Climate averages 1991–2020
Arusha weather
in May.
A warm, moderately wet month: the 10th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Arusha: daytime highs average 22.6°C and nights cool to about 15.2°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 50 mm of rain on roughly 12 days, which makes May a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 58 min on an average May day.
The nearest other city in this atlas is Kondoa (198 km away). In May its highs average 24.9°C, 2.3°C warmer than Arusha, with 27 mm of rain.
Among the 43 cities listed in Tanzania, Arusha ranks joint 38th of 43 for the warmest May highs and 24th of 43 for the driest May (rainfall, lowest first). The mean May high of those 43 cities is 26.1°C; Arusha is 3.4°C cooler than that mean.
From May to June, average highs fall by 0.9°C to 21.7°C, and monthly rainfall falls from 50 mm to 6.6 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
Arusha climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.7°C16.1°C | 16.1°C | 82 | 10.6 | 12.312 h |
| February | 28.4°C16.5°C | 16.5°C | 73 | 9.0 | 12.212 h |
| March | 27.2°C16.8°C | 16.8°C | 143 | 16.7 | 12.112 h |
| April | 24.3°C16.7°C | 16.7°C | 145 | 21.7 | 12.012 h |
| May, selected | 22.6°C15.2°C | 15.2°C | 50 | 11.9 | 12.012 h |
| June | 21.7°C13.0°C | 13.0°C | 6.6 | 2.3 | 11.912 h |
| July | 21.5°C11.9°C | 11.9°C | 3.9 | 1.1 | 11.912 h |
| August | 22.8°C12.7°C | 12.7°C | 3.6 | 1.1 | 12.012 h |
| September | 25.0°C13.7°C | 13.7°C | 4.1 | 1.1 | 12.112 h |
| October | 26.2°C15.2°C | 15.2°C | 30 | 7.3 | 12.212 h |
| November | 26.0°C16.2°C | 16.2°C | 103 | 17.7 | 12.312 h |
| December | 26.4°C16.1°C | 16.1°C | 108 | 16.7 | 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
May in nearby cities
- Kondoa in MayTanzania · 198 kmHigh 24.9°C · Low 15.3°C · 27 mm rain
- Kitengela in MayKenya · 212 kmHigh 23.4°C · Low 15.5°C · 80 mm rain
- Ongata Rongai in MayKenya · 219 kmHigh 22.8°C · Low 14.7°C · 82 mm rain
- Mlolongo in MayKenya · 221 kmHigh 23.3°C · Low 15.2°C · 80 mm rain
- Ngong in MayKenya · 224 kmHigh 22.2°C · Low 13.9°C · 92 mm rain
- Nairobi in MayKenya · 232 kmHigh 23.2°C · Low 14.9°C · 92 mm rain
- Kikuyu in MayKenya · 236 kmHigh 21.0°C · Low 13.1°C · 92 mm rain
- Mwala in MayKenya · 240 kmHigh 24.7°C · Low 16.6°C · 40 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 Arusha) is explained once on the Arusha year overview and on the Sources, method and limits page.