Cool
Average highs are around 12°C, so pack for cooler days.
December verdict
Bilbao, Spain in December
Weather score13Poor
Poor for holiday weather
Average highs are around 12°C, so pack for cooler days. Sunshine averages 2.3h per day, so this is not one of the brighter months. Rainfall averages 129mm, so some wet days are possible.
December weather
Monthly averages
Temp
12°C
Rain
129mm
Sun
2.3h
Sea
14°C
Weather score
13
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 129mm, so some wet days are possible.
Limited sun
Sunshine averages 2.3h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Weather map
Compare Bilbao, Spain with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December12°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
December129mm average rain
December is wetter than Bilbao's yearly average, so flexible plans matter more.
Driest monthsJune to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December2.3 hours average sun
December is one of Bilbao's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December14°C average sea
December is below Bilbao's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.
Weather score
December13 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.
