Plettenberg Bay weather by month
Plettenberg Bay runs from about 13°C in July to 21°C in December, with June the wettest month at 106 mm.
warmest month
December
21°C
coolest month
July
13°C
wettest month
June
106 mm
worst air month
January
8 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 20°C | 55 mm | 350 h | 8 |
| February | 20°C | 17 mm | 343 h | 8 |
| March | 20°C | 24 mm | 321 h | 8 |
| April | 17°C | 100 mm | 270 h | 4 |
| May | 16°C | 13 mm | 278 h | 5 |
| June | 15°C | 106 mm | 231 h | 5 |
| July | 13°C | 28 mm | 246 h | 5 |
| August | 13°C | 14 mm | 297 h | 6 |
| September | 14°C | 56 mm | 289 h | 6 |
| October | 17°C | 77 mm | 343 h | 7 |
| November | 18°C | 58 mm | 346 h | 7 |
| December | 21°C | 14 mm | 398 h | 7 |
About 3,712 hours of sun a year. Roughly 57 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 2026-05-27. Full method, licences and the list of sources we rejected are on the methodology page.