September weather forecast
Kololi, The Gambia

Weather in September

September, the first month of the autumn in Kololi, is still a warm month, with temperature in the range of an average high of 29.3°C (84.7°F) and an average low of 26.4°C (79.5°F).

Temperature

In Kololi, the average high-temperature in September is essentially the same as in August - a still warm 29.3°C (84.7°F). In September, in Kololi, the average low-temperature is 26.4°C (79.5°F).

Heat index

The average heat index in September is estimated at a sweltering 35.6°C (96.1°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like pregnancy, clothing, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The months with the highest humidity are August and September, with an average relative humidity of 80%.

Rainfall

In Kololi, during 18.3 rainfall days, 124mm (4.88") of precipitation is typically accumulated. In Kololi, during the entire year, the rain falls for 79.4 days and collects up to 438mm (17.24") of precipitation.

Sea temperature

July through November, with an average sea temperature of 28°C (82.4°F), are months with the warmest seawater in Kololi.
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In September, the average length of the day in Kololi is 12h and 12min.
On the first day of September, sunrise is at 06:55 and sunset at 19:18. On the last day of the month, sunrise is at 06:56 and sunset at 18:57 GMT.

Sunshine

In September, the average sunshine in Kololi is 8.3h.

UV index

January, May through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in September transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in September in Kololi?

The average high-temperature, in September, is 29.3°C (84.7°F), while the average low-temperature is 26.4°C (79.5°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 35.6°C (96.1°F).

What are the most humid months in Kololi?

August and September, with an average relative humidity of 80%, are most humid months in Kololi, The Gambia.

What is the average humidity in September in Kololi?

In September, the average relative humidity in Kololi, The Gambia, is 80%.

How much does it rain in Kololi in September?

In Kololi, The Gambia, during September, the rain falls for 18.3 days and regularly aggregates up to 124mm (4.88") of precipitation.

What are the months with the warmest sea water in Kololi?

July through November, with an average sea temperature of 28°C (82.4°F), are months with the warmest seawater in Kololi, The Gambia.

How warm is the water in September in Kololi?

In Kololi, the average seawater temperature in September is 28°C (82.4°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

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

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

What time are sunrise and sunset in September in Kololi?

On the first day of September, sunrise is at 06:55 and sunset at 19:18. On the last day of the month, sunrise is at 06:56 and sunset at 18:57 GMT.

How many hours of sunshine does Kololi have in September?

In Kololi, The Gambia, the average sunshine duration in September is 8.3h.

What are the months with the highest UV index in Kololi?

The months with the highest UV index in Kololi are January, May through December, with an average maximum UV index of 7.

What is the UV index intensity in September in Kololi?

In Kololi, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.

Average temperature in September
Kololi, The Gambia

Average temperature in September - Kololi, The Gambia
  • Average high temperature in September: 29.3°C

The warmest month (with the highest average high temperature) is November (31.5°C).
The month with the lowest average high temperature is May (27.4°C).

  • Average low temperature in September: 26.4°C

The month with the highest average low temperature is October (27.1°C).
The coldest month (with the lowest average low temperature) is February (21.7°C).

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Average pressure in September
Kololi, The Gambia

Average pressure in September - Kololi, The Gambia
  • Average pressure in September: 1012mbar

The month with the highest atmospheric pressure is July (1012.6mbar).
The month with the lowest atmospheric pressure is April (1010.4mbar).

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Average wind speed in September
Kololi, The Gambia

Average wind speed in September - Kololi, The Gambia
  • Average wind speed in September: 13.2km/h

The windiest month (with the highest average wind speed) is February (19.3km/h).
The calmest month (with the lowest average wind speed) is September (13.2km/h).

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Average humidity in September
Kololi, The Gambia

Average humidity in September - Kololi, The Gambia
  • Average humidity in September: 80%

The months with the highest relative humidity are August and September (80%).
The month with the lowest relative humidity is January (41%).

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Average rainfall in September
Kololi, The Gambia

Average rainfall in September - Kololi, The Gambia
  • Average rainfall in September: 124mm

The wettest month (with the highest rainfall) is August (185mm).
The driest months (with the least rainfall) are January, February and December (0mm).

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Average rainfall days in September
Kololi, The Gambia

Average rainfall days in September - Kololi, The Gambia
  • Average rainfall days in September: 18.3 days

The month with the highest number of rainy days is August (22.6 days).
The months with the least rainy days are January and February (0.2 days).

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Average sea temperature in September
Kololi, The Gambia

Average sea temperature in September - Kololi, The Gambia
  • Average sea temperature in September: 28°C

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

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Average daylight in September /
Average sunshine in September
Kololi, The Gambia

Average daylight in September / Average sunshine in September - Kololi, The Gambia
  • Average daylight in September: 12h and 12min

The month with the longest days is June (Average daylight: 12h and 55min).
The month with the shortest days is December (Average daylight: 11h and 21min).

  • Average sunshine in September: 8h and 18min

The months with the most sunshine are March, April and May (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 7h and 18min).

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Average sunshine days in September
Kololi, The Gambia

Average sunshine days in September - Kololi, The Gambia
  • Average sunshine days in September: 9.5 days

The month with the most sunshine days is January (30.8 days).
The month with the least sunshine days is August (5.5 days).

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Average UV index in September
Kololi, The Gambia

Average UV index in September - Kololi, The Gambia
  • Average UV index in September: 7

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

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Average cloud cover in September
Kololi, The Gambia

Average cloud cover in September - Kololi, The Gambia
  • Average cloud cover in September: 37

The month with the most cloud cover is August (Cloud cover 49).
The month with the least cloud cover is April (Cloud cover 6).

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Average visibility in September
Kololi, The Gambia

Average visibility in September - Kololi, The Gambia
  • 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).

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