web/20170621130444/http://www.ipma.pt/pt/oclima/extremos.clima |date=21 June 2017}} Instituto Português do Mar e da Atmosfera, IPMA
{{Weather box
|location= Porto (Fontainhas), elevation: {{convert|93|m|abbr=on|disp=or}}, 1981-2010
|single line = Y
|metric first = yes
|Jan record high C = 23.3
|Feb record high C = 23.2
|Mar record high C = 28.5
|Apr record high C = 30.2
|May record high C = 34.1
|Jun record high C = 38.7
|Jul record high C = 40.0
|Aug record high C = 40.9
|Sep record high C = 36.9
|Oct record high C = 32.2
|Nov record high C = 26.3
|Dec record high C = 24.8
|year record high C =
|Jan record low C = -3.3
|Feb record low C = -2.8
|Mar record low C = -1.6
|Apr record low C = -0.1
|May record low C = 3.3
|Jun record low C = 5.6
|Jul record low C = 9.5
|Aug record low C = 8.0
|Sep record low C = 5.5
|Oct record low C = 1.4
|Nov record low C = -0.3
|Dec record low C = -1.2
|year record low C =
|source 1= IPMA
}}
{{Weather box
|location= Porto (Fontainhas), elevation: {{convert|93|m|abbr=on|disp=or}}, 1971-2000
|single line = Y
|metric first = yes
|collapsed = Y
|Jan record high C = 22.3
|Feb record high C = 23.2
|Mar record high C = 28.0
|Apr record high C = 28.9
|May record high C = 34.1
|Jun record high C = 38.7
|Jul record high C = 38.3
|Aug record high C = 37.6
|Sep record high C = 36.9
|Oct record high C = 32.2
|Nov record high C = 26.3
|Dec record high C = 24.8
|year record high C =
|Jan record low C = -3.3
|Feb record low C = -2.8
|Mar record low C = -1.3
|Apr record low C = 0.1
|May record low C = 3.3
|Jun record low C = 5.6
|Jul record low C = 9.5
|Aug record low C = 8.0
|Sep record low C = 5.5
|Oct record low C = 1.4
|Nov record low C = -0.3
|Dec record low C = -1.2
|year record low C =
|source 1= IPMA
}}
{{Weather box
|location= Porto São Gens, elevation: {{convert|90|m|abbr=on|disp=or}}, 1971-2000
|single line = Y
|metric first = yes
|collapsed = Y
|Jan record high C = 22.0
|Feb record high C = 23.6
|Mar record high C = 27.6
|Apr record high C = 29.0
|May record high C = 33.6
|Jun record high C = 39.0
|Jul record high C = 38.0
|Aug record high C = 37.6
|Sep record high C = 36.5
|Oct record high C = 32.5
|Nov record high C = 25.0
|Dec record high C = 25.0
|year record high C =
|Jan record low C = -3.0
|Feb record low C = -2.0
|Mar record low C = -2.0
|Apr record low C = 0.0
|May record low C = 0.5
|Jun record low C = 4.0
|Jul record low C = 8.0
|Aug record low C = 7.0
|Sep record low C = 4.0
|Oct record low C = 1.0
|Nov record low C = -2.0
|Dec record low C = -2.5
|year record low C =
|source 1= IPMA
}}
{{Weather box
|location= Francisco Sá Carneiro Airport, elevation: {{convert|70|m|abbr=on|disp=or}}, 1971-2000
|single line = Y
|metric first = yes
|collapsed = Y
|Jan record high C = 23.3
|Feb record high C = 24.4
|Mar record high C = 27.6
|Apr record high C = 28.2
|May record high C = 33.5
|Jun record high C = 38.3
|Jul record high C = 37.7
|Aug record high C = 37.1
|Sep record high C = 36.4
|Oct record high C = 31.7
|Nov record high C = 26.3
|Dec record high C = 24.8
|year record high C =
|Jan record low C = -3.5
|Feb record low C = -3.8
|Mar record low C = -2.6
|Apr record low C = -0.1
|May record low C = 1.5
|Jun record low C = 5.4
|Jul record low C = 8.0
|Aug record low C = 6.1
|Sep record low C = 5.0
|Oct record low C = 1.0
|Nov record low C = -1.1
|Dec record low C = -2.5
|year record low C =
|source 1= IPMA
}}
Precipitation
Porto has abundant levels of precipitation. Despite averaging above {{convert|1000|mm|abbr=on}} of precipitation a year, July and August are relatively dry with around {{convert|15|-|30|mm|abbr=on}} falling each month. The wettest period is between October and February, mostly between October and December, the wettest month.
{{Weather box
|location= Porto (Fontainhas), elevation: {{convert|93|m|abbr=on|disp=or}}, 1981-2010
|single line = Y
|metric first = yes
|precipitation colour = green
|Jan precipitation mm = 147.1
|Feb precipitation mm = 110.5
|Mar precipitation mm = 95.6
|Apr precipitation mm = 117.6
|May precipitation mm = 89.6
|Jun precipitation mm = 39.9
|Jul precipitation mm = 20.4
|Aug precipitation mm = 32.9
|Sep precipitation mm = 71.9
|Oct precipitation mm = 158.3
|Nov precipitation mm = 172.0
|Dec precipitation mm = 181.0
|year precipitation mm = 1237
|source 1= IPMA
}}
{{Weather box
|location= Porto (Fontainhas), elevation: {{convert|93|m|abbr=on|disp=or}}, 1971-2000 normals
|single line = Y
|metric first = yes
|collapsed = Y
|precipitation colour = green
|Jan precipitation mm = 157.6
|Feb precipitation mm = 139.7
|Mar precipitation mm = 89.9
|Apr precipitation mm = 115.6
|May precipitation mm = 97.6
|Jun precipitation mm = 46.0
|Jul precipitation mm = 18.3
|Aug precipitation mm = 26.7
|Sep precipitation mm = 71.0
|Oct precipitation mm = 138.0
|Nov precipitation mm = 158.4
|Dec precipitation mm = 194.7
|year precipitation mm =
|source 1= IPMA
}}
{{Weather box
|location= Porto São Gens, elevation: {{convert|90|m|abbr=on|disp=or}}, 1971-2000
|single line = Y
|metric first = yes
|collapsed = Y
|precipitation colour = green
|Jan precipitation mm = 153.2
|Feb precipitation mm = 136.8
|Mar precipitation mm = 88.0
|Apr precipitation mm = 109.2
|May precipitation mm = 92.7
|Jun precipitation mm = 46.2
|Jul precipitation mm = 18.0
|Aug precipitation mm = 23.9
|Sep precipitation mm = 71.6
|Oct precipitation mm = 138.1
|Nov precipitation mm = 160.1
|Dec precipitation mm = 186.5
|year precipitation mm =
|source 1= IPMA
}}
{{Weather box
|location= Francisco Sá Carneiro Airport, elevation: {{convert|70|m|abbr=on|disp=or}}, 1971-2000
|single line = Y
|metric first = yes
|collapsed = Y
|precipitation colour = green
|Jan precipitation mm = 142.4
|Feb precipitation mm = 126.7
|Mar precipitation mm = 81.5
|Apr precipitation mm = 96.4
|May precipitation mm = 89.4
|Jun precipitation mm = 42.9
|Jul precipitation mm = 16.5
|Aug precipitation mm = 23.3
|Sep precipitation mm = 61.6
|Oct precipitation mm = 132.1
|Nov precipitation mm = 152.9
|Dec precipitation mm = 181.4
|year precipitation mm =
|source 1= IPMA
}}
Humidity
The average relative humidity is around 77%. 81% from November to January and 73% in the summer. Summer can be slightly muggy in the hottest days but is generally comfortable, as temperatures rarely surpass {{convert|30|C}}.{{cite web |title=Average Weather in Porto Portugal |url=https://weatherspark.com/y/32397/Average-Weather-in-Porto-Portugal-Year-Round |publisher=weatherspark.com |access-date=28 January 2021}}
{{Weather box
|location= Porto (Fontainhas), elevation: {{convert|93|m|abbr=on|disp=or}}, 1961-1990
|single line = Y
| Jan humidity =81
| Feb humidity =80
| Mar humidity =75
| Apr humidity =74
| May humidity =74
| Jun humidity =74
| Jul humidity =73
| Aug humidity =73
| Sep humidity =76
| Oct humidity =80
| Nov humidity =81
| Dec humidity =81
|source 1= NOAA
}}
Other phenomena
=Sunshine, UV and daylight=
Despite its precipitation, the total hours of sunshine are relatively normal for a region of its latitude. Winters, especially December, are somewhat dull, and summers are sunny.
{{Weather box
|location= Porto (Fontainhas), elevation: {{convert|93|m|abbr=on|disp=or}}, 1961-1990
|single line = Y
| Jan sun =124.0
| Feb sun =129.0
| Mar sun =192.0
| Apr sun =217.0
| May sun =258.0
| Jun sun =274.0
| Jul sun =308.0
| Aug sun =295.0
| Sep sun =224.0
| Oct sun =184.0
| Nov sun =139.0
| Dec sun =124.0
| Jan light = 9.6
| Feb light = 10.7
| Mar light = 12.0
| Apr light = 13.3
| May light = 14.5
| Jun light = 15.1
| Jul light = 14.8
| Aug light = 13.8
| Sep light = 12.5
| Oct light = 11.1
| Nov light = 9.9
| Dec light = 9.3
| year light=
|Jan percentsun = 40
|Feb percentsun = 42
|Mar percentsun = 52
|Apr percentsun = 55
|May percentsun = 55
|Jun percentsun = 61
|Jul percentsun = 66
|Aug percentsun = 68
|Sep percentsun = 63
|Oct percentsun = 54
|Nov percentsun = 46
|Dec percentsun = 44
|Jan uv = 2
|Feb uv = 3
|Mar uv = 4
|Apr uv = 6
|May uv = 7
|Jun uv = 8
|Jul uv = 8
|Aug uv = 8
|Sep uv = 6
|Oct uv = 4
|Nov uv = 2
|Dec uv = 1
|source 1= NOAA{{cite web |title=Porto (08546) - WMO Weather Station |url=ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_VI/PO/08546.TXT |publisher=National Oceanic and Atmospheric Administration |access-date=28 January 2021}}
|source 2= Weather Atlas{{cite web |url=https://www.weather-atlas.com/en/portugal/porto-climate |title=Porto, Portugal - Monthly weather forecast and climate data |publisher=Weather Atlas |access-date=28 January 2021}}
}}
{{Weather box
|location= Porto (Fontainhas), elevation: {{convert|93|m|abbr=on|disp=or}}, 1987-2007
|single line = Y
|Jan sun = 142.4
|Feb sun = 155.0
|Mar sun = 199.6
|Apr sun = 221.9
|May sun = 276.4
|Jun sun = 277.3
|Jul sun = 302.1
|Aug sun = 284.8
|Sep sun = 230.1
|Oct sun = 162.0
|Nov sun = 139.3
|Dec sun = 118.2
|year sun =
|source 1 = German Meteorological Service{{cite web |url=https://opendata.dwd.de/climate_environment/CDC/observations_global/CLIMAT/monthly/qc/sunshine_duration/historical/08546_198606_200803.txt |title=Monthly Averages for Porto|publisher=DwD}}}}
=Wind=
As a coastal Atlantic city, winds are most predominant in winter. In the summer, nortada winds prevail and can refresh the city in the hottest days. The city centre is sheltered and seldom gets any strong winds.
Sea Temperature
| class="wikitable"
|+Average sea temperature, according to seatemperature.org:{{cite web |title=Porto Sea Temperature |url=https://www.seatemperature.org/europe/portugal/porto.htm |publisher=seatemperature.org |access-date=29 January 2021}} |
| Jan
!Feb !Mar !Apr !May !Jun !Jul !Aug !Sep !Oct !Nov !Dec !Year |
|---|
| style="background: #CCFF99; color: black;"|{{convert|14.3|°C|°F|abbr=on}}
|style="background: #CCFFCC; color: black;"|{{convert|13.8|°C|°F|abbr=on}} |style="background: #CCFFCC; color: black;"|{{convert|13.8|°C|°F|abbr=on}} |style="background: #CCFF99; color: black;"|{{convert|14.9|°C|°F|abbr=on}} |style="background: #FFFF99; color: black;"|{{convert|16.2|°C|°F|abbr=on}} |style="background: #FFFF66; color: black;"|{{convert|17.2|°C|°F|abbr=on}} |style="background: #FFCC66; color: black;"|{{convert|17.3|°C|°F|abbr=on}} |style="background: #FFCC66; color: black;"|{{convert|17.9|°C|°F|abbr=on}} |style="background: #FFCC66; color: black;"|{{convert|18.3|°C|°F|abbr=on}} |style="background: #FFCC66; color: black;"|{{convert|17.8|°C|°F|abbr=on}} |style="background: #FFFF66; color: black;"|{{convert|16.8|°C|°F|abbr=on}} |style="background: #FFFF99; color: black;"|{{convert|15.4|°C|°F|abbr=on}} |style="background: #FFFF99; color: black;"|{{convert|16.1|°C|°F|abbr=on}} |
| class="wikitable"
|+Average sea temperature, according to surf-forecast.com:{{cite web |title=Matosinhos Water Temperature and Wetsuit Guide (Douro and Minho, Portugal) |url=https://www.surf-forecast.com/breaks/Matosinhos/seatemp |publisher=surf-forecast.com |access-date=29 January 2021}} |
| Jan
!Feb !Mar !Apr !May !Jun !Jul !Aug !Sep !Oct !Nov !Dec !Year |
|---|
| style="background: #CCFF99; color: black;"|{{convert|14.5|°C|°F|abbr=on}}
|style="background: #CCFFCC; color: black;"|{{convert|13.5|°C|°F|abbr=on}} |style="background: #CCFFCC; color: black;"|{{convert|14.0|°C|°F|abbr=on}} |style="background: #CCFF99; color: black;"|{{convert|14.5|°C|°F|abbr=on}} |style="background: #FFFF99; color: black;"|{{convert|15.5|°C|°F|abbr=on}} |style="background: #FFFF66; color: black;"|{{convert|17.5|°C|°F|abbr=on}} |style="background: #FFCC66; color: black;"|{{convert|18.5|°C|°F|abbr=on}} |style="background: #FFCC66; color: black;"|{{convert|19.0|°C|°F|abbr=on}} |style="background: #FFCC66; color: black;"|{{convert|18.5|°C|°F|abbr=on}} |style="background: #FFCC66; color: black;"|{{convert|17.5|°C|°F|abbr=on}} |style="background: #FFFF66; color: black;"|{{convert|16.0|°C|°F|abbr=on}} |style="background: #FFFF99; color: black;"|{{convert|15.5|°C|°F|abbr=on}} |style="background: #FFFF99; color: black;"|{{convert|16.2|°C|°F|abbr=on}} |
1961-1990 data
{{Weather box
| location = Porto (Fontainhas), elevation: {{convert|100|m|abbr=on|disp=or}}, 1961-1990 normals and extremes
| single line = yes
| metric first = yes
| collapsed =
| Jan record high C =22.3
| Feb record high C =22.7
| Mar record high C =26.5
| Apr record high C =27.5
| May record high C =34.7
| Jun record high C =38.7
| Jul record high C =38.3
| Aug record high C =38.2
| Sep record high C =36.9
| Oct record high C =32.2
| Nov record high C =27.7
| Dec record high C =24.8
| Jan high C =13.5
| Feb high C =14.3
| Mar high C =16.2
| Apr high C =17.5
| May high C =19.6
| Jun high C =22.7
| Jul high C =24.7
| Aug high C =25.0
| Sep high C =24.0
| Oct high C =20.9
| Nov high C =16.7
| Dec high C =13.9
| Jan mean C =9.3
| Feb mean C =10.1
| Mar mean C =11.5
| Apr mean C =12.9
| May mean C =15.1
| Jun mean C =18.1
| Jul mean C =19.9
| Aug mean C =19.8
| Sep mean C =19.0
| Oct mean C =16.2
| Nov mean C =12.3
| Dec mean C =9.9
| Jan low C =5.1
| Feb low C =5.9
| Mar low C =6.8
| Apr low C =8.3
| May low C =10.6
| Jun low C =13.5
| Jul low C =15.0
| Aug low C =14.6
| Sep low C =13.9
| Oct low C =11.4
| Nov low C =7.9
| Dec low C =5.9
| Jan record low C =-3.3
| Feb record low C =-3.0
| Mar record low C =-1.8
| Apr record low C =0.1
| May record low C =2.6
| Jun record low C =5.6
| Jul record low C =9.0
| Aug record low C =8.0
| Sep record low C =5.5
| Oct record low C =1.4
| Nov record low C =-0.6
| Dec record low C =-2.1
| precipitation colour = green
| Jan precipitation mm =171.0
| Feb precipitation mm =169.0
| Mar precipitation mm =112.0
| Apr precipitation mm =112.0
| May precipitation mm =89.0
| Jun precipitation mm =53.0
| Jul precipitation mm =16.0
| Aug precipitation mm =22.0
| Sep precipitation mm =64.0
| Oct precipitation mm =131.0
| Nov precipitation mm =152.0
| Dec precipitation mm =176.0
| unit precipitation days = 1.0 mm
| Jan precipitation days =14.0
| Feb precipitation days =13.0
| Mar precipitation days =11.0
| Apr precipitation days =10.0
| May precipitation days =9.0
| Jun precipitation days =6.0
| Jul precipitation days =2.0
| Aug precipitation days =3.0
| Sep precipitation days =6.0
| Oct precipitation days =10.0
| Nov precipitation days =12.0
| Dec precipitation days =12.0
| Jan humidity =81.0
| Feb humidity =80.0
| Mar humidity =75.0
| Apr humidity =74.0
| May humidity =74.0
| Jun humidity =74.0
| Jul humidity =73.0
| Aug humidity =73.0
| Sep humidity =76.0
| Oct humidity =80.0
| Nov humidity =81.0
| Dec humidity =81.0
| Jan sun =124.0
| Feb sun =129.0
| Mar sun =192.0
| Apr sun =217.0
| May sun =258.0
| Jun sun =274.0
| Jul sun =308.0
| Aug sun =295.0
| Sep sun =224.0
| Oct sun =184.0
| Nov sun =139.0
| Dec sun =124.0
| source = NOAA{{cite web
| url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_VI/PO/08546.TXT
| title = Porto (08546) - WMO Weather Station
| access-date = April 18, 2019
| publisher = NOAA}}
}}
References
{{Reflist}}
External links
- {{Citation |last1=Monteiro |first1=Ana |title=O clima urbano do Porto: contribuição para a definição das estratégias de planeamento e ordenamento do território |date=1993 |url=https://repositorio-aberto.up.pt/handle/10216/16163}}
{{Porto}}
{{DEFAULTSORT:Porto}}