September weather forecast
Barra, The Gambia

September in Barra marks the subsiding of the heavy monsoon and the onset of the post-monsoon period. Rainfall decreases further to 31mm (1.22") from 121mm (4.76"), indicating a shift towards the dry period. Furthermore, while the temperature shoots up to a maximum of 29.5°C (85.1°F), the wind speed lessens to 12.8km/h (8mph). A significant decrease in cloud cover compared to August allows more sunshine to reach the ground. Weather during September thus initiates the drying process post monsoon season.

Temperature

Barra marks the onset of September with an average high-temperature of a still moderately hot 29.5°C (85.1°F), subtly divergent from August's 29.1°C (84.4°F). September nights witness a mild cool down to an average low of 26.1°C (79°F).

Heat index

The heat index in September is appraised at a fiery hot 36°C (96.8°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

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

Rainfall

In Barra, The Gambia, in September, it is raining for 17.6 days, with typically 121mm (4.76") of accumulated precipitation. In Barra, during the entire year, the rain falls for 77 days and collects up to 427mm (16.81") of precipitation.

Daylight

The average length of the day in September is 12h and 12min.
On the first day of September, sunrise is at 06:54 and sunset at 19:17. On the last day of the month, sunrise is at 06:55 and sunset at 18:56 GMT.

Sunshine

In September, the average sunshine is 8.2h.

UV index

The months with the highest UV index are January, April through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 7 in September translates into these instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.