September weather forecast
Moyamba, Sierra Leone

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Weather in September

Moyamba in September starts revealing the end of the rainy season. The temperatures slightly begin to rise while the rainfall reduces gradually. The lengthy daylight hours persist while wind speeds slightly descend. The humidity levels remain significantly high although not as pronounced as in the peak rainy season. Importantly, September records a significant dip in rainfall to 247mm (9.72"), signaling the fading wet season.

Temperature

As Moyamba steps into September, the average high-temperature holds at a still moderately hot 28.8°C (83.8°F), hinting at a minor fluctuation from the prior month. An average temperature of 22.1°C (71.8°F) is recorded during the nights in September.

Heat index

The heat index value for September is calculated to be a sweltering 37°C (98.6°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

August and September, with an average relative humidity of 92%, are the most humid months.

Rainfall

In Moyamba, in September, during 28.7 rainfall days, 247mm (9.72") of precipitation is typically accumulated. Throughout the year, there are 249.6 rainfall days, and 1612mm (63.46") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of September, sunrise is at 06:41 and sunset at 18:57. On the last day of the month, sunrise is at 06:37 and sunset at 18:41 GMT.

Sunshine

In Moyamba, the average sunshine in September is 4.8h.

UV index

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

How hot does it get in Moyamba in September?

During September, Moyamba experiences an average high-temperature of 28.8°C (83.8°F) and a low-temperature of 22.1°C (71.8°F). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 37°C (98.6°F).

What is the most humid month?

The months with the highest humidity are August and September, with an average relative humidity of 92%.

What is the average humidity in September?

The average relative humidity in September in Moyamba is 92%.

How much does it rain in September?

In Moyamba, during September, the rain falls for 28.7 days and regularly aggregates up to 247mm (9.72") of precipitation.

What is the average length of the day in September in Moyamba?

In Moyamba, the average day length in September is 12h and 10min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 06:41 and sunset at 18:57. On the last day of the month, sunrise is at 06:37 and sunset at 18:41 GMT.

How long on average sun shines in September?

In Moyamba, the average sunshine duration in September is 4.8h.

What is the UV index reading in September?

In Moyamba, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Moyamba, Sierra Leone

Average temperature in September - Moyamba, Sierra Leone
  • Average high temperature in September: 28.8°C

The warmest month (with the highest average high temperature) is February (37.4°C).
The month with the lowest average high temperature is August (27.5°C).

  • Average low temperature in September: 22.1°C

The month with the highest average low temperature is April (24°C).
The coldest month (with the lowest average low temperature) is January (20.3°C).

Average pressure in September
Moyamba, Sierra Leone

Average pressure in September - Moyamba, Sierra Leone
  • Average pressure in September: 1013mbar

The month with the highest atmospheric pressure is July (1014mbar).
The months with the lowest atmospheric pressure are February and March (1010.5mbar).

Average wind speed in September
Moyamba, Sierra Leone

Average wind speed in September - Moyamba, Sierra Leone
  • Average wind speed in September: 5km/h

The windiest months (with the highest average wind speed) are March and April (6km/h).
The calmest month (with the lowest average wind speed) is November (3.5km/h).

Average humidity in September
Moyamba, Sierra Leone

Average humidity in September - Moyamba, Sierra Leone
  • Average humidity in September: 92%

The months with the highest relative humidity are August and September (92%).
The month with the lowest relative humidity is February (65%).

Average rainfall in September
Moyamba, Sierra Leone

Average rainfall in September - Moyamba, Sierra Leone
  • Average rainfall in September: 247mm

The wettest month (with the highest rainfall) is August (328mm).
The driest month (with the least rainfall) is January (5mm).

Average rainfall days in September
Moyamba, Sierra Leone

Average rainfall days in September - Moyamba, Sierra Leone
  • Average rainfall days in September: 28.7 days

The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is January (3.8 days).

Average daylight in September /
Average sunshine in September
Moyamba, Sierra Leone

Average daylight in September / Average sunshine in September - Moyamba, Sierra Leone
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 42min).

  • Average sunshine in September: 4h and 5min

The month with the most sunshine is January (Average sunshine: 9h and 42min).
The month with the least sunshine is August (Average sunshine: 3h and 18min).

Average sunshine days in September
Moyamba, Sierra Leone

Average sunshine days in September - Moyamba, Sierra Leone
  • Average sunshine days in September: 0.8 days

The month with the most sunshine days is January (25.6 days).
The month with the least sunshine days is October (0.3 days).

Average UV index in September
Moyamba, Sierra Leone

Average UV index in September - Moyamba, Sierra Leone
  • Average UV index in September: 6

The months with the highest UV index are January, February, March, April, November and December (UV index 7).
The month with the lowest UV index is July (UV index 5).

Average cloud cover in September
Moyamba, Sierra Leone

Average cloud cover in September - Moyamba, Sierra Leone
  • Average cloud cover in September: 77

The month with the most cloud cover is August (Cloud cover 83).
The month with the least cloud cover is January (Cloud cover 20).

Average visibility in September
Moyamba, Sierra Leone

Average visibility in September - Moyamba, Sierra Leone
  • Average visibility in September: 6km

The months with the highest visibility are January, February, March and April (9km).
The months with the lowest visibility are July, August, September and October (6km).

Moyamba, Sierra Leone

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