Monthly Climate
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Best time to visit Arusha

August is the best time to visit Arusha for general sightseeing, with average highs of 23 °C and about 2 wet days. The comfortable season runs roughly June to October.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking August comfort 97/100
The least cloud September 51 % average cloud cover
The least rain August 8 mm
Warmth February 28 °C
Cooler weather July 21 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 August 97 23 °C 2
2 September 96 25 °C 2
3 July 95 21 °C 2
4 June 95 22 °C 3
5 October 89 26 °C 7
6 May 84 23 °C 12
7 February 81 28 °C 9
8 January 80 28 °C 11
9 December 75 26 °C 16
10 November 75 26 °C 17
11 April 72 24 °C 22
12 March 72 27 °C 17

When to think twice

March scores lowest with about 17 wet days and highs near 27 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January 27.5 °C 86 mm 60 %
February 28.2 °C 78 mm 58 %
March 27.1 °C 146 mm 66 %
April 24.2 °C 174 mm 78 %
May 22.5 °C 73 mm 72 %
June 21.6 °C 10 mm 67 %
July 21.4 °C 10 mm 63 %
August 22.6 °C 8 mm 61 %
September 24.8 °C 8 mm 51 %
October 26.0 °C 36 mm 59 %
November 25.9 °C 104 mm 68 %
December 26.3 °C 109 mm 64 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.