September weather forecast and climate
Brazzaville, Congo

Beautiful orange flower petals in front of the National Library in Brazzaville, Congo, with a raised flag
Beautiful orange flower petals in front of the National Library in Brazzaville, Congo, with a raised flag

Temperature

In September, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 20°C (68°F).

Rainfall

In Brazzaville, during 5 rainfall days, 30mm (1.2") of precipitation is typically accumulated. Throughout the year, there are 111 rainfall days, and 1358mm (53.5") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12.1h.

Sunshine

Months with the least sunshine are January, June, July, September and December, with an average of 4h of sunshine.

UV index

January through April, August through December, with an average UV index of 12, are months with the highest UV index.

What is the temperature in September in Brazzaville?

In September, in Brazzaville, Congo, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 20°C (68°F).

How much does it rain in Brazzaville in September?

In Brazzaville, during September, the rain falls for 5 days and regularly aggregates up to 30mm (1.2") of precipitation.

What is the average length of the day in September in Brazzaville?

In Brazzaville, Congo, the average length of the day in September is 12.1h.

What is the month with the least sunshine in Brazzaville?

Months with the least sunshine are January, June, July, September and December, with an average of 4h of sunshine.

How long on average sun shines in September in Brazzaville?

The average sunshine in September is 4h.

When is the highest UV index in Brazzaville?

Months with the highest UV index are January through April, August through December, with an average UV index of 12.

What is the UV index reading in September in Brazzaville?

In Brazzaville, Congo, the average UV index in September is 12.
Average temperature in September - Brazzaville, Congo
  • Average high temperature in September: 31°C

Warmest months (with the highest average high temperature) are March and April (33°C).
The month with the lowest average high temperature is July (28°C).

  • Average low temperature in September: 20°C

The month with the highest average low temperature is April (22°C).
The coldest month (with the lowest average low temperature) is July (17°C).

Average rainfall in September - Brazzaville, Congo
  • Average rainfall in September: 30mm

The wettest month (with the highest rainfall) is November (222mm).
Driest months (with the lowest rainfall) are July and August (3mm).

Average rainfall days in September - Brazzaville, Congo
  • Average rainfall days in September: 5 days

Months with the highest number of rainy days are April and November (16 days).
The month with the lowest number of rainy days is July (0 days).

Average daylight in September / Average sunshine in September - Brazzaville, Congo
  • Average daylight in September: 12.1h

The month with the longest days is December (Average daylight: 12.4h).
Months with shortest days are May, June and July (Average daylight: 11.9h).

  • Average sunshine in September: 4h

Months with most sunshine are February, March, April, May, August, October and November (Average sunshine: 5h).
Months with least sunshine are January, June, July, September and December (Average sunshine: 4).

Average UV index in September - Brazzaville, Congo
  • Average UV index in September: 12

Months with the highest UV index are January, February, March, April, August, September, October, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 10).

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