Thimphu weather by month
Thimphu runs from about 4°C in January to 19°C in July, with July the wettest month at 650 mm.
warmest month
July
19°C
coolest month
January
4°C
wettest month
July
650 mm
worst air month
February
19 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 4°C | 141 mm | 260 h | 14 |
| February | 4°C | 91 mm | 260 h | 19 |
| March | 9°C | 184 mm | 281 h | 14 |
| April | 13°C | 183 mm | 333 h | 11 |
| May | 15°C | 303 mm | 323 h | 7 |
| June | 17°C | 509 mm | 242 h | 6 |
| July | 19°C | 650 mm | 238 h | 4 |
| August | 18°C | 403 mm | 301 h | 4 |
| September | 17°C | 401 mm | 291 h | 5 |
| October | 14°C | 250 mm | 267 h | 8 |
| November | 10°C | 129 mm | 283 h | 9 |
| December | 7°C | 58 mm | 294 h | 11 |
About 3,373 hours of sun a year. Roughly 253 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 2026-05-25. Full method, licences and the list of sources we rejected are on the methodology page.