Biarritz weather in December
December in Biarritz: cool, soaked, with clean air — not the time — 15 rainy days.
#11 of 12 months in Biarritz · #793 of 897 destinations to visit in December · comfort 46/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Biarritz in December
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Biarritz climate normals — December
| Daytime high | 13°C / 56°F | 🙂 cool |
|---|---|---|
| Nighttime low | 8°C / 47°F | |
| Rainfall | 206 mm / 8.1 in | ⛈ soaked |
| Rainy days | 15 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 7°C / 45°F | |
| Sunshine | 5.6 h/day | |
| Daylight | 9 h | |
| Wind | 24 km/h / 15 mph | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Biarritz in December — FAQ
- Is December a good time to visit Biarritz?
- December in Biarritz: cool, soaked, with clean air — not the time — 15 rainy days. It ranks #11 of 12 months for Biarritz on SeasonMap's comfort score (46/100).
- What is the weather like in Biarritz in December?
- In December, Biarritz averages a daily high of 13.2°C and a low of 8.1°C, with about 205.6 mm of rain over roughly 15.4 rainy days.
- What is the air quality in Biarritz in December?
- Biarritz has a mean US Air Quality Index of about 40 in December.