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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Culture Observer weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Bilbao’s oceanic climate brings mild winters and warm, pleasant summers. The best months for travel are May through September, when rainfall dips and temperatures sit in the low 20s °C — ideal for exploring the city and coast.
When is the best time to visit Bilbao?
Late spring to early autumn offers the most reliable weather. July and August are the warmest, with highs around 25 °C, but they also coincide with school holidays and higher prices. May, June and September are crowd-free, with comfortable temperatures and lower accommodation costs. For detailed planning, see our 10-day weather forecast for the UK — it can help gauge the pattern before you fly.
If you’re checking the bilbao weather by month, note that the wettest period runs from October to January. February and March are still damp but begin to brighten. The live forecast above gives a bilbao weather forecast 15 days out, so you can time your trip accordingly.
What should I pack for Bilbao?
A layering system works best. A light waterproof jacket is essential even in summer — sudden showers are common. In winter (December–February), pack a warm coat, scarf and umbrella; temperatures hover around 8–13 °C. Comfortable walking shoes are a must for the hilly streets. The city’s restaurant and bar scene means smart-casual wear works for evenings.
Does it rain a lot in Bilbao?
Yes, rainfall is distributed throughout the year, with an annual average of around 1,200 mm. The driest months are July and August, but even then the occasional shower is possible. Wet days are more frequent from October to February.
Is Bilbao warm in December?
December is cool and damp. Daytime highs average 12 °C, dropping to 7 °C at night. You’ll need warm clothing and waterproofs. The city’s indoor attractions, such as the Guggenheim Museum, make it a feasible winter destination.
What is the sea temperature near Bilbao?
The Bay of Biscay waters around Bilbao are cool year-round. In August they peak at around 21 °C, while in winter they drop to 12 °C. Swimming is possible in high summer, but a wetsuit is recommended for spring and autumn.
For a broader picture, see the UK weather hub for climate comparisons. Many travellers also search for bilbao weather bbc or bilbao weather 30 days — the live forecast above covers the next few weeks, and for longer planning the facts block gives you the bilbao weather year round averages. If you’re interested in weather in bilbao 10 days, the data you need is right there.