Spring (MarchтАУMay): Average 13.3тАУ16.5┬░C, mild and rainy with occasional sunshine. Common activities: Exploring the old town, visiting museums, walking along the Bay of Biscay. Recommended clothing: Light jacket, comfortable trousers or skirt, comfortable shoes.
Summer (JuneтАУAugust): Average 20.0тАУ22.6┬░C, warm and dry with plenty of sunshine and occasional showers. Common activities: Relaxing on the beach, enjoying outdoor activities, tasting local cuisine. Recommended clothing: Light short-sleeved clothing, shorts, sun hat, sunscreen.
Autumn (SeptemberтАУNovember): Average 14.3тАУ20.2┬░C, pleasant and comfortable but with more rainfall. Common activities: Visiting the Guggenheim Museum Bilbao, strolling through city parks, tasting local wines. Recommended clothing: Light jacket, long-sleeved shirts, comfortable shoes.
Winter (DecemberтАУFebruary): Average 9.7тАУ11.5┬░C, cold and humid with frequent rain and occasional overcast skies. Common activities: Visiting indoor attractions, enjoying caf├й culture, shopping for local products in indoor markets. Recommended clothing: Warm jacket, scarf, gloves, hat.
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Annual average temperature: approx. 16┬░C / Annual rainfall: approx. 1135 mm / Summer humidity: 60%тАУ70% / Rainiest month: January