Bilbao has a humid oceanic climate, with predominantly West winds, that make temperatures milder and favour temperate weather throughout the year. Given its proximity to the sea, the climate is mild and without extreme temperature changes between the seasons: with an average temperature 8ºC in winter and 20ºC in summer. 

If twenty years ago, Bilbao was synonymous with rain, with persistent periods of the characteristic “sirimiri” (drizzle) lasting days or even weeks, there are now considerably fewer rainy days, with the highest rainfall between October and April.

It is very rare for it to snow in the City, although it does fall on the summits of the surrounding mountains, but only on the coldest days of the year.