September weather forecast
Bwiam, The Gambia

In September, the climate in Bwiam, The Gambia starts to gradually shift from the heavy monsoon-influenced conditions. With a rainfall of 115mm (4.53"), it is still a rainy month though the volume decreases compared to August. Daylight hours reduce further down to 12.2 hours, ushering in shorter days. The winds, calm during the peak rainy months, begin to slightly intensify. Despite being a relatively rainy month, September sees the liveliness of the city returning after the heavy monsoon.

Temperature

Bwiam's average high-temperature in September is a still tropical 32°C (89.6°F), marking an insignificant difference from the 31.5°C (88.7°F) of August. The low-temperature averages to a warm 24.6°C (76.3°F) during the nights of September.

Heat index

The heat index in September is evaluated at a blistering 44°C (111.2°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

September is the most humid month in Bwiam, with an average relative humidity of 80%.

Rainfall

In Bwiam, The Gambia, during September, the rain falls for 20 days and regularly aggregates up to 115mm (4.53") of precipitation. Throughout the year, in Bwiam, there are 84.2 rainfall days, and 453mm (17.83") of precipitation is accumulated.

Daylight

In Bwiam, the average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 06:53 and sunset at 19:15. On the last day of September, sunrise is at 06:53 and sunset at 18:54 GMT.

Sunshine

In Bwiam, the average sunshine in September is 8.1h.

UV index

January through March, June through December, with an average maximum UV index of 7, are months with the lowest UV index in Bwiam, The Gambia. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.