Climate averages 1991–2020
Mombasa weather
in August.
A warm, moderately wet month: the 11th warmest and the joint 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Mombasa: daytime highs average 26.7°C and nights cool to about 22.2°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 49 mm of rain on roughly 17 days, which makes August a moderately wet month (the joint 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 59 min on an average August day.
The nearest other city in this atlas is Jomvu (10 km away). In August its highs average 27.4°C, 0.6°C warmer than Mombasa, with 40 mm of rain.
Among the 37 cities listed in Kenya, Mombasa ranks 11th of 37 for the warmest August highs and joint 22nd of 37 for the driest August (rainfall, lowest first). The mean August high of those 37 cities is 24.3°C; Mombasa is 2.4°C warmer than that mean.
From August to September, average highs rise by 1.0°C to 27.7°C, and monthly rainfall falls from 49 mm to 43 mm.
The annual picture
August 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
Mombasa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.1°C24.7°C | 24.7°C | 18 | 3.5 | 12.312 h |
| February | 31.8°C24.7°C | 24.7°C | 11 | 2.4 | 12.212 h |
| March | 31.6°C25.0°C | 25.0°C | 49 | 12.4 | 12.112 h |
| April | 29.6°C24.7°C | 24.7°C | 136 | 24.4 | 12.012 h |
| May | 27.8°C23.9°C | 23.9°C | 223 | 24.1 | 11.912 h |
| June | 26.9°C23.2°C | 23.2°C | 92 | 20.5 | 11.912 h |
| July | 26.3°C22.4°C | 22.4°C | 69 | 19.8 | 11.912 h |
| August, selected | 26.7°C22.2°C | 22.2°C | 49 | 17.2 | 12.012 h |
| September | 27.7°C22.6°C | 22.6°C | 43 | 14.8 | 12.112 h |
| October | 28.6°C23.2°C | 23.2°C | 75 | 14.9 | 12.212 h |
| November | 29.5°C23.7°C | 23.7°C | 66 | 16.1 | 12.312 h |
| December | 30.5°C24.4°C | 24.4°C | 46 | 13.0 | 12.412 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
August in nearby cities
- Jomvu in AugustKenya · 10 kmHigh 27.4°C · Low 21.7°C · 40 mm rain
- Mtwapa in AugustKenya · 16 kmHigh 27.5°C · Low 22.1°C · 49 mm rain
- Matuga in AugustKenya · 16 kmHigh 25.6°C · Low 21.5°C · 61 mm rain
- Ukunda in AugustKenya · 29 kmHigh 26.3°C · Low 22.2°C · 61 mm rain
- Kilifi in AugustKenya · 52 kmHigh 27.0°C · Low 22.7°C · 35 mm rain
- Malindi in AugustKenya · 106 kmHigh 26.3°C · Low 23.2°C · 34 mm rain
- Tanga in AugustTanzania · 129 kmHigh 27.5°C · Low 21.0°C · 40 mm rain
- Handeni in AugustTanzania · 238 kmHigh 24.9°C · Low 17.1°C · 41 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 Mombasa) is explained once on the Mombasa year overview and on the Sources, method and limits page.
Mtwapa lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.