WEATHER · CLIMATE NORMALS · 1991–2020
La Paz Climate — Averages by Month
What the weather in La Paz, BOaverages 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 | 8.6 °C | 140.9 mm · wettest |
| February | 8.4 °C | 124.5 mm |
| March | 8.3 °C | 98.0 mm |
| April | 7.9 °C | 50.3 mm |
| May | 7.0 °C | 20.2 mm |
| June | 5.8 °C | 14.8 mm |
| July | 5.5 °C · coldest | 18.7 mm |
| August | 6.5 °C | 27.1 mm |
| September | 7.7 °C | 42.1 mm |
| October | 8.9 °C | 62.4 mm |
| November | 9.7 °C · warmest | 64.4 mm |
| December | 9.2 °C | 120.5 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 La Paz — centred at 16.50°S, 68.25°W. 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.