Atsiaman climate

Name: Atsiaman
Address: GH

Atsiaman is warmest in February, with average highs of 32 °C, and coldest in August, when nights average 23 °C. June is the wettest month (162 mm) and January the driest (28 mm). Figures are 1991–2020 climate normals.

Across a full year Atsiaman averages 922 mm of rain and 363 days above 25 °C.

Ghana · population 202,932 · 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 February 32 °C
Coldest month August 23 °C
Driest month January 28 mm
Wettest month June 162 mm
Least cloud December 45 % cloud
Hottest on record February 38 °C
Coldest on record January 18 °C

What to expectAtsiaman through the year

Atsiaman has a clear annual cycle: average daily highs run from 27 °C in August to 32 °C in February, a swing of 3.5 °C in mean temperature across the year.

Counted across a normal year, 363 days a year reach 25 °C, 185 of them reach 30 °C. The warmest reading in the 1991–2020 record is 38 °C, in February.

Rain is strongly seasonal. June averages 162 mm against 28 mm in January — 5.8 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	32.1 °C	28 mm	50 %
February	32.4 °C	39 mm	58 %
March	32.2 °C	60 mm	66 %
April	31.8 °C	68 mm	72 %
May	30.3 °C	117 mm	77 %
June	28.3 °C	162 mm	80 %
July	27.4 °C	83 mm	81 %
August	27.3 °C	64 mm	83 %
September	28.1 °C	104 mm	79 %
October	29.1 °C	104 mm	68 %
November	30.2 °C	58 mm	53 %
December	31.2 °C	33 mm	45 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	32.1 °C	23.8 °C	27.2 °C	35.9 °C	17.6 °C	31	30
February	32.4 °C	24.8 °C	27.7 °C	38.2 °C	19.5 °C	28	27
March	32.2 °C	25.2 °C	27.9 °C	35.2 °C	21.1 °C	31	30
April	31.8 °C	25.1 °C	27.8 °C	36.3 °C	22.9 °C	30	28
May	30.3 °C	24.6 °C	26.9 °C	34.0 °C	22.3 °C	31	18
June	28.3 °C	23.6 °C	25.4 °C	32.1 °C	20.6 °C	30	2
July	27.4 °C	22.9 °C	24.6 °C	30.8 °C	20.1 °C	30	0
August	27.3 °C	22.6 °C	24.4 °C	31.0 °C	19.6 °C	30	0
September	28.1 °C	23.0 °C	24.9 °C	31.3 °C	21.2 °C	30	1
October	29.1 °C	23.5 °C	25.6 °C	31.9 °C	21.7 °C	31	5
November	30.2 °C	23.9 °C	26.5 °C	33.1 °C	21.2 °C	30	16
December	31.2 °C	24.0 °C	27.0 °C	34.3 °C	18.8 °C	31	27

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	28 mm	7	12 h/day	50 %	77 %	13 km/h
February	39 mm	10	12 h/day	58 %	78 %	14 km/h
March	60 mm	13	12 h/day	66 %	79 %	15 km/h
April	68 mm	14	12 h/day	72 %	80 %	14 km/h
May	117 mm	20	12 h/day	77 %	83 %	13 km/h
June	162 mm	22	12 h/day	80 %	86 %	13 km/h
July	83 mm	17	12 h/day	81 %	84 %	15 km/h
August	64 mm	16	12 h/day	83 %	84 %	15 km/h
September	104 mm	21	12 h/day	79 %	86 %	14 km/h
October	104 mm	20	12 h/day	68 %	85 %	12 km/h
November	58 mm	15	12 h/day	53 %	83 %	11 km/h
December	33 mm	8	12 h/day	45 %	80 %	12 km/h

How Atsiaman 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
Atsiaman	32 °C	23 °C	922 mm	363
Accra · Ghana	31 °C	23 °C	852 mm	363
Ashaiman · Ghana	32 °C	23 °C	637 mm	364
Koforidua · Ghana	33 °C	22 °C	1,341 mm	362
Cape Coast · Ghana	31 °C	23 °C	1,215 mm	361
Obuase · Ghana	33 °C	22 °C	1,211 mm	361

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

QuestionsCommon questions about Atsiaman’s climate

When is the best time to visit Atsiaman?

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, February is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Atsiaman get?

In February, the warmest month, daily highs average 32 °C. About 185 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °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 Atsiaman?

June, averaging 162 mm over 22 days with rain. The driest month is January with 28 mm. The year as a whole averages 922 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 Atsiaman 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
Data point: 5.698°, -0.328° (the coordinates the reanalysis values are taken for)
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.