Shimla weather by month
Shimla runs from about 3°C in February to 21°C in June, with August the wettest month at 297 mm.
warmest month
June
21°C
coolest month
February
3°C
wettest month
August
297 mm
worst air month
January
36 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 3°C | 19 mm | 300 h | 36 |
| February | 3°C | 100 mm | 262 h | 29 |
| March | 8°C | 129 mm | 302 h | 20 |
| April | 12°C | 67 mm | 324 h | 12 |
| May | 19°C | 17 mm | 379 h | 22 |
| June | 21°C | 94 mm | 348 h | 24 |
| July | 18°C | 171 mm | 319 h | 20 |
| August | 17°C | 297 mm | 251 h | 20 |
| September | 16°C | 189 mm | 267 h | 25 |
| October | 13°C | 6 mm | 340 h | 24 |
| November | 8°C | 1 mm | 301 h | 28 |
| December | 4°C | 58 mm | 280 h | 31 |
About 3,673 hours of sun a year. Roughly 116 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.