
South Downs National Park
- Annual mean
- 10.8 °C
- Warmest month
- August
- Wettest month
- November
Long term atmospheric averages for a representative point in Surrey, UK
Wraysbury Reservoir climate normals represent long term annual patterns derived from NASA POWER datasets between 1991 and 2020. This profile details monthly average minimum and maximum temperatures, daily precipitation rates, relative humidity, wind speed, and daylight hours at a single representative coordinate. These statistics provide an objective reference for atmospheric conditions, specifically excluding current weather, short term forecasts, and operational visitor advice.

Comparing twelve months of average minimum, mean, and maximum temperatures alongside daily precipitation rates.
Trace temperature bounds, average daily precipitation, humidity, wind speed, and calculated daylight across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 4 °C-3.9° to 11.5° | 2.2 mm/day | 94.2% | 5.8 m/s | 8.2 hours |
| February | 4.1 °C-3.9° to 12.4° | 1.9 mm/day | 91.6% | 5.6 m/s | 9.7 hours |
| March | 6.1 °C-2.3° to 15.8° | 1.6 mm/day | 87.5% | 5.3 m/s | 11.6 hours |
| April | 8.6 °C-1° to 19.6° | 1.7 mm/day | 83% | 4.8 m/s | 13.6 hours |
| May | 12 °C1.5° to 23° | 1.8 mm/day | 79.9% | 4.7 m/s | 15.4 hours |
| June | 15.2 °C5.8° to 26.4° | 2 mm/day | 77.5% | 4.4 m/s | 16.3 hours |
| July | 17.6 °C8.6° to 29.1° | 1.8 mm/day | 74.2% | 4.4 m/s | 15.9 hours |
| August | 17.4 °C8° to 29° | 2.1 mm/day | 75.4% | 4.4 m/s | 14.3 hours |
| September | 14.5 °C5.7° to 24.9° | 1.9 mm/day | 80.2% | 4.6 m/s | 12.3 hours |
| October | 10.8 °C1.8° to 20.3° | 2.5 mm/day | 87% | 5.2 m/s | 10.3 hours |
| November | 7 °C-1.3° to 15.4° | 2.6 mm/day | 93% | 5.2 m/s | 8.6 hours |
| December | 4.5 °C-3.4° to 12.1° | 2.4 mm/day | 94.9% | 5.5 m/s | 7.7 hours |
Comparative analysis of long-term monthly averages across temperature, humidity, 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 regional atmospheric patterns across diverse protected landscapes



Investigate the unique intersection of industrial utility and ecological conservation at Wraysbury Reservoir. Use MoriAtlas to understand the boundaries, environmental significance, and technical landscape role of this vital nature reserve within the northern Surrey region.