Weather in Biarritz for December 2025
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Until now, December 2025 in Biarritz has been nearly identical to the historical average, with a temperature of 13.3 °C (showing only a slight deviation of 0.5 °C).
The forecast for the next days in Biarritz predicts temperatures to be around 12 °C, close to the historical average.
In general, the average temperature in Biarritz at the beginning of December is 12.6 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 12.7 °C by the end of December.
Biarritz experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 162 mm.
Is December a good time to visit Biarritz? check out the best time to travel to Biarritz page.
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Biarritz Weather December
Temperatures trend during December in Biarritz
December weather in Biarritz day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain shower | 14° /8° | 8.5 mm | 4 | |
| 2 Dec. | Light rain shower | 11° /7° | 10.2 mm | 3 | |
| 3 Dec. | Light rain shower | 12° /6° | 9.1 mm | 3 | |
| 4 Dec. | Light rain shower | 12° /7° | 20.9 mm | 3 | |
| 5 Dec. | Light rain shower | 12° /7° | 8.7 mm | 3 | |
| 6 Dec. |  Partly cloudy | 13° /9° | 4.1 mm | 3 | |
| 7 Dec. |  Light rain | 14° /9° | 7.6 mm | 4 | |
| 8 Dec. | Light rain shower | 13° /9° | 14.7 mm | 3 | |
| 9 Dec. | Light drizzle | 14° /8° | 3.8 mm | 3 | |
| 10 Dec. |  Overcast | 12° /8° | 1.2 mm | 3 | |
| 11 Dec. | Partly cloudy | 13° /7° | 0.1 mm | 4 | |
| 12 Dec. | Light rain shower | 13° /8° | 4 mm | 4 | |
| 13 Dec. |  Sunny | 13° /9° | 0 mm | 0.2 | |
| 14 Dec. | Sunny | 15° /8° | 0 mm | 0.2 | |
| 15 Dec. | Patchy rain possible | 15° /9° | 0.7 mm | 0.1 | |
| 16 Dec. |  Moderate rain | 12° /10° | 5.3 mm | 0.2 | |
| 17 Dec. | Patchy rain possible | 13° /9° | 2.3 mm | 0.1 | |
| 18 Dec. | Sunny | 15° /9° | 0 mm | 4 | |
| 19 Dec. | Patchy rain possible | 11° /10° | 4.3 mm | 3 | |
| 20 Dec. | Patchy rain possible | 11° /8° | 0.8 mm | 2 | |
| 21 Dec. | Sunny | 10° /5° | 0 mm | 3 | |
| 22 Dec. | Sunny | 11° /5° | 0 mm | 3 | |
| 23 Dec. | Patchy rain possible | 11° /6° | 0.8 mm | 2 | |
| 24 Dec. | Partly cloudy | 11° /7° | 0 mm | 3 | |
| 25 Dec. | Partly cloudy | 14° /7° | 0 mm | 3 | |
| 26 Dec. | Patchy rain possible | 11° /8° | 2.5 mm | 3 | |
| 27 Dec. | Sunny | 14° /7° | 0 mm | 4 | |
| 28 Dec. | Overcast | 13° /7° | 0 mm | 4 | |
| 29 Dec. | Overcast | 12° /7° | 1.1 mm | 4 | |
| 30 Dec. | Partly cloudy | 13° /6° | 0 mm | 5 | |
| 31 Dec. | Light rain shower | 12° /6° | 7.5 mm | 4 | |
| Next | |||||
Biarritz weather in December vs November vs January
| November | December | January | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 16°/10° | 12°/8° | 11°/6° |
| Rainfall | 183 mm | 162 mm | 141 mm |
| Snowfall | 0 cm | 0 cm | 0 cm |
| Wind | 20.6 km/h | 19 km/h | 18.1 km/h |
| Humidity | 79% | 79% | 78% |
| Rainy days | 21 days | 21 days | 20 days |
| Snow days | 0 days | 0 days | 0 days |
| Dry days | 9 days | 10 days | 11 days |
Planning a trip to Biarritz? Discover the best time to visit
Biarritz in December - FAQ
Biarritz water temperatures in December
The average water temperature of the Atlantic Ocean near Biarritz in December is 13.9 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Biarritz in December?
- The average water temperature in Biarritz in December is 13.9 °C.
- Can you swim in Biarritz in December?
- Cold enough that you lose heat fast. A full 4–5 mm wetsuit (plus hood/gloves for comfort) is advisable for anything beyond a brief plunge.
What to pack to Biarritz in December?
As you prepare for your trip to Biarritz in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Biarritz, during December, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
December rainfall patterns in Biarritz
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