September weather forecast and climate
Banjul, The Gambia GM

• Average high temperature in September: 31°C

The warmest month (with the highest average high temperature) is March (34°C).
The month with the lowest average high temperature is August (29°C).

• Average low temperature in September: 23°C

Months with the highest average low temperature are June, July, August and September (23°C).
The coldest month (with the lowest average low temperature) is January (15°C).

• Average humidity in September: 84%

The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is February (46%).

• Average rainfall in September: 310mm

The wettest month (with the highest rainfall) is August (500mm).
Driest months (with the lowest rainfall) are March and April (0mm).

• Average rainfall days in September: 19 days

Months with the highest number of rainy days are August and September (19 days).
Months with the lowest number of rainy days are January, February, March and April (0 days).

• Average sea temperature in September: 28°C

Best months for swimming (with the highest average sea temperature) are July, August, September, October and November (28°C).
Coldest months (with the lowest average sea temperature) are February and March (21°C).

• Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 12.9h).
The month with shortest days is December (Average daylight: 11.3h).

• Average sunshine in September: 6h

The month with most sunshine is February (Average sunshine: 10.1h).
Months with least sunshine are July, August and September (Average sunshine: 6).

• Average UV index in September: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).