
Mounts Bay Marine Conservation Zone
- Annual mean
- 12.3 °C
- Warmest month
- August
- Wettest month
- November
Twelve-month comparative analysis of temperature, precipitation, humidity, wind, and daily daylight
The annual climate profile for Gwennap Head provides a structured overview of long-term atmospheric patterns. Compiled using NASA POWER measurements at a representative coordinate, these monthly normals detail average minimum and maximum temperatures, daily precipitation rates, relative humidity, wind speed, and daylight hours for the 1991 to 2020 period. These values characterize localized climate rhythms while excluding current weather fluctuations or site-wide terrain variations.

Tracking long-term thermal ranges and average daily precipitation across all twelve months
Comparing average temperature bounds, precipitation rates, humidity, wind speed, and daylight hours for Cornwall
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 9.3 °C5.2° to 12.3° | 3.5 mm/day | 82.7% | 9.4 m/s | 8.4 hours |
| February | 8.8 °C4.7° to 11.5° | 3 mm/day | 82.7% | 8.9 m/s | 9.8 hours |
| March | 9 °C5.5° to 11.5° | 2.4 mm/day | 84.6% | 8 m/s | 11.6 hours |
| April | 10 °C6.6° to 12.7° | 2.3 mm/day | 84.5% | 7.1 m/s | 13.5 hours |
| May | 11.9 °C8.9° to 15.2° | 2 mm/day | 85.9% | 6.6 m/s | 15.2 hours |
| June | 14.3 °C11.5° to 17.3° | 2 mm/day | 86.8% | 6.2 m/s | 16.1 hours |
| July | 16.3 °C13.8° to 19° | 2.2 mm/day | 87% | 6.1 m/s | 15.7 hours |
| August | 16.7 °C14.4° to 18.9° | 2.4 mm/day | 85.8% | 6.3 m/s | 14.2 hours |
| September | 15.6 °C13° to 18° | 2.3 mm/day | 85.2% | 6.8 m/s | 12.3 hours |
| October | 13.7 °C10.7° to 16.1° | 3.3 mm/day | 84.1% | 8 m/s | 10.4 hours |
| November | 11.7 °C8.1° to 14.5° | 3.9 mm/day | 82.8% | 8.8 m/s | 8.8 hours |
| December | 10.1 °C6.2° to 13.1° | 3.8 mm/day | 82.4% | 9.4 m/s | 7.9 hours |
Comparative monthly normals 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.
Examine monthly temperature, precipitation, and wind patterns across diverse regional settings.







Examine the intricate granite cliffs and maritime features that define Gwennap Head in Cornwall. This detailed geographic profile provides a window into the protected landscape, its boundary definition, and the rugged Atlantic environment that shapes the local coastal terrain through the MoriAtlas framework.