Saint-Nazaire weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: July – August
What is the weather like in Saint-Nazaire in December?
In December, Saint-Nazaire is cold: daytime highs average 10 °C, and nights cool down to about 6 °C. The sea averages 10.8 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 13 rainy days and 83 mm in total. All in all, December is not an ideal month for a holiday in Saint-Nazaire.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 8 | 7 | 9 |
| Day | 13° | 10° | 9° |
| Night | 8° | 6° | 5° |
| Sea | 14° | 11° | 9° |
| Sun | 3 h | 3 h | 3 h |
| Rain days | 12 | 13 | 12 |
More details for December
- Daylight
- 8 h 31 min08:49 – 17:19
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 26 km/haverage daily peakAll months
- Cloud cover
- 70 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+1Europe/Paris
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 20 %37 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Warm jacket
- Rain jacket or umbrella
Saint-Nazaire in December: quick answers
Is Saint-Nazaire hot in December?
No. In December, Saint-Nazaire is cold: daytime highs average 10 °C and nights drop to about 6 °C.
Can you swim in Saint-Nazaire in December?
Only if you don't mind cold water: in December the sea averages just 10.8 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Saint-Nazaire in December?
Rain is frequent, with about 13 rainy days and 83 mm in total.
Saint-Nazaire month by month
The whole year in Saint-NazaireAll destinations: FranceWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences