Cool
Average highs are around 12°C, so pack for cooler days.
December verdict
Poor for holiday weather
Average highs are around 12°C, so pack for cooler days. Sunshine averages 2.9h per day, so this is not one of the brighter months. Rainfall averages 142mm, so some wet days are possible.
Monthly averages
Temp
12°C
Rain
142mm
Sun
2.9h
Sea
14°C
Weather score
14
Poor
Cool
Average highs are around 12°C, so pack for cooler days.
Showers
Rainfall averages 142mm, so some wet days are possible.
Limited sun
Sunshine averages 2.9h 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
Compare Biarritz, France with nearby places by weather score, rain, sun, temperature, and swim conditions.
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.
December142mm average rain
December is wetter than Biarritz's yearly average, so flexible plans matter more.
Driest monthsJune to July
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December2.9 hours average sun
December is one of Biarritz's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
December14°C average sea
December is below Biarritz'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.
December14 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 monthsJune to September
These months have the strongest weather score in the monthly averages.