Cape Town Weather in August
South Africa · Mediterranean climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Cape Town sees average temperatures ranging from a low of 9.5°C (49.1°F) to a high of 16.3°C (61.3°F), with a mean of 12.8°C (55.0°F). Compared to the annual average of 16.8°C (62.2°F), this month is 4.0°C cooler than the yearly norm. Precipitation averages 108.9mm, making it approximately 49.0mm wetter than the monthly average of 60.0mm. The city receives an average of 8.9 hours of sunshine per day during August, with relative humidity averaging 78.2%. Wind speeds reach an average maximum of 21.2 km/h. For travelers, this month offers a temperature experience in Cape Town, with wetter-than-average conditions compared to the rest of the year.
Cape Town's climate data reveals a fascinating pattern: it's one of the few Southern Hemisphere cities with a true Mediterranean climate. I was there in January (their summer) expecting tropical heat — instead got dry, windy, 26°C days perfect for wine country visits. The data shows December-February as ideal, but watch for the 'Cape Doctor' — a strong southeast wind that can disrupt plans. Winter (June-August) is wet and cool, but the whale watching peaks in July.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 12.8°C (55.0°F) | 12.8°C (55.0°F) | 13.8°C (56.8°F) |
| Rainfall | 137.1mm | 108.9mm | 56.2mm |
| Sunshine | 8.3 hrs | 8.9 hrs | 9.9 hrs |
| Humidity | 79.0% | 78.2% | 76.6% |
| Wind | 20.4 km/h | 21.2 km/h | 22.1 km/h |
| Rainy Days | 15.8 | 16.2 | 13.2 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Cape Town in August, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Cape Town in August?
The average temperature in Cape Town during August ranges from 9.5°C (49.1°F) to 16.3°C (61.3°F), with a mean of 12.8°C (55.0°F).
How much does it rain in Cape Town in August?
Cape Town receives an average of 108.9mm of precipitation in August, spread across approximately 16.2 rainy days.
What should I pack for Cape Town in August?
Based on August weather data, pack warm layers, a medium jacket, and waterproof outerwear. Rain gear is essential — this month averages 108.9mm of precipitation.
Is August a good time to visit Cape Town?
August is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Cape Town
Cities with Similar August Climate (Mediterranean)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: -33.92°, 18.42°. Timezone: Africa/Johannesburg. Last updated: 2026-07-30.