September weather forecastMateboi, Sierra Leone
September
Weather in September
September, the first month of the autumn in Mateboi, is also a moderately hot month, with temperature in the range of an average high of 28.9°C (84°F) and an average low of 21.8°C (71.2°F).Temperature
Mateboi's September reports an average high-temperature of a still warm 28.9°C (84°F), exhibiting a minor difference from August. Mateboi experiences a mean temperature of 21.8°C (71.2°F) during September nights.Heat index
During September, the heat index is computed to be a sweltering 37°C (98.6°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. 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 'real feel' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
The average relative humidity in September in Mateboi is 92%.Rainfall
In Mateboi, Sierra Leone, in September, it is raining for 28.6 days, with typically 261mm (10.28") of accumulated precipitation. In Mateboi, during the entire year, the rain falls for 225.8 days and collects up to 1471mm (57.91") of precipitation.Daylight
The average length of the day in September is 12h and 10min.On the first day of September, sunrise is at 06:40 and sunset at 18:57. On the last day of the month, sunrise is at 06:37 and sunset at 18:40 GMT.
Sunshine
In September, the average sunshine in Mateboi is 5.2h.UV index
The average daily maximum UV index in September in Mateboi is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 6 during September translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mateboi, Sierra Leone
- Average high temperature in September: 28.9°C
The warmest month (with the highest average high temperature) is March (38.4°C).
The month with the lowest average high temperature is August (27.6°C).
- Average low temperature in September: 21.8°C
The month with the highest average low temperature is April (24°C).
The coldest month (with the lowest average low temperature) is December (19.7°C).
Average pressure in September
Mateboi, Sierra Leone
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is July (1014.1mbar).
The months with the lowest atmospheric pressure are February and March (1010.5mbar).
Average wind speed in September
Mateboi, Sierra Leone
- Average wind speed in September: 4.7km/h
The windiest month (with the highest average wind speed) is April (5.8km/h).
The calmest month (with the lowest average wind speed) is November (3.3km/h).
Average humidity in September
Mateboi, Sierra Leone
- Average humidity in September: 92%
The month with the highest relative humidity is August (93%).
The months with the lowest relative humidity are January and February (58%).
Average rainfall in September
Mateboi, Sierra Leone
- Average rainfall in September: 261mm
The wettest month (with the highest rainfall) is August (332mm).
The driest month (with the least rainfall) is December (3mm).
Average rainfall days in September
Mateboi, Sierra Leone
- Average rainfall days in September: 28.6 days
The month with the highest number of rainy days is July (30.3 days).
The month with the least rainy days is January (2.2 days).
Average daylight in September /
Average sunshine in September
Mateboi, Sierra Leone
- Average daylight in September: 12h and 12min
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 36min).
- Average sunshine in September: 5h and 12min
The month with the most sunshine is January (Average sunshine: 9h and 48min).
The month with the least sunshine is August (Average sunshine: 3h and 42min).
Average sunshine days in September
Mateboi, Sierra Leone
- Average sunshine days in September: 0.7 days
The month with the most sunshine days is January (27.4 days).
The month with the least sunshine days is July (0.5 days).
Average UV index in September
Mateboi, 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 months with the lowest UV index are July and August (UV index 5).
Average cloud cover in September
Mateboi, Sierra Leone
- Average cloud cover in September: 76
The month with the most cloud cover is August (Cloud cover 83).
The months with the least cloud cover are January and February (Cloud cover 15).
Average visibility in September
Mateboi, Sierra Leone
- Average visibility in September: 5km
The months with the highest visibility are February, March and April (10km).
The month with the lowest visibility is September (5km).
