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Best time to visit · Spain
For the most comfortable weather in Bilbao, aim for May and July – September. August tops our comfort score at 87/100, with highs around 75°F (24°C) and 1.4 in (36 mm) of rain. April, June and October are good shoulder-season months. The toughest months are December – February, mainly because of cloud cover.
Highs run from 54°F to 75°F across the year, and the yearly total is about 39.5 in (1003 mm) of rain.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 54°F12°C | 54°F12°C | 57°F14°C | 60°F15°C | 64°F18°C | 70°F21°C | 73°F23°C | 75°F24°C | 72°F22°C | 68°F20°C | 60°F16°C | 56°F13°C |
| Avg low | 48°F9°C | 47°F8°C | 49°F10°C | 52°F11°C | 56°F14°C | 62°F17°C | 66°F19°C | 67°F19°C | 64°F18°C | 60°F15°C | 53°F12°C | 49°F10°C |
| Rain | 5.0 in126 mm | 3.9 in98 mm | 3.7 in94 mm | 3.1 in80 mm | 2.5 in64 mm | 2.2 in56 mm | 1.4 in35 mm | 1.4 in36 mm | 2.1 in53 mm | 3.7 in95 mm | 5.7 in146 mm | 4.7 in120 mm |
| Humidity | 80% | 78% | 78% | 79% | 79% | 78% | 76% | 73% | 72% | 73% | 77% | 79% |
| Cloud | 81% | 77% | 74% | 72% | 72% | 67% | 63% | 63% | 62% | 71% | 78% | 79% |
| Comfort | 56 | 60 | 67 | 73 | 82 | 80 | 85 | 87 | 86 | 80 | 64 | 60 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. The grid cell sits at about 106 m (348 ft), close to Bilbao's own ~23 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 54–56°F (12–13°C) and lows down to 47°F (8°C). It's the wettest season, with about 13.5 in (344 mm) of rain, 34% of the year's total. It holds the toughest stretch on our comfort score (December – February), averaging 59/100.
Temperatures climb through the season, from 57°F highs in March to 64°F by May. About 9.4 in (238 mm) of rain falls across these months, 24% of the year's total. Lows bottom out around 49°F (10°C). May is among the best-scoring months (season average 74/100).
Peak warmth: highs of 70–75°F (21–24°C). It's the driest season, with only about 5.0 in (127 mm) of rain, 13% of the year's total. July feels humid, with humidity near 76%. Comfort peaks here: July & August rank with the year's best, and the season averages 84/100.
Temperatures slide from 72°F highs in September to 60°F by November. About 11.6 in (294 mm) of rain falls across these months, 29% of the year's total. Lows bottom out around 53°F (12°C). September is among the best-scoring months (season average 77/100).
By comfort score: 6 Great, 5 Good and 1 Fair. Great months: May – October. Tap a month for its own guide.
For the most comfortable weather in Bilbao, aim for May and July – September. August tops our comfort score at 87/100, with highs around 75°F (24°C) and 1.4 in (36 mm) of rain. April, June and October are good shoulder-season months. The toughest months are December – February, mainly because of cloud cover.
November is the wettest month, averaging about 5.7 in (146 mm) of rain. July is the driest, with about 1.4 in (35 mm). The yearly total is around 39.5 in (1003 mm).
February is the coldest, with average lows of 47°F (8°C) and highs of 54°F (12°C). The warmest is August, with average highs of 75°F (24°C).
Yes: in July humidity averages 76% with warm temperatures, so it feels muggy. Summer highs peak around 75°F (24°C).
The wettest three-month stretch is November – January, with about 15.4 in (392 mm) of rain combined. The driest stretch is July – September, with about 4.9 in (124 mm).
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