Home › Cities › Tanzania › Arusha
Arusha, Tanzania climate
Aw Tropical savanna (dry winter)
Arusha has a remarkably steady warm-temperate climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is February with an average daily high near 32°C, while the coldest is July averaging around 13°C at night. Precipitation totals about 798 mm a year and is strongly seasonal — April alone averages 157 mm while September barely receives 12 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Arusha climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 31 | 28 | 26 | 26 | 26 | 28 | 30 | 31 | 30 | 30 |
| Avg temp (°C) | 24 | 25 | 24 | 23 | 21 | 20 | 20 | 21 | 22 | 23 | 24 | 24 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 16 | 14 | 13 | 14 | 15 | 16 | 17 | 18 |
| Precipitation (mm) | 77 | 68 | 133 | 157 | 82 | 21 | 16 | 16 | 12 | 33 | 89 | 96 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 31 | 28 | 26 | 26 |
| Avg temp (°C) | 24 | 25 | 24 | 23 | 21 | 20 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 16 | 14 |
| Precipitation (mm) | 77 | 68 | 133 | 157 | 82 | 21 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 28 | 30 | 31 | 30 | 30 |
| Avg temp (°C) | 20 | 21 | 22 | 23 | 24 | 24 |
| Avg low (°C) | 13 | 14 | 15 | 16 | 17 | 18 |
| Precipitation (mm) | 16 | 16 | 12 | 33 | 89 | 96 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 13 | 14 | 10 | 0.9 | — | — | — | 0.0 | 0.8 | 4 | 2 | 6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 13 | 14 | 10 | 0.9 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | — | 0.0 | 0.8 | 4 | 2 | 6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 56 | 65 | 72 | 65 | 60 | 56 | 54 | 45 | 53 | 65 | 62 |
| Relative humidity (%) | 62 | 60 | 67 | 77 | 80 | 75 | 70 | 65 | 61 | 61 | 69 | 69 |
| Wind speed (m/s) | 1.5 | 1.6 | 2.1 | 2.8 | 2.9 | 2.8 | 3.0 | 3.6 | 4.0 | 4.0 | 3.1 | 1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 56 | 65 | 72 | 65 | 60 |
| Relative humidity (%) | 62 | 60 | 67 | 77 | 80 | 75 |
| Wind speed (m/s) | 1.5 | 1.6 | 2.1 | 2.8 | 2.9 | 2.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 54 | 45 | 53 | 65 | 62 |
| Relative humidity (%) | 70 | 65 | 61 | 61 | 69 | 69 |
| Wind speed (m/s) | 3.0 | 3.6 | 4.0 | 4.0 | 3.1 | 1.9 |
Methodology & sources
Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.