Kanchanaburi weather by month
Kanchanaburi runs from about 26°C in December to 33°C in April, with October the wettest month at 307 mm.
warmest month
April
33°C
coolest month
December
26°C
wettest month
October
307 mm
worst air month
March
31 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 27°C | 7 mm | 321 h | 25 |
| February | 29°C | 12 mm | 318 h | 29 |
| March | 31°C | 78 mm | 331 h | 31 |
| April | 33°C | 3 mm | 352 h | 31 |
| May | 30°C | 256 mm | 292 h | 16 |
| June | 29°C | 114 mm | 273 h | 7 |
| July | 28°C | 214 mm | 190 h | 6 |
| August | 28°C | 124 mm | 273 h | 6 |
| September | 28°C | 179 mm | 240 h | 7 |
| October | 27°C | 307 mm | 307 h | 13 |
| November | 27°C | 65 mm | 309 h | 15 |
| December | 26°C | 5 mm | 312 h | 14 |
About 3,518 hours of sun a year. Roughly 136 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.