Is Bilbao hot in August?
Days are typically warm at 26.3°C, while nights average 16.1°C.
Spain · 1991–2020 normal
Typical August weather in Bilbao: 26.3°C by day, 16.1°C at night, 57 mm of rain over 7.9 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, August scores 83 out of 100 (June leads the year at 88). Daylight is calculated as 13 h 57 from latitude 43.26°. Open-water sea temperature is 21.7°C (20 km from the place centre).
August at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically warm at 26.3°C, while nights average 16.1°C.
The measured monthly average is 57 mm across about 8 wet days.
There are about 13 h 57 between sunrise and sunset at mid-month, calculated from the place latitude.
August ranks 4 of 12 in our weather comparison; June ranks first.
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The nearest open-water NOAA OISST 1991–2020 cell averages 21.7°C in August. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
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The weather comparison for Bilbao is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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