Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Kumasi, Ghana

September in Kumasi, Ghana, resumes the second half of the monsoon as the precipitation registers an increase to 165.1mm (6.5"). Cloudy skies rule the roost with the sunlight limited to only 3.5 hours during the day.
The average temperatures are in the range of 21.1°C (70°F) to 28.9°C (84°F) as the days warm up with an increase in humidity. Winds typically blow from the southwest with speeds that rarely cross more than 15 miles per hour.
Expect scattered thunderstorms in September. Light summer clothing with a rain jacket or an umbrella protects from the rain. High relative humidity makes the conditions uncomfortable in September in Kumasi.
  • Average high temperature in September: 28.7°C

The warmest month (with the highest average high temperature) is February (33.5°C).
The month with the lowest average high temperature is August (27.7°C).

  • Average low temperature in September: 21.1°C

The month with the highest average low temperature is April (22.4°C).
The coldest month (with the lowest average low temperature) is January (20.4°C).

  • Average rainfall in September: 165.2mm

The wettest month (with the highest rainfall) is June (214.3mm).
The driest month (with the lowest rainfall) is January (15.1mm).

  • Average rainfall days in September: 17 days

Months with the highest number of rainy days are June, September and October (17 days).
The month with the lowest number of rainy days is January (2 days).

  • Average daylight in September: 12h

The month with the longest days is June (Average daylight: 13h).
Months with shortest days are January, February, March, April, May, July, August, September, October, November and December (Average daylight: 12h).

  • Average sunshine in September: 3.5h

The month with most sunshine is April (Average sunshine: 6.8h).
The month with least sunshine is August (Average sunshine: 2.5h).

  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).