Climate averages 1991–2020
Jomvu weather
in September.
A hot, fairly dry month: the 8th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Jomvu: daytime highs average 28.4°C and nights cool to about 22.2°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 38 mm of rain on roughly 15 days, which makes September a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average September day.
The nearest other city in this atlas is Mombasa (10 km away). In September its highs average 27.7°C, 0.7°C cooler than Jomvu, with 43 mm of rain.
Among the 37 cities listed in Kenya, Jomvu ranks joint 6th of 37 for the warmest September highs and 21st of 37 for the driest September (rainfall, lowest first). The mean September high of those 37 cities is 25.7°C; Jomvu is 2.7°C warmer than that mean.
From September to October, average highs rise by 1.0°C to 29.4°C, and monthly rainfall rises from 38 mm to 69 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Jomvu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.2°C24.3°C | 24.3°C | 28 | 5.7 | 12.312 h |
| February | 33.0°C24.3°C | 24.3°C | 20 | 4.2 | 12.212 h |
| March | 32.5°C24.7°C | 24.7°C | 62 | 15.5 | 12.112 h |
| April | 30.3°C24.5°C | 24.5°C | 108 | 22.8 | 12.012 h |
| May | 28.2°C23.7°C | 23.7°C | 155 | 20.4 | 11.912 h |
| June | 27.4°C22.8°C | 22.8°C | 58 | 15.8 | 11.912 h |
| July | 26.9°C22.0°C | 22.0°C | 46 | 15.0 | 11.912 h |
| August | 27.4°C21.7°C | 21.7°C | 40 | 15.1 | 12.012 h |
| September, selected | 28.4°C22.2°C | 22.2°C | 38 | 14.5 | 12.112 h |
| October | 29.4°C22.8°C | 22.8°C | 69 | 15.5 | 12.212 h |
| November | 30.2°C23.3°C | 23.3°C | 83 | 19.5 | 12.312 h |
| December | 31.3°C24.0°C | 24.0°C | 70 | 17.0 | 12.312 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Mombasa in SeptemberKenya · 10 kmHigh 27.7°C · Low 22.6°C · 43 mm rain
- Mtwapa in SeptemberKenya · 16 kmHigh 28.4°C · Low 22.6°C · 43 mm rain
- Matuga in SeptemberKenya · 21 kmHigh 26.5°C · Low 22.0°C · 52 mm rain
- Ukunda in SeptemberKenya · 34 kmHigh 27.1°C · Low 22.6°C · 52 mm rain
- Kilifi in SeptemberKenya · 48 kmHigh 27.8°C · Low 23.0°C · 33 mm rain
- Malindi in SeptemberKenya · 102 kmHigh 27.1°C · Low 23.5°C · 30 mm rain
- Tanga in SeptemberTanzania · 133 kmHigh 28.5°C · Low 21.6°C · 40 mm rain
- Handeni in SeptemberTanzania · 239 kmHigh 26.1°C · Low 17.9°C · 38 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Jomvu) is explained once on the Jomvu year overview and on the Sources, method and limits page.