Monthly Climate
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Best time to visit Koumassi

August is the best time to visit Koumassi for general sightseeing, with average highs of 26 °C and about 20 wet days. The comfortable season runs roughly May to November.

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 59/100
A beach holiday October sea 26 °C
The least cloud January 53 % average cloud cover
The least rain January 81 mm
Warmth March 29 °C
Cooler weather August 26 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 August 59 26 °C 20 73
2 July 58 26 °C 23 74
3 September 57 26 °C 25 74
4 June 55 27 °C 27 74
5 January 54 29 °C 16 72
6 October 54 27 °C 29 75
7 November 51 28 °C 27 72
8 May 50 28 °C 28 71
9 December 49 29 °C 22 71
10 February 48 29 °C 19 72
11 April 47 29 °C 24 70
12 March 46 29 °C 23 71

For a beach holiday

October scores highest, with a sea temperature of 26 °C and air temperatures around 27 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 27 °C 29 °C 53 % 72
February 27 °C 29 °C 59 % 72
March 28 °C 29 °C 70 % 71
April 28 °C 29 °C 76 % 70
May 28 °C 28 °C 82 % 71
June 27 °C 27 °C 81 % 74
July 25 °C 26 °C 79 % 74
August 24 °C 26 °C 81 % 73
September 24 °C 26 °C 78 % 74
October 26 °C 27 °C 72 % 75
November 28 °C 28 °C 64 % 72
December 28 °C 29 °C 54 % 71

When to think twice

March scores lowest with about 23 wet days and highs near 29 °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 29.2 °C 81 mm 53 %
February 29.4 °C 98 mm 59 %
March 29.5 °C 138 mm 70 %
April 29.3 °C 148 mm 76 %
May 28.4 °C 225 mm 82 %
June 27.1 °C 247 mm 81 %
July 26.2 °C 143 mm 79 %
August 25.8 °C 82 mm 81 %
September 26.3 °C 141 mm 78 %
October 27.3 °C 182 mm 72 %
November 28.3 °C 154 mm 64 %
December 28.8 °C 109 mm 54 %

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.