Basse-Terre weather by month
Basse-Terre runs from about 25°C in January to 28°C in October, with July the wettest month at 168 mm.
warmest month
October
28°C
coolest month
January
25°C
wettest month
July
168 mm
worst air month
June
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 25°C | 102 mm | 329 h | 6 |
| February | 25°C | 64 mm | 307 h | 7 |
| March | 26°C | 115 mm | 358 h | 7 |
| April | 26°C | 94 mm | 354 h | 6 |
| May | 28°C | 101 mm | 345 h | 9 |
| June | 28°C | 130 mm | 337 h | 12 |
| July | 27°C | 168 mm | 322 h | 11 |
| August | 27°C | 141 mm | 327 h | 8 |
| September | 27°C | 122 mm | 320 h | 6 |
| October | 28°C | 63 mm | 351 h | 6 |
| November | 27°C | 154 mm | 302 h | 5 |
| December | 25°C | 92 mm | 323 h | 6 |
About 3,975 hours of sun a year. Roughly 133 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.