Cape Town Weather in January
South Africa · Mediterranean climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
January in Cape Town sees average temperatures ranging from a low of 17.2°C (63.0°F) to a high of 25.8°C (78.4°F), with a mean of 21.0°C (69.8°F). Compared to the annual average of 16.8°C (62.2°F), this month is 4.2°C warmer than the yearly norm. This is the hottest month of the year, reaching 25.8°C (78.4°F) on average. Precipitation averages 16.0mm, making it approximately 44.0mm drier than the monthly average of 60.0mm. The city receives an average of 13.1 hours of sunshine per day during January, with relative humidity averaging 71.8%. Wind speeds reach an average maximum of 26.2 km/h. For travelers, this month offers a hottest month of the year experience in Cape Town, with drier-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.
January vs Adjacent Months
| Metric | December | January | February |
|---|---|---|---|
| Mean Temp | 19.4°C (66.9°F) | 21.0°C (69.8°F) | 20.9°C (69.6°F) |
| Rainfall | 31.4mm | 16.0mm | 12.6mm |
| Sunshine | 13.0 hrs | 13.1 hrs | 12.0 hrs |
| Humidity | 71.7% | 71.8% | 71.5% |
| Wind | 24.5 km/h | 26.2 km/h | 25.4 km/h |
| Rainy Days | 10.8 | 7.4 | 7.0 |
Seasonal Context
January falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Cape Town in January, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Cape Town in January?
The average temperature in Cape Town during January ranges from 17.2°C (63.0°F) to 25.8°C (78.4°F), with a mean of 21.0°C (69.8°F).
How much does it rain in Cape Town in January?
Cape Town receives an average of 16.0mm of precipitation in January, spread across approximately 7.4 rainy days.
What should I pack for Cape Town in January?
Based on January weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is January a good time to visit Cape Town?
January is a good time to visit Cape Town, with comfortable temperatures and manageable rainfall. However, it is the hottest month — consider early morning or evening activities.
Other Months for Cape Town
Cities with Similar January 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.