Climate averages 1991–2020
Isiolo weather
in April.
A hot, moderately wet month: the 6th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Isiolo: daytime highs average 28.7°C and nights cool to about 18.8°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 76 mm of rain on roughly 11 days, which makes April a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average April day.
The nearest other city in this atlas is Meru (35 km away). In April its highs average 24.2°C, 4.5°C cooler than Isiolo, with 84 mm of rain.
Among the 37 cities listed in Kenya, Isiolo ranks 11th of 37 for the warmest April highs and 4th of 37 for the driest April (rainfall, lowest first). The mean April high of those 37 cities is 26.3°C; Isiolo is 2.5°C warmer than that mean.
From April to May, average highs rise by 0.2°C to 28.9°C, and monthly rainfall falls from 76 mm to 47 mm.
The annual picture
April 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
Isiolo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.1°C16.6°C | 16.6°C | 41 | 8.2 | 12.112 h |
| February | 29.4°C17.2°C | 17.2°C | 23 | 4.9 | 12.112 h |
| March | 29.5°C18.1°C | 18.1°C | 43 | 8.6 | 12.112 h |
| April, selected | 28.7°C18.8°C | 18.8°C | 76 | 11.2 | 12.112 h |
| May | 28.9°C18.5°C | 18.5°C | 47 | 7.5 | 12.112 h |
| June | 28.0°C17.4°C | 17.4°C | 28 | 5.6 | 12.112 h |
| July | 27.2°C16.7°C | 16.7°C | 38 | 7.8 | 12.112 h |
| August | 27.7°C16.7°C | 16.7°C | 40 | 9.0 | 12.112 h |
| September | 29.2°C17.2°C | 17.2°C | 27 | 5.7 | 12.112 h |
| October | 29.0°C18.3°C | 18.3°C | 52 | 10.0 | 12.112 h |
| November | 26.2°C17.6°C | 17.6°C | 99 | 19.8 | 12.112 h |
| December | 26.7°C16.6°C | 16.6°C | 55 | 13.3 | 12.112 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
April in nearby cities
- Meru in AprilKenya · 35 kmHigh 24.2°C · Low 15.9°C · 84 mm rain
- Nanyuki in AprilKenya · 69 kmHigh 22.5°C · Low 13.5°C · 218 mm rain
- Nyeri in AprilKenya · 111 kmHigh 21.5°C · Low 13.4°C · 206 mm rain
- Karuri (Murang'A), Kenya in AprilKenya · 125 kmHigh 25.0°C · Low 16.3°C · 201 mm rain
- Thika in AprilKenya · 165 kmHigh 24.4°C · Low 15.9°C · 179 mm rain
- Naivasha in AprilKenya · 175 kmHigh 22.3°C · Low 14.3°C · 181 mm rain
- Ruiru in AprilKenya · 181 kmHigh 24.3°C · Low 15.7°C · 120 mm rain
- Nakuru in AprilKenya · 183 kmHigh 24.3°C · Low 13.6°C · 104 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 Isiolo) is explained once on the Isiolo year overview and on the Sources, method and limits page.