September weather forecast
Gabu, Guinea-Bissau

The first month of the autumn, September, is still a hot month in Gabu, Guinea-Bissau, with an average temperature varying between 22°C (71.6°F) and 31°C (87.8°F).

Temperature

In September, the average high-temperature is essentially the same as in August - a still hot 31°C (87.8°F). The average low-temperature, in September, is 22°C (71.6°F).

Rainfall

In September, the rain falls for 17 days. Throughout September, 343mm (13.5") of precipitation is accumulated. In Gabu, during the entire year, the rain falls for 80 days and collects up to 1426mm (56.14") of precipitation.

Daylight

In September, the average length of the day in Gabu, Guinea-Bissau, is 12h and 11min.
On the first day of the month, sunrise is at 06:46 and sunset at 19:07. On the last day of September, sunrise is at 06:45 and sunset at 18:48 GMT.

Sunshine

The average sunshine in September is 6h.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index in Gabu. A UV Index reading of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 12 in September transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.