Weather in Kumasi

Kumasi is in Ghana at 6.7°N. The 2001–2020 NASA POWER daily record describes a monsoon climate with a sharp wet-dry split. February is the warmest month (average 28.5°C, high 34.4°C) and July is the coolest (average 24.6°C, low 21.1°C).

Rain is the monsoon runs from March to July, inside an annual total of 1442 mm. The wettest month is October at 233 mm; the driest is January at 18 mm. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are January, August, and December.

When the score favours a visit

The three months with the highest comfort score are January, August, and December: January (26.9°C average, 18 mm, 62% humidity); August (24.8°C average, 83 mm, 86% humidity); December (26.0°C average, 21 mm, 73% humidity). Those months sit across the year end, so they are listed in season order rather than January-to-December. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the monsoon itself — fewer crowds, greener landscape, heavier rain — aim at March–July instead of the score.

Temperature through the year

The heat peaks in February, when the typical afternoon is 34.4°C. The opposite pole is July, when mornings average 21.1°C.

Across the year the mean afternoon high is 30.6°C. If you want the smallest day–night shock, look at months where the high and low sit close together; February nights still hold 22.7°C.

Monsoon and dry months

The monsoon in Kumasi starts in March and ends in July (March, April, May, June, and July). October is the core of it at 233 mm. January is the other extreme, with 18 mm.

Humidity peaks near 89%. That usually lines up with the wetter months rather than the hottest ones.

What stands out month by month

January is the driest month, averaging only 18 mm across 5 rainy days. Highs sit near 33.4°C. Peak heat arrives in February: 34.4°C by day, 22.7°C at night, and 66% humidity. The monsoon opens in March. Expect 116 mm and 24 rainy days, with nights around 23.3°C. By July the monsoon is ending. Kumasi still sees about 139 mm, but the next month is usually leaner. In August, Kumasi averages 28.8°C by day and 20.8°C at night, with 83 mm of rain.

September: 29.1°C high, 21.6°C low, 171 mm rain, 86% humidity. October is the wettest month — 233 mm and 30 rainy days, with 87% humidity. November stands apart from the months beside it: 30.0°C / 21.8°C and 93 mm. December: 31.3°C high, 20.7°C low, 21 mm rain, 73% humidity.

Kumasi and other cities in Ghana

Accra is about 202 km away: Kumasi is about as warm as Accra at the hot peak and 275 mm wetter over the year than Accra. Accra’s wettest month is June (197 mm) versus October here.