Editing Bilbao (section)

=== Climate ===

{{Main|Climate of Bilbao}}
[[File:Deustuko San Pedro-Erribera, Bilbo, Bizkaia, Spain - panoramio (2).jpg|thumb|250px|left|Palm trees during a sunny day in Bilbao]]
Its proximity to the [[Bay of Biscay]] gives Bilbao an [[oceanic climate]] (''Cfb''), with precipitation occurring throughout the year and without a well-defined dry summer. Precipitation is abundant, and given the latitude and atmospheric dynamics, rainy days represent 45% and cloudy days 40% of the annual total.<ref>[[#gom79|Gómez Piñeiro 1979]]: 65</ref> The rainiest season is between October and April, November being the wettest. Snow is not frequent in Bilbao, although it is possible to see snow on the top of the surrounding mountains. [[Rain and snow mixed|Sleet]] is more frequent, about 10 days per year, mainly in the winter months.<ref>[[#gom79|Gómez Piñeiro 1979]]: 70</ref> Bilbao is nearest to the subtropical boundary of all the Atlantic coastal cities in the country with an August daily mean of {{convert|20.9|C|F}}.<ref name="Standard climate values for Bilbao">{{cite web|url=http://www.aemet.es/en/serviciosclimaticos/datosclimatologicos/valoresclimatologicos?l=1082&k=pva|title=Standard climate values for Bilbao|publisher=Aemet.es|access-date=23 July 2015|archive-date=23 July 2015|archive-url=https://web.archive.org/web/20150723075414/http://www.aemet.es/en/serviciosclimaticos/datosclimatologicos/valoresclimatologicos?l=1082&k=pva|url-status=live}}</ref> There is also a drying trend in summer with only around {{convert|50|mm|in}} of rainfall in July<ref name="Standard climate values for Bilbao"/> – but not dry enough to be considered Mediterranean.

The proximity of the ocean also means that the two best defined seasons (summer and winter) remain mild, with low intensity thermal oscillations. Average maximum temperatures vary between {{convert|25|and|26|°C|1|abbr=on}} in the summer months, while the average minimum in winter is between {{convert|6|and|7|°C|1|abbr=on}}.

Extreme record observations in Bilbao are {{convert|42.9|°C|1|abbr=on}} maximum (on 11 August 2024) and  {{convert|-8.6|°C|1|abbr=on}} minimum (on 3 February 1963). The maximum precipitation in a day was {{convert|225.6|mm|0|abbr=on}} on 26 August 1983 when [[1983 Spanish floods|severe flooding]] was caused by the Nervión river.<ref>{{cite web | url = http://www2.bilbao.net/bilbaoturismo/castellano/cbureau/clima.htm | title = City Council climate information | publisher = Bilbao City Council | access-date = 7 October 2010 | archive-date = 17 December 2010 | archive-url = https://web.archive.org/web/20101217165523/http://www2.bilbao.net/bilbaoturismo/castellano/cbureau/clima.htm | url-status = live }}</ref>

{{Weather box
| location = Bilbao airport (1991–2020 normals, extremes 1947-present)
| metric first = yes
| single line = yes
| Jan record high C = 24.9
| Feb record high C = 26.8
| Mar record high C = 29.8
| Apr record high C = 33.1
| May record high C = 36.0
| Jun record high C = 41.2
| Jul record high C = 42.0
| Aug record high C = 42.9
| Sep record high C = 41.7
| Oct record high C = 33.4
| Nov record high C = 27.6
| Dec record high C = 24.7
| year record high C = 42.9
| Jan high C = 13.5
| Feb high C = 14.2
| Mar high C = 16.6
| Apr high C = 18.1
| May high C = 21.0
| Jun high C = 23.5
| Jul high C = 25.4
| Aug high C = 26.3
| Sep high C = 24.5
| Oct high C = 21.5
| Nov high C = 16.6
| Dec high C = 14.1
| year high C = 
| Jan mean C = 9.5
| Feb mean C = 9.7
| Mar mean C = 11.6
| Apr mean C = 13.1
| May mean C = 16.0
| Jun mean C = 18.7
| Jul mean C = 20.6
| Aug mean C = 21.2
| Sep mean C = 19.2
| Oct mean C = 16.6
| Nov mean C = 12.5
| Dec mean C = 10.1
| year mean C = 
| Jan low C = 5.3
| Feb low C = 5.1
| Mar low C = 6.7
| Apr low C = 8.1
| May low C = 11.0
| Jun low C = 13.8
| Jul low C = 15.8
| Aug low C = 16.1
| Sep low C = 13.9
| Oct low C = 11.6
| Nov low C = 8.3
| Dec low C = 6.1
| year low C = 
| Jan record low C = -7.6
| Feb record low C = -8.6
| Mar record low C = -5.0
| Apr record low C = -1.2
| May record low C = 0.4
| Jun record low C = 3.6
| Jul record low C = 6.6
| Aug record low C = 6.8
| Sep record low C = 3.8
| Oct record low C = 0.6
| Nov record low C = -6.2
| Dec record low C = -7.4
| year record low C = -8.6
| precipitation colour = green
| Jan precipitation mm = 130
| Feb precipitation mm = 109
| Mar precipitation mm = 98
| Apr precipitation mm = 97
| May precipitation mm = 76
| Jun precipitation mm = 58
| Jul precipitation mm = 52
| Aug precipitation mm = 53
| Sep precipitation mm = 75
| Oct precipitation mm = 112
| Nov precipitation mm = 171
| Dec precipitation mm = 127
| year precipitation mm = 
| Jan precipitation days = 12.8
| Feb precipitation days = 11.1
| Mar precipitation days = 10.5
| Apr precipitation days = 12.0
| May precipitation days = 10.3
| Jun precipitation days = 7.2
| Jul precipitation days = 7.4
| Aug precipitation days = 7.4
| Sep precipitation days = 8.9
| Oct precipitation days = 10.7
| Nov precipitation days = 13.7
| Dec precipitation days = 12.4
| year precipitation days = 
| Jan snow days = 0.3
| Feb snow days = 0.7
| Mar snow days = 0.3
| Apr snow days = 0
| May snow days = 0
| Jun snow days = 0
| Jul snow days = 0
| Aug snow days = 0
| Sep snow days = 0
| Oct snow days = 0
| Nov snow days = 0.1
| Dec snow days = 0.3
| year snow days = 
| Jan humidity = 73
| Feb humidity = 70
| Mar humidity = 68
| Apr humidity = 69
| May humidity = 69
| Jun humidity = 71
| Jul humidity = 72
| Aug humidity = 71
| Sep humidity = 72
| Oct humidity = 71
| Nov humidity = 74
| Dec humidity = 73
| year humidity = 
| Jan sun = 81
| Feb sun = 96
| Mar sun = 136
| Apr sun = 144
| May sun = 177
| Jun sun = 180
| Jul sun = 186
| Aug sun = 183
| Sep sun = 162
| Oct sun = 130
| Nov sun = 84
| Dec sun = 81
| year sun = 
| Jan percentsun = 28
| Feb percentsun = 32
| Mar percentsun = 36
| Apr percentsun = 36
| May percentsun = 38
| Jun percentsun = 39
| Jul percentsun = 40
| Aug percentsun = 43
| Sep percentsun = 43
| Oct percentsun = 38
| Nov percentsun = 29
| Dec percentsun = 28
| year percentsun = 
| source 1 = [[Agencia Estatal de Meteorología]]<ref>{{cite web |url=http://www.aemet.es/es/serviciosclimaticos/datosclimatologicos/valoresclimatologicos?l=1082&k=48 |title=Valores climatológicos normales. Bilbao Aeropuerto |work=[[Agencia Estatal de Meteorología]] |access-date=7 June 2020 |language=es |archive-date=7 June 2020 |archive-url=https://web.archive.org/web/20200607145803/http://www.aemet.es/es/serviciosclimaticos/datosclimatologicos/valoresclimatologicos?l=1082&k=48 |url-status=live }}</ref>
| date = January 2015
| source 2 = [[Agencia Estatal de Meteorología]]<ref>{{cite web |url=http://www.aemet.es/es/serviciosclimaticos/datosclimatologicos/efemerides_extremos?w=0&k=pva&l=1082&datos=det |title=Valores extremos. Bilbao Aeropuerto |work=[[Agencia Estatal de Meteorología]] |access-date=7 June 2020 |language=es |archive-date=7 June 2020 |archive-url=https://web.archive.org/web/20200607145804/http://www.aemet.es/es/serviciosclimaticos/datosclimatologicos/efemerides_extremos?w=0&k=pva&l=1082&datos=det |url-status=live }}</ref><ref>{{cite web|url= https://ogimet.com/cgi-bin/gsynres?ind=08025&ano=2021&mes=12&day=30&hora=18&min=0&ndays=30|title= 08025: Bilbao / Sondica (Spain)|author= <!--Not stated-->|date= 29 December 2021|website= ogimet.com|publisher= OGIMET|access-date= 30 December 2021|quote= |archive-date= 30 December 2021|archive-url= https://web.archive.org/web/20211230214905/https://ogimet.com/cgi-bin/gsynres?ind=08025&ano=2021&mes=12&day=30&hora=18&min=0&ndays=30|url-status= live}}</ref>
| source = 
}}