September weather forecastBumbuna, Sierra Leone

Weather in September

September, the first month of the autumn in Bumbuna, is still a warm month, with an average temperature fluctuating between 28.9°C (84°F) and 21.8°C (71.2°F).

Temperature

The average high-temperature for September is a still moderately hot 28.9°C (84°F), closely aligning with the temperature of the preceding month. Throughout the September nights, Bumbuna encounters a low-temperature of 21.8°C (71.2°F).

Heat index

The heat index in September is estimated at a sweltering 37°C (98.6°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Understanding the heat index involves considering values for shaded locales with light wind. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In September, the average relative humidity is 92%.

Rainfall

In Bumbuna, in September, during 28.6 rainfall days, 261mm (10.28") of precipitation is typically accumulated. In Bumbuna, during the entire year, the rain falls for 225.8 days and collects up to 1471mm (57.91") of precipitation.

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of September, sunrise is at 06:38 and sunset at 18:55. On the last day of the month, sunrise is at 06:35 and sunset at 18:38 GMT.

Sunshine

In September, the average sunshine is 5.2h.

UV index

The average daily maximum UV index in September in Bumbuna is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high UV index of 6 in September translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.