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 in August to 124mm 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

The onset of September in Kololi, The Gambia, brings with it an average high-temperature of a still moderately hot 29.3°C, showing a negligible variation from the month before. Kololi's nighttime average temperature in September drops marginally from the daytime highs, settling at a still moderately hot 26.4°C.

Heat index

During September, the heat index is computed to be a torrid 36°C. Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

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

Rainfall

In Kololi, in September, it is raining for 18.3 days, with typically 124mm of accumulated precipitation. In Kololi, The Gambia, during the entire year, the rain falls for 79.4 days and collects up to 438mm of precipitation.

Sea temperature

July through November, with an average sea temperature of 28°C, are months with the warmest seawater in Kololi.
Note: For swimming, diving, or other water activities, temperatures from 25°C to 29°C provide the most enjoyable experience for extended periods without discomfort.

Daylight

The average length of the day in September 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 Kololi, the average sunshine in September is 8.3h.

UV index

January, May through December, with an average maximum UV index of 7, are months with the highest UV index in Kololi. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Caution! The mirror effect of sand and water ups the UV radiation strength.