WEATHER · CLIMATE NORMALS · 1991–2020
Beijing Climate — Averages by Month
What the weather in Beijing, CNaverages across a standard 30-year period. Each month's figure is the 1991–2020 mean temperature and total rainfall from the ERA5 reanalysis — the long-run normal a place settles around, not a forecast for any particular day.
Month-by-month normals
| Month | Avg temperature | Avg rainfall |
|---|---|---|
| January | -3.5 °C · coldest | 3.8 mm |
| February | 0.2 °C | 6.2 mm |
| March | 7.0 °C | 10.2 mm |
| April | 15.6 °C | 20.4 mm |
| May | 22.4 °C | 36.5 mm |
| June | 26.6 °C | 77.7 mm |
| July | 27.8 °C · warmest | 164.6 mm · wettest |
| August | 26.2 °C | 122.6 mm |
| September | 21.1 °C | 58.3 mm |
| October | 13.5 °C | 33.5 mm |
| November | 4.1 °C | 15.4 mm |
| December | -2.1 °C | 4.5 mm |
How to read these numbers
These are reanalysis normals, not readings from a single weather station. They come from the ERA5 0.25° (~25 km) global reanalysis grid, sampled at the grid cell nearest Beijing — centred at 40.00°N, 116.50°E. A reanalysis blends observations with a physics model onto an even grid, so a coastal or mountain city's cell can read a little cooler, warmer, wetter or drier than the city centre itself. The month-to-month shape — when it's hot, when it rains — is what these normals capture best.
“Normal” means the 1991–2020 average, the current World Meteorological Organization standard period. A normal is what a place tends toward over decades — any single day, month or year can and will depart from it.