Kisumu weather by month
Kisumu runs from about 22°C in January to 24°C in March, with November the wettest month at 181 mm.
warmest month
March
24°C
coolest month
January
22°C
wettest month
November
181 mm
worst air month
July
30 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 22°C | 154 mm | 336 h | 19 |
| February | 23°C | 41 mm | 331 h | 22 |
| March | 24°C | 44 mm | 363 h | 18 |
| April | 22°C | 126 mm | 318 h | 18 |
| May | 23°C | 54 mm | 338 h | 21 |
| June | 23°C | 33 mm | 337 h | 25 |
| July | 22°C | 76 mm | 327 h | 30 |
| August | 22°C | 38 mm | 337 h | 27 |
| September | 23°C | 58 mm | 329 h | 24 |
| October | 23°C | 83 mm | 342 h | 20 |
| November | 22°C | 181 mm | 313 h | 18 |
| December | 22°C | 90 mm | 345 h | 19 |
About 4,016 hours of sun a year. Roughly 97 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 2026-05-27. Full method, licences and the list of sources we rejected are on the methodology page.