Cape Town weather by month
Cape Town runs from about 12°C in July to 22°C in January, with July the wettest month at 315 mm.
warmest month
January
22°C
coolest month
July
12°C
wettest month
July
315 mm
worst air month
June
30 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 22°C | 4 mm | 403 h | 17 |
| February | 21°C | 12 mm | 357 h | 19 |
| March | 20°C | 26 mm | 332 h | 20 |
| April | 17°C | 38 mm | 289 h | 20 |
| May | 16°C | 23 mm | 267 h | 18 |
| June | 15°C | 74 mm | 241 h | 30 |
| July | 12°C | 315 mm | 212 h | 20 |
| August | 12°C | 139 mm | 247 h | 21 |
| September | 14°C | 26 mm | 303 h | 18 |
| October | 18°C | 11 mm | 376 h | 16 |
| November | 19°C | 15 mm | 378 h | 15 |
| December | 20°C | 28 mm | 394 h | 15 |
About 3,799 hours of sun a year. Roughly 70 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-22. Full method, licences and the list of sources we rejected are on the methodology page.