Weather in Bilbao

Weather — Bilbao, Spain

Bilbao enjoys a temperate Atlantic climate: mild winters, pleasantly warm summers and fairly consistent rainfall through the year. Average daytime highs run from about 11 °C in January to around 23 °C in August, while nights stay relatively mild (roughly 6–16 °C). Expect frequent cloudy or partly cloudy days and a wet late autumn—perfect context to book flexible flights and plan indoor cultural highlights alongside any sun spells.

Weather in Bilbao — January

January is one of the coolest months: average highs near 11 °C and lows around 6 °C, with about 19 rainy days and roughly 118 mm of precipitation. Short daylight and low sun hours make it a good month for museum visits and hunting off-season flight deals rather than beach plans.

Weather in Bilbao — February

February stays cool with highs around 12 °C and lows near 6 °C; rainfall eases slightly (about 103 mm) but wet days remain frequent. Days lengthen a bit and you may find crisp, clear mornings—handy for exploring the old town before crowds pick up.

Weather in Bilbao — March

Spring begins to show in March: average highs about 14 °C and lows near 7 °C, with moderate rain and increasing sunshine (around 4 daily hours). It’s a pleasant month for city walks and early-season gastronomy outings as temperatures become gentler.

Weather in Bilbao — April

April brings milder weather (highs ~15 °C, lows ~9 °C) and a mix of sun and showers. This shoulder month is attractive for travelers seeking fewer crowds and reasonable flight prices while still enjoying comfortable daytime temperatures.

Weather in Bilbao — May

May feels warmer (around 17 °C day, 11 °C night) with more sunny spells and lower average precipitation. Spring blooms and pleasant afternoons make it ideal for outdoor tapas, riverside walks and snagging good early summer flight deals.

Weather in Bilbao — June

June ushers in true summer warmth: average highs near 20–22 °C and nights around 14 °C, with increased sunshine and sea temperatures climbing to roughly 18 °C. It’s a great time for combining city sightseeing with coastal trips—still before the peak crowds of July and August.

Weather in Bilbao — July

July is one of the warmest and sunniest months (daytime highs ~22–25 °C, lows ~16 °C), ideal for outdoor terraces and beach excursions—sea water averages about 21 °C. Expect fewer rainy days and lively summer events; book flights early if you aim to travel in this peak period.

Weather in Bilbao — August

August remains warm (highs around 23 °C, lows ~16 °C) with plentiful sunshine and sea temperatures near 22 °C—good for swimming and coastal day trips. It’s a busy travel month, so plan ahead for accommodations and flights.

Weather in Bilbao — September

September offers a pleasant late-summer feel: daytime highs around 21–24 °C and comfortable evenings. Rain starts to pick up compared with midsummer, but there are still many clear days—an excellent shoulder month for combining beaches and city experiences.

Weather in Bilbao — October

October cools to averages near 19 °C by day and 13 °C at night, with increased rainfall (roughly 89 mm) and more variable conditions. It’s a good time for cultural trips, with fewer tourists and flexible flight options.

Weather in Bilbao — November

November is the wettest month, averaging about 148 mm of rain and around 20 rainy days; daytime highs drop to about 14 °C with nights near 9 °C. Expect grey skies and cooler breezes—perfect for museum hopping and sampling Basque cuisine indoors.

Weather in Bilbao — December

December brings cool, damp conditions (highs ~12 °C, lows ~7 °C) with moderate rainfall and shorter daylight. Holiday decorations and off-season prices make it attractive for city breaks if you prefer fewer crowds despite the weather.

Table of temperatures throughout the year