September weather forecast
Kelle, Congo

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Weather in September

September, the gateway to Congo's second rainy season, contributes to a significant surge in rainfall, reaching 132mm (5.2"). Temperatures dip down slightly as cloud cover takes the larger chunk of daytime hours, minimizing actual sunshine. However, daylight, remaining at 12.1 hours, promises ample time for activities and societal functions. At this time the weather flips the switch, ushering in the resumption of the wet season.

Temperature

Kelle transitions into September recording an average high-temperature of a still hot 30.5°C (86.9°F), closely aligning with the preceding month's temperature. During September, Kelle records a consistent average nighttime temperature of 21.8°C (71.2°F).

Heat index

The heat index in September is computed to be a scorching 40°C (104°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In Kelle, Congo, the average relative humidity in September is 81%.

Rainfall

In Kelle, during September, the rain falls for 27.2 days and regularly aggregates up to 132mm (5.2") of precipitation. In Kelle, during the entire year, the rain falls for 270.9 days and collects up to 1169mm (46.02") of precipitation.

Daylight

The month with the shortest days is September, with an average of 12h and 6min of daylight.
On the first day of September, sunrise is at 05:58 and sunset at 18:05. On the last day of the month, sunrise is at 05:48 and sunset at 17:55 WAT.

Sunshine

In Kelle, the average sunshine in September is 7.9h.

UV index

The months with the lowest UV index are August through October, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Frequently asked questions

Is it hot during September?

In Kelle, 30.5°C (86.9°F) is the average high-temperature and 21.8°C (71.2°F) is the average low-temperature during September. In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 40°C (104°F).

What is the average humidity in September?

In Kelle, the average relative humidity in September is 81%.

How much does it rain in Kelle in September?

In Kelle, during September, the rain falls for 27.2 days and regularly aggregates up to 132mm (5.2") of precipitation.

What is the month with the shortest days?

September has the shortest days of the year, with an average of 12h and 6min of daylight.

What is the average length of the day in September?

In Kelle, the average day length in September is 12h and 7min.

When are sunrise and sunset in September in Kelle?

On the first day of September, sunrise is at 05:58 and sunset at 18:05. On the last day of the month, sunrise is at 05:48 and sunset at 17:55 WAT.

How long on average sun shines in September?

In Kelle, the average sunshine duration in September is 7.9h.

What are the months with the lowest UV index?

August through October, with an average maximum UV index of 6, are months with the lowest UV index.

What is the UV index reading in September?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Kelle, Congo

Average temperature in September - Kelle, Congo
  • Average high temperature in September: 30.5°C

The warmest month (with the highest average high temperature) is January (34.3°C).
The month with the lowest average high temperature is October (30.1°C).

  • Average low temperature in September: 21.8°C

The month with the highest average low temperature is February (23.1°C).
The coldest month (with the lowest average low temperature) is October (21.5°C).

Average pressure in September
Kelle, Congo

Average pressure in September - Kelle, Congo
  • Average pressure in September: 1011.8mbar

The month with the highest atmospheric pressure is July (1012.3mbar).
The month with the lowest atmospheric pressure is February (1009mbar).

Average wind speed in September
Kelle, Congo

Average wind speed in September - Kelle, Congo
  • Average wind speed in September: 5km/h

The windiest month (with the highest average wind speed) is August (5.4km/h).
The calmest month (with the lowest average wind speed) is November (4.1km/h).

Average humidity in September
Kelle, Congo

Average humidity in September - Kelle, Congo
  • Average humidity in September: 81%

The month with the highest relative humidity is October (85%).
The month with the lowest relative humidity is January (63%).

Average rainfall in September
Kelle, Congo

Average rainfall in September - Kelle, Congo
  • Average rainfall in September: 132mm

The wettest month (with the highest rainfall) is October (182mm).
The driest month (with the least rainfall) is January (33mm).

Average rainfall days in September
Kelle, Congo

Average rainfall days in September - Kelle, Congo
  • Average rainfall days in September: 27.2 days

The month with the highest number of rainy days is October (28.7 days).
The month with the least rainy days is January (14.2 days).

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

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

The month with the longest days is December (Average daylight: 12h and 6min).
The month with the shortest days is September (Average daylight: 12h and 6min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is October (Average sunshine: 7h and 12min).

Average sunshine days in September
Kelle, Congo

Average sunshine days in September - Kelle, Congo
  • Average sunshine days in September: 1.9 days

The month with the most sunshine days is January (14.6 days).
The month with the least sunshine days is October (1.5 days).

Average UV index in September
Kelle, Congo

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

The months with the highest UV index are January, February, March, April, May, June, July, November and December (UV index 7).
The months with the lowest UV index are August, September and October (UV index 6).

Average cloud cover in September
Kelle, Congo

Average cloud cover in September - Kelle, Congo
  • Average cloud cover in September: 45

The month with the most cloud cover is October (Cloud cover 53).
The month with the least cloud cover is January (Cloud cover 26).

Average visibility in September
Kelle, Congo

Average visibility in September - Kelle, Congo
  • Average visibility in September: 8km

The months with the highest visibility are January and July (10km).
The month with the lowest visibility is October (7km).

Kelle, Congo

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