Hot in Jan
30°C average high
avg high · 21° at night
25°C+ on almost every day
South Africa
Cape Town weather in January
Is it warm? Yes. January in Cape Town is warm: afternoons average 26°C and nights 18°C. Most days (80%) peak between 22°C and 31°C.
Warm · average high
26°C
25°C or more on about six in ten days; 20°C or more on almost every day.
- Average low18°overnight
- Sea14°average, 2023–2025
- Rainy days213 mm in the month
- SkySome cloud27% cloud · 62% clear days
How warm it really gets
Every January afternoon from 2011–2025: 465 days. Most (80%) peaked between 22° and 31°.
January, year by year
The average January high in each year. The warmest, 2016, averaged 29°C; the coolest, 2019, 24°C.
Compared with home
Average January highs. Expect rain on about 2 days (13 mm in a typical month).
- Cape Town26°
- Cork9°
- Dublin8°
- London8°
- Belfast7°
- Manchester7°
- Glasgow6°
Warmer in January, not much further
Flying times are estimates from Dublin; Cape Town is about 12h 45m.
Warm in Jan
27°C average high
avg high · 24° at night
25°C+ on almost every day
Warm in Jan
28°C average high
avg high · 24° at night
25°C+ on almost every day
Air: ERA5 reanalysis via Open-Meteo, 2011–2025. Sea: Copernicus Marine analysis via Open-Meteo, 2023–2025. Rainy day = 2 mm or more. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology