Koumassi climate

Name: Koumassi
Address: CI

Koumassi is warmest in March, with average highs of 29 °C, and coldest in August, when nights average 23 °C. June is the wettest month (247 mm) and January the driest (81 mm). Figures are 1991–2020 climate normals.

Across a full year Koumassi averages 1,747 mm of rain and 357 days above 25 °C.

Ivory Coast · population 412,282 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month March 29 °C
Coldest month August 23 °C
Driest month January 81 mm
Wettest month June 247 mm
Least cloud January 53 % cloud
Hottest on record January 34 °C
Coldest on record August 20 °C
Warmest sea April 28 °C

What to expectKoumassi through the year

Koumassi has a clear annual cycle: average daily highs run from 26 °C in August to 29 °C in March, a swing of 3.1 °C in mean temperature across the year.

Counted across a normal year, 357 days a year reach 25 °C, 29 of them reach 30 °C. The warmest reading in the 1991–2020 record is 34 °C, in January.

Rain is strongly seasonal. June averages 247 mm against 81 mm in January — 3.0 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Koumassi is warmest in April at 28 °C and coldest in August at 24 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

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 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	29.2 °C	24.9 °C	26.8 °C	34.3 °C	20.1 °C	31	7
February	29.4 °C	25.5 °C	27.1 °C	33.6 °C	21.2 °C	28	7
March	29.5 °C	25.7 °C	27.3 °C	31.5 °C	22.9 °C	31	6
April	29.3 °C	25.5 °C	27.2 °C	31.5 °C	23.6 °C	30	5
May	28.4 °C	25.0 °C	26.5 °C	31.5 °C	23.1 °C	31	1
June	27.1 °C	24.1 °C	25.4 °C	29.4 °C	22.6 °C	30	0
July	26.2 °C	23.5 °C	24.6 °C	28.0 °C	21.7 °C	29	0
August	25.8 °C	23.1 °C	24.2 °C	27.6 °C	19.9 °C	27	0
September	26.3 °C	23.4 °C	24.5 °C	28.1 °C	21.8 °C	29	0
October	27.3 °C	23.9 °C	25.4 °C	29.7 °C	22.5 °C	31	0
November	28.3 °C	24.5 °C	26.2 °C	30.1 °C	22.6 °C	30	0
December	28.8 °C	25.0 °C	26.6 °C	31.5 °C	22.6 °C	31	2

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	81 mm	16	12 h/day	53 %	82 %	11 km/h	27.3 °C
February	98 mm	19	12 h/day	59 %	84 %	12 km/h	27.4 °C
March	138 mm	23	12 h/day	70 %	84 %	12 km/h	27.9 °C
April	148 mm	24	12 h/day	76 %	84 %	12 km/h	28.4 °C
May	225 mm	28	12 h/day	82 %	86 %	11 km/h	28.4 °C
June	247 mm	27	12 h/day	81 %	86 %	12 km/h	27.0 °C
July	143 mm	23	12 h/day	79 %	85 %	13 km/h	25.0 °C
August	82 mm	20	12 h/day	81 %	87 %	14 km/h	23.9 °C
September	141 mm	25	12 h/day	78 %	89 %	13 km/h	24.4 °C
October	182 mm	29	12 h/day	72 %	87 %	11 km/h	26.2 °C
November	154 mm	27	12 h/day	64 %	86 %	9.5 km/h	28.1 °C
December	109 mm	22	12 h/day	54 %	84 %	9.3 km/h	28.2 °C

How Koumassi compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Koumassi	29 °C	23 °C	1,747 mm	357
Abidjan · Ivory Coast	30 °C	22 °C	1,852 mm	360
Yamoussoukro · Ivory Coast	34 °C	22 °C	1,043 mm	362
Gagnoa · Ivory Coast	32 °C	22 °C	1,153 mm	361
Takoradi · Ghana	30 °C	23 °C	1,263 mm	361
Sekondi · Ghana	30 °C	23 °C	1,194 mm	359

Where Koumassi ranks

Ranking	Position	Value
Warmest sea temperatures in Africa in December	24thof 50	28 °C
Warmest sea temperatures in Africa in May	24thof 50	28 °C
Warmest sea temperatures in Africa in November	26thof 50	28 °C
Warmest sea temperatures in Africa in April	28thof 50	28 °C
Warmest sea temperatures in Africa in June	29thof 50	27 °C
Warmest sea temperatures in Africa in January	40thof 50	27 °C

Planning a trip? See the best time to visit Koumassi.

QuestionsCommon questions about Koumassi’s climate

When is the best time to visit Koumassi?

That depends on what you want, so the honest answer is a comparison rather than a single month. July, August, September sit closest to 20 °C on average, March is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Koumassi get?

In March, the warmest month, daily highs average 29 °C. About 29 days a year pass 30 °C. The highest value in the 1991–2020 record is 34 °C.

How cold does it get in winter?

Nights average 23 °C in August, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Koumassi?

June, averaging 247 mm over 27 days with rain. The driest month is January with 81 mm. The year as a whole averages 1,747 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Koumassi rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. 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.