September weather forecast
Sierra Leone

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Flag of Sierra Leone

Weather in September

September signifies the beginning of the end of the rainy season in Sierra Leone. Although the rainfall remains considerable, with precipitation levels typically falling between 300mm (11.81") and 400mm (15.75"), it marks a significant reduction from the peak levels observed in July and August. The frequency of rain showers begins to decrease, yet heavy downpours can still occur, predominantly during the late afternoon and evening.

Temperature ranges in September remain consistently warm, fluctuating between 23°C (73.4°F) to 31°C (87.8°F) across the country. Coastal regions, including the capital city of Freetown, maintain these temperatures along with high humidity levels. In the central and eastern regions of Sierra Leone, similar daytime temperatures persist, while the nights may be slightly cooler owing to the higher altitudes.

Compared to August, September experiences a decrease in rainfall, indicating the gradual transition from the peak of the rainy season towards the drier months. This trend continues into October, which sees further reductions in precipitation levels.

The decreased rainfall in September results in more manageable travel conditions compared to the previous months. Despite the rainfall, the country continues to display lush greenery, a testament to the recent rainy season. For travellers undeterred by some residual rain showers, September can offer a balance between witnessing the vibrant landscapes and enjoying improved travel conditions. Nevertheless, visitors are advised to remain prepared for occasional heavy showers and the high humidity levels that persist during this month.

  • Freetown - September »
    January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index in Freetown, Sierra Leone. January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index in Freetown, Sierra Leone.
  • Koidu - September »
    On the first day of September in Koidu sunrise is at 06:35 and sunset at 18:52. Koidu records an average high-temperature of a still warm 27.5°C (81.5°F) in September, maintaining a close correlation with August's 26.1°C (79°F).
  • Makeni - September »
    In September, the average heat index, which takes the relative humidity and factors it into the air temperature reading, is calculated to be 37°C (98.6°F). The average relative humidity in September in Makeni is 92%.
  • Waterloo - September »
    In Waterloo, in September, during 28.6 rainfall days, 220mm (8.66") of precipitation is typically accumulated. In Waterloo, in September, it is raining for 28.6 days, with typically 220mm (8.66") of accumulated precipitation.
  • Kabala - September »
    In Kabala during September, the rain falls for 28.8 days and regularly aggregates up to 206mm (8.11") of precipitation. On the first day of September in Kabala, Sierra Leone, sunrise is at 06:37 and sunset at 18:54.
  • Kambia - September »
    The months with the highest UV index in Kambia, Sierra Leone, are January through June, September through December, with an average maximum UV index of 7. On the first day of September in Kambia, sunrise is at 06:42 and sunset at 19:00.
  • Magburaka - September »
    In Magburaka, in September, during 28.6 rainfall days, 261mm (10.28") of precipitation is typically accumulated. In September, the average heat index, which represents the influence of relative humidity on air temperature, is estimated at 37°C (98.6°F).
  • Moyamba - September »
    The months with the highest humidity in Moyamba are August and September, with an average relative humidity of 92%. August and September, with an average relative humidity of 92%, are the most humid months in Moyamba.
  • Kailahun - September »
    In Kailahun, during September, the rain falls for 30 days and regularly aggregates up to 297mm (11.69") of precipitation. On the first day of September in Kailahun, sunrise is at 06:33 and sunset at 18:50.
  • Bonthe - September »
    In September, in Bonthe the rain falls for 24 days. The month of September inaugurates a noticeable shift towards drier times for Bonthe, Sierra Leone.
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