September weather forecast
Mapaki, Sierra Leone

September signals a gradual easing out of the monsoon with a marked decrease in rainfall. Monsoon-loaded months yield to relatively calmer days with the onset of the post-monsoon season. A slower pace in October characterizes a welcoming transition after a long, moist trail of the rainy season. Exception to the typical trend of monsoon months, September registers a drop in average rainfall to 261mm (10.28"). Characterized by receding rains, a teensy uptick in sunshine, and a sustained tropical vibe, September carries Mapaki towards drier days.

Temperature

During September, Mapaki observes a subtle ascent to a still moderately hot 28.9°C (84°F) from August's 27.6°C (81.7°F) in the average high-temperature. Mapaki cools down to an average low-temperature of 21.8°C (71.2°F) throughout the month of September.

Heat index

For September, the heat index is calculated to be a very hot 37°C (98.6°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. 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. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Mapaki, the average relative humidity in September is 92%.

Rainfall

In September, the rain falls for 28.6 days. Throughout September, 261mm (10.28") of precipitation is accumulated. Throughout the year, there are 225.8 rainfall days, and 1471mm (57.91") of precipitation is accumulated.

Daylight

In Mapaki, Sierra Leone, the average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 06:39 and sunset at 18:55. On the last day of September, sunrise is at 06:35 and sunset at 18:38 GMT.

Sunshine

In Mapaki, the average sunshine in September is 5.2h.

UV index

In Mapaki, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, an average UV index of 6 transforms into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.