
Dassen Island
- Annual mean
- 16.9 °C
- Warmest month
- February
- Wettest month
- June
Long-term atmospheric averages at a representative coordinate in the Western Cape region.
Detailed twelve-month climatology for West Coast National Park covering mean, minimum, and maximum temperatures alongside precipitation rates and relative humidity levels. These records reflect long-term averages for the 1991 to 2020 period at a specific representative elevation of 42.02 meters. Measurements for wind speed and daylight hours provide further context for the annual environmental rhythm at this South African protected area.

Long term monthly temperature ranges and average daily precipitation cycles across the calendar year
Analyze long-term temperature bounds, average daily precipitation, humidity, wind speed, and calculated daylight across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 21.1 °C14.7° to 31.5° | 0.3 mm/day | 68.6% | 6.2 m/s | 13.9 hours |
| February | 21.3 °C15.2° to 32.4° | 0.3 mm/day | 68.9% | 5.7 m/s | 13.2 hours |
| March | 20.1 °C13.8° to 31.6° | 0.4 mm/day | 70.4% | 5.2 m/s | 12.2 hours |
| April | 18 °C11.3° to 30° | 0.9 mm/day | 71.6% | 4.6 m/s | 11.2 hours |
| May | 15.9 °C9.8° to 26.3° | 1.4 mm/day | 76.1% | 4.2 m/s | 10.3 hours |
| June | 14 °C8° to 22.7° | 2.3 mm/day | 76.9% | 4.7 m/s | 9.8 hours |
| July | 13.2 °C6.8° to 21.5° | 2 mm/day | 78.3% | 4.7 m/s | 10.1 hours |
| August | 13.4 °C7.3° to 23° | 1.7 mm/day | 78.9% | 4.7 m/s | 10.8 hours |
| September | 14.8 °C8.6° to 26.1° | 1 mm/day | 76.6% | 4.9 m/s | 11.8 hours |
| October | 16.8 °C9.8° to 29.2° | 0.7 mm/day | 72.2% | 5.3 m/s | 12.9 hours |
| November | 18.3 °C11.9° to 30° | 0.8 mm/day | 69.6% | 5.8 m/s | 13.7 hours |
| December | 20.2 °C13.8° to 30.8° | 0.3 mm/day | 68.9% | 5.9 m/s | 14.2 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Comparing long-term monthly averages for temperature, precipitation, humidity, wind, and daylight duration.
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Explore monthly temperature, precipitation, and wind patterns across diverse regional settings.





Deepen your understanding of West Coast National Park by exploring its detailed geographic features and protected area distribution. This MoriAtlas entry provides the foundational context for appreciating the park's place within the Western Cape's natural landscape and atlas exploration.