
Dyer Island Nature Reserve Complex
- Annual mean
- 16.8 °C
- Warmest month
- February
- Wettest month
- July
Twelve-month atmospheric averages for temperature, precipitation, wind, and daylight hours.
Analysis of the long-term climatology at Salmonsdam Nature Reserve provides a granular look at annual patterns through consistent monthly averages. Measurements include mean, minimum, and maximum temperatures alongside daily precipitation rates, relative humidity, wind speed, and daylight duration. These figures derive from a single representative coordinate within the Western Cape nature reserve and reflect established climate trends from 1991 through 2020.
Comparative twelve month analysis of average daily thermal ranges and precipitation rates
Analyze long term temperature bounds, average daily precipitation, wind, humidity, and daylight across the calendar year
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 20.7 °C14.8° to 31.9° | 0.9 mm/day | 71.2% | 5.7 m/s | 14 hours |
| February | 20.9 °C15.1° to 33° | 0.8 mm/day | 72.5% | 5.6 m/s | 13.3 hours |
| March | 19.6 °C13.3° to 32.1° | 1.3 mm/day | 74.9% | 5.2 m/s | 12.2 hours |
| April | 17.4 °C10.9° to 30.3° | 1.5 mm/day | 76.6% | 5 m/s | 11.1 hours |
| May | 15.6 °C9.3° to 26.8° | 1.5 mm/day | 78.4% | 4.9 m/s | 10.2 hours |
| June | 13.6 °C7.7° to 23.4° | 2 mm/day | 77.7% | 5.3 m/s | 9.7 hours |
| July | 12.9 °C6.5° to 22.4° | 2 mm/day | 78.7% | 5.3 m/s | 10 hours |
| August | 13.1 °C6.8° to 23.5° | 1.8 mm/day | 79% | 5.5 m/s | 10.8 hours |
| September | 14.3 °C8.3° to 26.5° | 1.2 mm/day | 77.2% | 5.6 m/s | 11.8 hours |
| October | 16.1 °C9.5° to 28.7° | 1.6 mm/day | 74.6% | 5.7 m/s | 12.9 hours |
| November | 17.6 °C11.5° to 30.2° | 1.5 mm/day | 72.3% | 5.8 m/s | 13.8 hours |
| December | 19.6 °C13.4° to 31.2° | 1.1 mm/day | 71.3% | 5.7 m/s | 14.3 hours |
Comparative monthly 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.
Examine monthly temperature, precipitation, and environmental rhythms across diverse geographic settings.





Navigate the rugged terrain and unique river catchment systems of Salmonsdam Nature Reserve. This MoriAtlas destination provides an in-depth look at the mountain landscapes, marshy valley floors, and cave systems that characterize this protected Western Cape reserve.