Find your Bilbao season
Mild means an average daily high of 18–25°C (64–77°F), ranked by closeness to 21°C, then fewer wet days. This compares weather only, without assuming prices or crowd levels.
Bilbao
June
21° / 16°C
9.1 wet days · 56 mm
September
22° / 18°C
8.8 wet days · 53 mm
October
20° / 15°C
12.3 wet days · 95 mm
July
23° / 18°C
8.4 wet days · 35 mm
August
24° / 19°C
8 wet days · 36 mm
A consistent comparison.
All cities here use NASA POWER daily data for 2001–2020. Nearby cities may share a regional grid cell; small numerical differences are not a reason to choose one over another. Lisbon’s dedicated planner uses a separate IPMA station series, so its numbers can differ.
Data sources & methods