Phuket weather by month
Phuket runs from about 26°C in September to 30°C in April, with September the wettest month at 341 mm.
warmest month
April
30°C
coolest month
September
26°C
wettest month
September
341 mm
worst air month
April
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 27°C | 40 mm | 338 h | 12 |
| February | 29°C | 21 mm | 325 h | 10 |
| March | 29°C | 74 mm | 342 h | 11 |
| April | 30°C | 79 mm | 338 h | 12 |
| May | 29°C | 215 mm | 323 h | 7 |
| June | 28°C | 222 mm | 256 h | 7 |
| July | 27°C | 195 mm | 238 h | 9 |
| August | 27°C | 253 mm | 276 h | 8 |
| September | 26°C | 341 mm | 243 h | 7 |
| October | 27°C | 252 mm | 292 h | 5 |
| November | 27°C | 214 mm | 260 h | 9 |
| December | 27°C | 151 mm | 279 h | 9 |
About 3,510 hours of sun a year. Roughly 201 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.