WEATHER · CLIMATE NORMALS · 1991–2020
Lagos Climate — Averages by Month
What the weather in Lagos, NGaverages 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 | 27.1 °C | 37.8 mm |
| February | 27.9 °C | 53.4 mm |
| March | 28.1 °C · warmest | 102.5 mm |
| April | 27.9 °C | 143.1 mm |
| May | 27.4 °C | 229.9 mm |
| June | 26.2 °C | 305.0 mm · wettest |
| July | 25.3 °C | 226.5 mm |
| August | 24.9 °C · coldest | 153.9 mm |
| September | 25.4 °C | 205.0 mm |
| October | 26.3 °C | 189.6 mm |
| November | 27.3 °C | 90.8 mm |
| December | 27.4 °C | 41.6 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 Lagos — centred at 6.50°N, 3.50°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.