
Réserve naturelle régionale des landes et marais de Glomel
- Annual mean
- 11.3 °C
- Warmest month
- August
- Wettest month
- December
Twelve month atmospheric measurements based on historical climatology from 1991 to 2020
Analyze the representative long-term atmospheric patterns at Réserve naturelle nationale de la baie de Saint-Brieuc through consistent monthly climate data. Values provided include average minimum, mean, and maximum temperatures; daily precipitation rates; relative humidity; wind speed; and average daylight duration for each month of the calendar year. These metrics originate from NASA POWER measurements sampled at a fixed coordinate elevation of 88.89 meters to offer a standardized view of local climate trends.

Long-term monthly averages tracking thermal ranges alongside daily precipitation rates across twelve months
Compare twelve months of average temperature bounds, precipitation rates, wind speed, and daylight hours.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 6.1 °C-2° to 13.1° | 2.4 mm/day | 90% | 6.3 m/s | 8.6 hours |
| February | 6.1 °C-1.3° to 13.4° | 2.3 mm/day | 87.3% | 6.1 m/s | 9.9 hours |
| March | 7.8 °C0.3° to 16.3° | 1.7 mm/day | 85% | 5.7 m/s | 11.6 hours |
| April | 9.7 °C2.1° to 19.5° | 1.9 mm/day | 82% | 5.2 m/s | 13.5 hours |
| May | 12.7 °C5.1° to 22.5° | 1.8 mm/day | 81.3% | 4.9 m/s | 15 hours |
| June | 15.5 °C8.2° to 25.6° | 1.7 mm/day | 80.6% | 4.6 m/s | 15.8 hours |
| July | 17.4 °C10.6° to 27.1° | 1.5 mm/day | 79.9% | 4.5 m/s | 15.5 hours |
| August | 17.6 °C10.9° to 27.3° | 1.6 mm/day | 79.7% | 4.4 m/s | 14.1 hours |
| September | 15.7 °C8.8° to 24.5° | 1.8 mm/day | 80.5% | 4.8 m/s | 12.3 hours |
| October | 12.7 °C5.5° to 20.6° | 2.6 mm/day | 85% | 5.6 m/s | 10.5 hours |
| November | 9.3 °C2.1° to 16.6° | 2.9 mm/day | 88.4% | 5.9 m/s | 8.9 hours |
| December | 6.8 °C-1.1° to 13.6° | 2.9 mm/day | 90.1% | 6.3 m/s | 8.2 hours |
Comparative analysis of long-term monthly averages across temperature, precipitation, 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.
Explore monthly temperature, precipitation, wind, and daylight records across diverse regional settings.






Examine the detailed geographic boundaries and environmental features of this major French coastal reserve. MoriAtlas provides a comprehensive look at the tidal systems, salt marshes, and geological diversity found within the Bay of Saint-Brieuc, offering deep insight into this protected Brittany landmark.