Hat Yai weather by month
Hat Yai runs from about 26°C in November to 29°C in April, with November the wettest month at 512 mm.
warmest month
April
29°C
coolest month
November
26°C
wettest month
November
512 mm
worst air month
January
14 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 26°C | 53 mm | 312 h | 14 |
| February | 28°C | 12 mm | 315 h | 12 |
| March | 29°C | 37 mm | 333 h | 12 |
| April | 29°C | 64 mm | 332 h | 13 |
| May | 28°C | 258 mm | 303 h | 9 |
| June | 28°C | 154 mm | 287 h | 9 |
| July | 28°C | 177 mm | 255 h | 11 |
| August | 27°C | 323 mm | 293 h | 11 |
| September | 27°C | 360 mm | 277 h | 7 |
| October | 26°C | 394 mm | 289 h | 6 |
| November | 26°C | 512 mm | 198 h | 9 |
| December | 26°C | 225 mm | 247 h | 11 |
About 3,441 hours of sun a year. Roughly 218 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.