Spain · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Bilbao are June, July and September, when daytime temperatures are agreeable and rainfall is relatively low.
Bilbao sees its warmest weather in August, when daytime highs average around 26°C, and its coolest in January (around 14°C).
Annual precipitation totals roughly 1155mm — November is typically the wettest month (~171mm) and July the driest (~52mm).
A distinctly wetter period runs from October to January — worth planning around if you prefer dry days.
July is the sunniest month, with about 177 hours of sunshine.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 60 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 14° / 5°C | 131mm | 🤔 Fair |
| February | 14° / 5°C | 109mm | 🤔 Fair |
| March | 17° / 7°C | 98mm | 👍 Good |
| April | 18° / 8°C | 97mm | 👍 Good |
| May | 21° / 11°C | 76mm | 🌟 Great |
| June | 24° / 14°C | 58mm | 🌟 Great |
| July | 26° / 16°C | 52mm | 🌟 Great |
| August | 26° / 16°C | 53mm | 🌟 Great |
| September | 25° / 14°C | 75mm | 🌟 Great |
| October | 22° / 12°C | 112mm | 🌟 Great |
| November | 17° / 8°C | 171mm | 🤔 Fair |
| December | 14° / 6°C | 125mm | 🤔 Fair |
January in Bilbao is chilly, with average daytime highs around 14°C (56°F) and nighttime lows near 5°C (42°F). Expect roughly 131mm of precipitation spread over about 13 rainy days, and this is one of the wetter months.
☀️ About 75 hours of sunshine over the month (~3h/day).
🎒 What to pack — jacket or coat · long-sleeve layers · compact umbrella or rain jacket
February in Bilbao is mild, with average daytime highs around 14°C (57°F) and nighttime lows near 5°C (41°F). Expect roughly 109mm of precipitation spread over about 11 rainy days, with a moderate amount of rain.
☀️ About 89 hours of sunshine over the month (~3h/day).
🎒 What to pack — light jacket · layers for cool evenings
March in Bilbao is mild, with average daytime highs around 17°C (62°F) and nighttime lows near 7°C (44°F). Expect roughly 98mm of precipitation spread over about 11 rainy days, with a moderate amount of rain.
☀️ About 127 hours of sunshine over the month (~4h/day).
🎒 What to pack — light jacket · layers for cool evenings
April in Bilbao is mild, with average daytime highs around 18°C (64°F) and nighttime lows near 8°C (47°F). Expect roughly 97mm of precipitation spread over about 12 rainy days, with a moderate amount of rain.
☀️ About 138 hours of sunshine over the month (~5h/day).
🎒 What to pack — light jacket · layers for cool evenings
May in Bilbao is pleasantly warm, with average daytime highs around 21°C (70°F) and nighttime lows near 11°C (52°F). Expect roughly 76mm of precipitation spread over about 10 rainy days, with a moderate amount of rain.
☀️ About 167 hours of sunshine over the month (~6h/day).
🎒 What to pack — light layers · comfortable walking shoes
June in Bilbao is pleasantly warm, with average daytime highs around 24°C (74°F) and nighttime lows near 14°C (57°F). Expect roughly 58mm of precipitation spread over about 7 rainy days, with little rainfall.
☀️ About 168 hours of sunshine over the month (~6h/day).
🎒 What to pack — light layers · comfortable walking shoes
July in Bilbao is warm, with average daytime highs around 26°C (78°F) and nighttime lows near 16°C (61°F). Expect roughly 52mm of precipitation spread over about 7 rainy days, with little rainfall.
☀️ About 177 hours of sunshine over the month (~6h/day).
🎒 What to pack — light summer clothing · sunscreen and sunglasses
August in Bilbao is warm, with average daytime highs around 26°C (80°F) and nighttime lows near 16°C (61°F). Expect roughly 53mm of precipitation spread over about 7 rainy days, with little rainfall.
☀️ About 174 hours of sunshine over the month (~6h/day).
🎒 What to pack — light summer clothing · sunscreen and sunglasses
September in Bilbao is pleasantly warm, with average daytime highs around 25°C (76°F) and nighttime lows near 14°C (57°F). Expect roughly 75mm of precipitation spread over about 9 rainy days, with a moderate amount of rain.
☀️ About 156 hours of sunshine over the month (~5h/day).
🎒 What to pack — light layers · comfortable walking shoes
October in Bilbao is pleasantly warm, with average daytime highs around 22°C (71°F) and nighttime lows near 12°C (53°F). Expect roughly 112mm of precipitation spread over about 11 rainy days, and this is one of the wetter months.
☀️ About 121 hours of sunshine over the month (~4h/day).
🎒 What to pack — light layers · comfortable walking shoes · compact umbrella or rain jacket
November in Bilbao is mild, with average daytime highs around 17°C (62°F) and nighttime lows near 8°C (47°F). Expect roughly 171mm of precipitation spread over about 14 rainy days, and this is one of the wetter months.
☀️ About 78 hours of sunshine over the month (~3h/day).
🎒 What to pack — light jacket · layers for cool evenings · compact umbrella or rain jacket
December in Bilbao is mild, with average daytime highs around 14°C (57°F) and nighttime lows near 6°C (43°F). Expect roughly 125mm of precipitation spread over about 12 rainy days, and this is one of the wetter months.
☀️ About 74 hours of sunshine over the month (~2h/day).
🎒 What to pack — light jacket · layers for cool evenings · compact umbrella or rain jacket