September weather forecast
Diosso, Congo

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Weather in September

September in Diosso stands out for its marked climatic changes. The city continues to exhibit warm conditions, coupled with an increasingly humid atmosphere. The rainfall records a significant surge, ascending to 17mm (0.67"), thus marking the commencement of the wet season in Congo. While no drastic alterations are recorded in temperature dynamics, changes in natural elements, especially rainfall becomes prominent. Transitioning into October, the atmospheric moisture continues to spike.

Temperature

In September, the average high-temperature in Diosso registers at a still warm 25.7°C (78.3°F), nearly identical to August's 24.7°C (76.5°F). Diosso, during the September nights, maintains an average temperature of 22.4°C (72.3°F), closely aligned with its daytime readings.

Humidity

May through December, with an average relative humidity of 83%, are the most humid months in Diosso.

Rainfall

In September, the rain falls for 15.3 days. Throughout September, 17mm (0.67") of precipitation is accumulated. Throughout the year, in Diosso, there are 217.2 rainfall days, and 881mm (34.69") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 5min.
On the first day of the month, sunrise is at 06:11 and sunset at 18:13. On the last day of September, sunrise is at 05:58 and sunset at 18:06 WAT.

Sunshine

With an average of 5.8h of sunshine, September has the least sunshine of the year.

UV index

In Diosso, Congo, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 6 in September leads to these recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.

Frequently asked questions

What is the temperature in September in Diosso?

Diosso in September has an average high-temperature of 25.7°C (78.3°F) and an average low-temperature of 22.4°C (72.3°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in May is evaluated at 35°C (95°F).

What are the most humid months in Diosso?

The months with the highest humidity are May through December, with an average relative humidity of 83%.

What is the average humidity in September in Diosso?

The average relative humidity in September is 83%.

How much does it rain in Diosso in September?

In September, in Diosso, Congo, the rain falls for 15.3 days. Throughout September, 17mm (0.67") of precipitation is accumulated.

How many hours of daylight does Diosso have in September?

In September, the average day length is 12h and 5min.

When are sunrise and sunset in September in Diosso?

In September, on the first day of the month, sunrise is at 06:11 and sunset at 18:13. On the last day of the month, in Diosso, Congo, sunrise is at 05:58 and sunset at 18:06 WAT.

What is the month with the least sunshine in Diosso?

With an average of 5.8h of sunshine, September has the least sunshine of the year.

How many hours of sunshine does Diosso have in September?

In Diosso, the average sunshine duration in September is 5.8h.

How high is the UV index in September in Diosso?

In September, the average daily maximum UV index in Diosso is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.

Average temperature in September
Diosso, Congo

Average temperature in September - Diosso, Congo
  • Average high temperature in September: 25.7°C

The warmest month (with the highest average high temperature) is March (30.2°C).
The month with the lowest average high temperature is August (24.7°C).

  • Average low temperature in September: 22.4°C

The month with the highest average low temperature is March (26°C).
The coldest month (with the lowest average low temperature) is July (20.8°C).

Average pressure in September
Diosso, Congo

Average pressure in September - Diosso, Congo
  • Average pressure in September: 1013.3mbar

The month with the highest atmospheric pressure is July (1014.5mbar).
The month with the lowest atmospheric pressure is February (1009.9mbar).

Average wind speed in September
Diosso, Congo

Average wind speed in September - Diosso, Congo
  • Average wind speed in September: 10.5km/h

The windiest month (with the highest average wind speed) is October (11.4km/h).
The calmest month (with the lowest average wind speed) is January (8.7km/h).

Average humidity in September
Diosso, Congo

Average humidity in September - Diosso, Congo
  • Average humidity in September: 83%

The months with the highest relative humidity are May, June, July, August, September, October, November and December (83%).
The month with the lowest relative humidity is March (80%).

Average rainfall in September
Diosso, Congo

Average rainfall in September - Diosso, Congo
  • Average rainfall in September: 17mm

The wettest month (with the highest rainfall) is December (159mm).
The driest month (with the least rainfall) is July (2mm).

Average rainfall days in September
Diosso, Congo

Average rainfall days in September - Diosso, Congo
  • Average rainfall days in September: 15.3 days

The month with the highest number of rainy days is December (25.8 days).
The month with the least rainy days is June (5.1 days).

Average daylight in September /
Average sunshine in September
Diosso, Congo

Average daylight in September / Average sunshine in September - Diosso, Congo
  • Average daylight in September: 12h and 1min

The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 54min).

  • Average sunshine in September: 5h and 5min

The months with the most sunshine are April, May and December (Average sunshine: 8h and 12min).
The month with the least sunshine is September (Average sunshine: 5h and 48min).

Average sunshine days in September
Diosso, Congo

Average sunshine days in September - Diosso, Congo
  • Average sunshine days in September: 9.1 days

The month with the most sunshine days is July (22.4 days).
The month with the least sunshine days is November (2.6 days).

Average UV index in September
Diosso, Congo

Average UV index in September - Diosso, Congo
  • Average UV index in September: 6

The months with the highest UV index are January, February, March, April, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 5).

Average cloud cover in September
Diosso, Congo

Average cloud cover in September - Diosso, Congo
  • Average cloud cover in September: 62

The month with the most cloud cover is October (Cloud cover 66).
The month with the least cloud cover is May (Cloud cover 40).

Average visibility in September
Diosso, Congo

Average visibility in September - Diosso, Congo
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Diosso, Congo

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