
Réserve naturelle régionale du marais de Brière
- Annual mean
- 12.4 °C
- Warmest month
- August
- Wettest month
- December
Twelve-month representative atmospheric patterns, spanning temperature, precipitation, and daylight duration.
Monthly climate averages for Réserve naturelle régionale de l'étang du pont de fer, derived from NASA POWER measurements between 1991 and 2020 at a fixed 23.88 meter elevation coordinate. Data includes mean, minimum, and maximum temperatures; daily precipitation rates; relative humidity; wind speeds; and average daylight hours. These values represent long-term regional climatology rather than real-time weather, forecasts, or site-wide terrain conditions.
Long-term monthly averages tracking temperature ranges and daily precipitation rates across twelve months
Long-term monthly normals tracking temperature bounds, precipitation rates, humidity, wind, and daylight
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 6.6 °C-2.6° to 13.1° | 2.5 mm/day | 91.2% | 6 m/s | 8.7 hours |
| February | 6.6 °C-1.8° to 13.4° | 2.2 mm/day | 88.5% | 5.7 m/s | 10 hours |
| March | 8.4 °C-0.1° to 16.4° | 1.7 mm/day | 85.9% | 5.4 m/s | 11.7 hours |
| April | 10.6 °C1.8° to 20.3° | 1.8 mm/day | 82% | 5.1 m/s | 13.4 hours |
| May | 13.9 °C5.1° to 23.9° | 1.8 mm/day | 80% | 4.9 m/s | 14.9 hours |
| June | 17 °C8.6° to 27.7° | 1.5 mm/day | 76.8% | 4.6 m/s | 15.7 hours |
| July | 19.1 °C11.1° to 29.9° | 1.3 mm/day | 73.1% | 4.6 m/s | 15.3 hours |
| August | 19.3 °C11° to 29.9° | 1.4 mm/day | 72.9% | 4.4 m/s | 14 hours |
| September | 16.8 °C8.5° to 26.7° | 1.8 mm/day | 76% | 4.7 m/s | 12.3 hours |
| October | 13.5 °C5° to 21.4° | 2.5 mm/day | 83.8% | 5.3 m/s | 10.5 hours |
| November | 9.9 °C1.6° to 17° | 2.8 mm/day | 88.6% | 5.6 m/s | 9.1 hours |
| December | 7.2 °C-1.7° to 13.8° | 2.9 mm/day | 91.2% | 6 m/s | 8.3 hours |
Comparative analysis of long term averages for temperature, precipitation, humidity, wind, and daylight duration
Interactive climate map
Visit the MoriAtlas climate map to compare long-term monthly temperature and precipitation metrics across national parks. This visual interface helps you understand seasonal variations at specific protected area coordinates to deepen your knowledge of global park geography and environmental characteristics.
Analyze temperature, precipitation, and regional atmospheric patterns across diverse protected landscapes.







Trace the mapped boundaries and geographic context of this French nature reserve. MoriAtlas provides a structured view of how this coastal wetland links with the broader Loire-Atlantique landscape, highlighting the unique physical features that define its ecological value and regional significance.