Split weather by month
Split runs from about 8°C in January to 29°C in August, with September the wettest month at 203 mm.
warmest month
August
29°C
coolest month
January
8°C
wettest month
September
203 mm
worst air month
March
15 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 8°C | 126 mm | 208 h | 12 |
| February | 11°C | 125 mm | 220 h | 10 |
| March | 12°C | 175 mm | 249 h | 15 |
| April | 16°C | 57 mm | 350 h | 11 |
| May | 19°C | 130 mm | 367 h | 7 |
| June | 24°C | 122 mm | 396 h | 9 |
| July | 28°C | 10 mm | 428 h | 6 |
| August | 29°C | 50 mm | 392 h | 8 |
| September | 21°C | 203 mm | 291 h | 6 |
| October | 18°C | 147 mm | 286 h | 6 |
| November | 12°C | 103 mm | 236 h | 9 |
| December | 8°C | 129 mm | 177 h | 14 |
About 3,600 hours of sun a year. Roughly 139 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 2026-05-24. Full method, licences and the list of sources we rejected are on the methodology page.