Chongqing weather by month
Chongqing runs from about 8°C in December to 31°C in August, with April the wettest month at 291 mm.
warmest month
August
31°C
coolest month
December
8°C
wettest month
April
291 mm
worst air month
December
84 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 9°C | 43 mm | 86 h | 70 |
| February | 10°C | 30 mm | 117 h | 60 |
| March | 16°C | 46 mm | 171 h | 39 |
| April | 20°C | 291 mm | 194 h | 33 |
| May | 22°C | 226 mm | 230 h | 35 |
| June | 24°C | 234 mm | 188 h | 40 |
| July | 29°C | 245 mm | 265 h | 31 |
| August | 31°C | 46 mm | 358 h | 22 |
| September | 30°C | 78 mm | 313 h | 29 |
| October | 19°C | 124 mm | 142 h | 30 |
| November | 15°C | 114 mm | 84 h | 65 |
| December | 8°C | 43 mm | 83 h | 84 |
About 2,231 hours of sun a year. Roughly 152 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.