Climate averages 1991–2020
Kisii weather
in May.
A warm, wet month: the joint 7th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Kisii: daytime highs average 24.5°C and nights cool to about 15.3°C. By daytime temperature it is the joint 7th warmest of the 12 months.
Expect about 176 mm of rain on roughly 20 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average May day.
The nearest other city in this atlas is Migori (54 km away). In May its highs average 26.2°C, 1.7°C warmer than Kisii, with 151 mm of rain.
Among the 37 cities listed in Kenya, Kisii ranks 19th of 37 for the warmest May highs and 26th of 37 for the driest May (rainfall, lowest first). The mean May high of those 37 cities is 25.2°C; Kisii is 0.7°C cooler than that mean.
From May to June, average highs fall by 0.8°C to 23.7°C, and monthly rainfall falls from 176 mm to 87 mm.
The annual picture
May 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
Kisii climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.1°C14.6°C | 14.6°C | 151 | 16.7 | 12.212 h |
| February | 26.4°C15.0°C | 15.0°C | 99 | 13.0 | 12.112 h |
| March | 26.1°C15.2°C | 15.2°C | 189 | 18.9 | 12.112 h |
| April | 25.0°C15.4°C | 15.4°C | 277 | 23.4 | 12.112 h |
| May, selected | 24.5°C15.3°C | 15.3°C | 176 | 19.6 | 12.112 h |
| June | 23.7°C14.6°C | 14.6°C | 87 | 13.6 | 12.112 h |
| July | 23.6°C14.1°C | 14.1°C | 51 | 10.7 | 12.112 h |
| August | 24.2°C14.2°C | 14.2°C | 77 | 13.1 | 12.112 h |
| September | 25.1°C14.7°C | 14.7°C | 93 | 14.2 | 12.112 h |
| October | 25.3°C15.1°C | 15.1°C | 149 | 17.5 | 12.112 h |
| November | 24.5°C14.6°C | 14.6°C | 260 | 23.3 | 12.112 h |
| December | 24.5°C14.5°C | 14.5°C | 216 | 21.2 | 12.212 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
May in nearby cities
- Migori in MayKenya · 54 kmHigh 26.2°C · Low 17.0°C · 151 mm rain
- Kisumu in MayKenya · 64 kmHigh 26.8°C · Low 18.1°C · 206 mm rain
- Tarime in MayTanzania · 87 kmHigh 26.4°C · Low 16.2°C · 82 mm rain
- Khwisero in MayKenya · 97 kmHigh 24.7°C · Low 16.1°C · 237 mm rain
- Kakamega in MayKenya · 107 kmHigh 24.7°C · Low 14.7°C · 194 mm rain
- Musoma in MayTanzania · 141 kmHigh 26.0°C · Low 19.9°C · 115 mm rain
- Eldoret in MayKenya · 145 kmHigh 22.4°C · Low 13.0°C · 245 mm rain
- Busia in MayKenya · 146 kmHigh 25.6°C · Low 17.0°C · 276 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 Kisii) is explained once on the Kisii year overview and on the Sources, method and limits page.