Bilbao, Spain Climate & Monthly Averages
Bilbao has an oceanic climate. August is the hottest month, averaging 78° by day; January is the coldest at 54°.
How weather changes through the year in Bilbao
Bilbao runs on a dry-summer rhythm: the warmest months are also the driest. July averages 1.7 inches (44 mm) while the wet season peaks in November at 6.2 inches (159 mm). Highs range from 54°F (12°C) to 78°F (26°C).
Bilbao climate quick facts
- Hottest month: August - highs near 78°F (26°C)
- Coldest month: January - highs near 54°F (12°C)
- Decade extremes (2015-2024): 109°F (43°C) high · 26°F (-4°C) low
- Wettest month: November (16 rainy days) · Sunniest: July (10.8 h sun/day)
- Climate type: oceanic
- Annual swing: 12°C between the average warmest and coolest month · day to night: 8°C
- Snow: about 2 days a year
- Average humidity: 79%
Temperatures, rain and sunshine
Relative humidity averages 79% across the year, more humid than roughly 80% of the cities we track. August is the warm end of the year, averaging 78°F (26°C) by day and 63°F (17°C) overnight. January sits at the other end of the year: 54°F (12°C) by day, 42°F (6°C) at night. Sunshine averages 8.3 hours a day over the year - duller than about 75% of the cities we track, peaking in July at 10.8 hours.
Snowfall is rare but not unheard of. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 109°F (43°C) and the lowest daily minimum 26°F (-4°C).
Where Bilbao sits among other climates
- Bilbao sits close to the middle of our dataset on most measures: 59°F (15°C) as an annual average, 45.9 inches (1166 mm) of precipitation and 8.3 hours of sun a day.
These comparisons use the same ten-year window for every city in the dataset.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 54° | 42° | 15 | 5.5 in | 5.4 h/day | 9.3 h | 49% | 80% |
| February | 57° | 44° | 14 | 5.1 in | 6.3 h/day | 10.4 h | 51% | 79% |
| March | 60° | 46° | 17 | 4.2 in | 8.0 h/day | 11.8 h | 54% | 76% |
| April | 63° | 48° | 14 | 3.3 in | 9.1 h/day | 13.4 h | 46% | 76% |
| May | 68° | 53° | 14 | 3.1 in | 10.1 h/day | 14.7 h | 46% | 79% |
| June | 73° | 59° | 12 | 2.9 in | 10.2 h/day | 15.4 h | 42% | 81% |
| July | 77° | 62° | 10 | 1.7 in | 10.8 h/day | 15.1 h | 31% | 79% |
| August | 78° | 63° | 10 | 2.1 in | 10.5 h/day | 13.9 h | 31% | 78% |
| September | 75° | 59° | 12 | 3.1 in | 9.7 h/day | 12.4 h | 40% | 79% |
| October | 70° | 55° | 13 | 4.0 in | 7.4 h/day | 10.9 h | 42% | 77% |
| November | 61° | 49° | 16 | 6.2 in | 6.1 h/day | 9.6 h | 54% | 80% |
| December | 58° | 46° | 14 | 4.7 in | 5.5 h/day | 9.0 h | 46% | 80% |
Bilbao month by month
Each card shows the average high and low. The bar places that month between Bilbao's coldest night and warmest afternoon.
January
- Rain
- 15 days
- Sunshine
- 5.4 h
- Daylight
- 9.3 h
February
- Rain
- 14 days
- Sunshine
- 6.3 h
- Daylight
- 10.4 h
March
- Rain
- 17 days
- Sunshine
- 8.0 h
- Daylight
- 11.8 h
April
- Rain
- 14 days
- Sunshine
- 9.1 h
- Daylight
- 13.4 h
May
- Rain
- 14 days
- Sunshine
- 10.1 h
- Daylight
- 14.7 h
June
- Rain
- 12 days
- Sunshine
- 10.2 h
- Daylight
- 15.4 h
July
- Rain
- 10 days
- Sunshine
- 10.8 h
- Daylight
- 15.1 h
August
- Rain
- 10 days
- Sunshine
- 10.5 h
- Daylight
- 13.9 h
September
- Rain
- 12 days
- Sunshine
- 9.7 h
- Daylight
- 12.4 h
October
- Rain
- 13 days
- Sunshine
- 7.4 h
- Daylight
- 10.9 h
November
- Rain
- 16 days
- Sunshine
- 6.1 h
- Daylight
- 9.6 h
December
- Rain
- 14 days
- Sunshine
- 5.5 h
- Daylight
- 9.0 h
Looking for warmer alternatives? Browse warm places by month, or compare Bilbao's coolest part of the year: January, February, December.
A season-by-season guide to Bilbao
Spring (March through May)
Spring in Bilbao is crisp but comfortable, with daytime highs averaging 64°F (18°C) and nights around 49°F (9°C); rain falls on around 45 of the 90 days.
Summer (June through August)
Summer settles into easy warmth here - highs near 76°F (24°C), nights near 61°F (16°C), and rain falls on around 32 of the 90 days. Daylight is generous - around 10.5 hours of sun a day.
Fall (September through November)
Fall in Bilbao settles into easy warmth, with daytime highs averaging 69°F (20°C) and nights around 55°F (13°C); rain falls on around 41 of the 90 days.
Winter (December through February)
Through winter, Bilbao is crisp but comfortable: 56°F (14°C) by day, 44°F (7°C) after dark, and rain falls on around 44 of the 90 days.
Questions people ask about Bilbao's climate
What is the average temperature in Bilbao?
What should I wear in Bilbao?
How hot does Bilbao get in summer?
How much sun does Bilbao get?
How humid does Bilbao get?
How cold does Bilbao get in winter?
The most useful weather window for Bilbao
Best time to visit Bilbao
Aim for April to September if you get the choice: the dry season is running but the afternoons are still bearable, and highs average 72°F (22°C) against roughly 12 wet days a month. For the same question asked the other way round, see where else is warm in April.
What to pack
Pack for Bilbao with a warm jacket and layers for the cooler season and proper waterproofs rather than an umbrella - wet days are the norm here. Note the gap between afternoon and night: August pairs 78°F (26°C) with 63°F (17°C).
Bilbao temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.