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Climate guideThirty-year normals for Arusha
Arusha climate by month
Warm-summer Mediterranean · CsbBest Jul–Sep
Annual mean19°day and night
Seasonal swing6°warmest vs coolest
Precipitation863 mm189 wet days a year
3.37° S, 36.68° EElevation 1,415 mUTC+3 · East Africa Time
When to goArusha · weather score
Best timeJul–Sep
October: high / low25° / 14°
iSummary
What the weather is like
Arusha has a warm-summer Mediterranean climate (Köppen Csb): dry, sunny summers and mild, wetter winters.
The warmest month is February, when afternoons average 28° and nights 15°. July is the coolest month, with highs of 21° and lows of 11°. The difference between the warmest and the coolest month is about 6°, a small seasonal swing typical of places tempered by the sea.
About 863 mm of precipitation falls in an average year. April is the wettest month (232 mm, 25 wet days) and July the driest (12 mm, 7 wet days). Cloud cover ranges from 28% in September to 53% in April.
Compared with Dodoma, the capital, Arusha is 0.7° cooler on a February afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 28° · February
- Coldest nights
- 11° · July
- Wettest month
- April
- Driest month
- July
- Clearest skies
- September · 28% cloud
- Longest day
- 12 h 19 min
- Shortest day
- 11 h 56 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 27° | 28° | 27° | 24° | 22° | 21° | 21° | 22° | 24° | 25° | 25° | 26° |
| Average low | 15° | 15° | 16° | 16° | 15° | 12° | 11° | 12° | 13° | 14° | 15° | 15° |
| Precipitation | 61 mm | 53 mm | 128 mm | 232 mm | 118 mm | 20 mm | 12 mm | 9 mm | 8 mm | 34 mm | 96 mm | 92 mm |
| Wet days (≥1 mm) | 16.3 | 13.3 | 18.9 | 24.6 | 21.7 | 11.2 | 7.3 | 8.9 | 8 | 14.1 | 21.6 | 23.5 |
| Cloud cover | 30% | 32% | 38% | 53% | 50% | 44% | 40% | 38% | 28% | 33% | 39% | 33% |
| Daylight | 12h 18 | 12h 13 | 12h 08 | 12h 02 | 11h 58 | 11h 56 | 11h 57 | 12h 00 | 12h 05 | 12h 11 | 12h 16 | 12h 19 |
| Month score | 61 | 57 | 57 | 57 | 59 | 68 | 79 | 76 | 81 | 65 | 62 | 64 |
ivMonth by month
Arusha in every month
January61
27° / 15°
61 mm · 16.3 wet days
February57
28° / 15°
53 mm · 13.3 wet days
March57
27° / 16°
128 mm · 18.9 wet days
April57
24° / 16°
232 mm · 24.6 wet days
May59
22° / 15°
118 mm · 21.7 wet days
June68
21° / 12°
20 mm · 11.2 wet days
July79
21° / 11°
12 mm · 7.3 wet days
August76
22° / 12°
9 mm · 8.9 wet days
September81
24° / 13°
8 mm · 8 wet days
October65
25° / 14°
34 mm · 14.1 wet days
November62
25° / 15°
96 mm · 21.6 wet days
December64
26° / 15°
92 mm · 23.5 wet days