Weather in Cape Town in August 2025
Average weather
Average temperature in Cape Town in August
Going from a maximum of +28°C during the day to a minimum of +7°C during the night, the temperature in August averages around +19°C.
The average maximum temperature goes down 5% by the end of the month, compared with the beginning of the month, from +16°C to +15°C.
Is Cape Town warm or cold in August?
Cape Town is typically mild in August.
Maximum temperatures go up compared to the previous month from +17°C to +17°C. The minimum temperature also goes up from +11°C to +11°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
August is one of the coolest months in Cape Town, here is the comparison with other months:
Water temperature in Cape Town in August
Water in Cape Town in August is Cold. It varies from +14°C to +16°C, with an average of +15°C. This is almost similar to the air temperature, which averages +17°C.
The water temperature in August is one of the coldest of the entire year:
Can you swim in Cape Town in August?
Climate in Cape Town in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +17°C | +17°C | +18°C | ||||
| Min. temperature | ||||||
| +4°C | +3°C | +4°C | ||||
| Max. temperature | ||||||
| +29°C | +28°C | +36°C | ||||
| Rainfall | ||||||
| 87 mm | 77 mm | 46 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 5 m/s | ||||
| Avg. water temperature | ||||||
| +15°C | +15°C | +15°C | ||||
| Humidity | ||||||
| 77% | 77% | 75% | ||||
| Air pressure | ||||||
| 1020 HPa | 1019 HPa | 1018 HPa | ||||
| Sunny days | ||||||
| 11 | 10 | 10 | ||||
| Cloudy days | ||||||
| 6 | 7 | 9 | ||||
| Rainy days | ||||||
| 13 | 13 | 12 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as ok as in July. The temperature levels stay the same in the area of +17°C for average maximum temperature during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 87 mm to 77 mm. Humidity levels don’t change as the month goes on, averaging around 77%. The average wind speed doesn’t change much during August, staying around 4 m/s. The days becoming less sunny, going from 11 sunny days in July to 10 in August.
But maybe it is worth considering traveling in September as the weather gets better.
Wind
The average wind speed is 4 m/s getting up to 10 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Cape Town is gradually increasing during August, going from 2 m/s to 5 m/s over the course of the month.
Rain
How was the weather last August in Cape Town?
Climate Change over Years
The climate in Cape Town in August has not changed much over the last 43 years.
The average temperature was the lowest in 1996 (+18°C) and the highest in 2022 (+22°C). The driest year was 2017 with only 308 mm of rainfall, and the wettest year was 2023 with 1389 mm.
FAQ
Is August a good time to visit Cape Town?
Can you sunbathe in Cape Town in August?
Can you swim in Cape Town in August?
Is Cape Town rainy in August?
Is it sunny in Cape Town in August?
Other cities in South Africa
Monthly weather in Cape Town
Source of the data
For this page, we’ve looked at the typical weather in Cape Town, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.