September weather forecast
Kololi, The Gambia

September's weather in Kololi brings about a drastic drop in rainfall, marking the end of the monsoon. A significant reduction from 185mm (7.28") in August to 124mm (4.88") helps the city smoothly transition from the rainy season to drier climate conditions. Temperature and humidity start taking a back seat, allowing the city to breathe under clearer skies, longer sunshine hours, and mild winds. This adjustment from a wetter climate creates a pleasant, balmy atmosphere for residents and tourists alike. As the month progresses towards October, the city prepares for reduced rainfall and a more stable weather.

Temperature

Kololi, The Gambia, starts September with an average high-temperature of a still moderately hot 29.3°C (84.7°F), hinting at a minimal fluctuation from August. September nights reflect a consistent temperature dip to a still warm 26.4°C (79.5°F), a slight descent from daytime peaks.

Heat index

During September, the heat index is calculated to be a torrid 36°C (96.8°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

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

Rainfall

In Kololi, during September, the rain falls for 18.3 days and regularly aggregates up to 124mm (4.88") of precipitation. Throughout the year, in Kololi, The Gambia, there are 79.4 rainfall days, and 438mm (17.24") of precipitation is accumulated.

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 various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

The average length of the day in September in Kololi is 12h and 12min.
On the first day of September in Kololi, sunrise is at 06:55 and sunset at 19:17. On the last day of the month, sunrise is at 06:56 and sunset at 18:57 GMT.

Sunshine

In September, the average sunshine is 8.3h.

UV index

The months with the highest UV index in Kololi are January, May through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 7 during September translates into these guidelines:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take caution! The UV rays from the Sun gain strength from sand and water reflections.