WEATHER · CLIMATE NORMALS · 1991–2020
Tunis Climate — Averages by Month
What the weather in Tunis, TNaverages 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 | 11.9 °C · coldest | 52.4 mm |
| February | 11.9 °C | 53.5 mm · wettest |
| March | 13.8 °C | 50.3 mm |
| April | 16.2 °C | 45.2 mm |
| May | 19.8 °C | 26.0 mm |
| June | 23.8 °C | 11.1 mm |
| July | 26.6 °C | 2.1 mm |
| August | 27.2 °C · warmest | 9.9 mm |
| September | 24.5 °C | 41.7 mm |
| October | 21.2 °C | 50.5 mm |
| November | 16.7 °C | 52.2 mm |
| December | 13.2 °C | 52.5 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 Tunis — centred at 36.75°N, 10.25°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.