September weather forecastPatama, Sierra Leone
September
Weather in September
The first month of the autumn, September, is still a warm month in Patama, Sierra Leone, with an average temperature ranging between min 21.5°C (70.7°F) and max 28.4°C (83.1°F).Temperature
With the onset of September, a modest change to a still moderately hot 28.4°C (83.1°F) from August's 27°C (80.6°F) is noted in high-temperature. Nighttime temperature dips to a mean of 21.5°C (70.7°F) during September.Heat index
September's average heat index is estimated at a torrid 35°C (95°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
In Patama, the average relative humidity in September is 92%.Rainfall
In Patama, during September, the rain falls for 29.7 days and regularly aggregates up to 260mm (10.24") of precipitation. In Patama, during the entire year, the rain falls for 270.4 days and collects up to 1590mm (62.6") of precipitation.Daylight
In September, the average length of the day is 12h and 10min.On the first day of September, sunrise is at 06:35 and sunset at 18:51. On the last day of the month, sunrise is at 06:31 and sunset at 18:35 GMT.
Sunshine
The average sunshine in September is 4.6h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Patama, Sierra Leone
- Average high temperature in September: 28.4°C
The warmest month (with the highest average high temperature) is February (36.3°C).
The month with the lowest average high temperature is August (27°C).
- Average low temperature in September: 21.5°C
The month with the highest average low temperature is April (23.2°C).
The coldest month (with the lowest average low temperature) is January (19.7°C).
Average pressure in September
Patama, Sierra Leone
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is July (1014.3mbar).
The months with the lowest atmospheric pressure are February and March (1010.6mbar).
Average wind speed in September
Patama, Sierra Leone
- Average wind speed in September: 4.7km/h
The windiest month (with the highest average wind speed) is August (5.5km/h).
The calmest month (with the lowest average wind speed) is November (3.4km/h).
Average humidity in September
Patama, Sierra Leone
- Average humidity in September: 92%
The month with the highest relative humidity is August (93%).
The month with the lowest relative humidity is January (65%).
Average rainfall in September
Patama, Sierra Leone
- Average rainfall in September: 260mm
The wettest month (with the highest rainfall) is August (296mm).
The driest month (with the least rainfall) is January (8mm).
Average rainfall days in September
Patama, Sierra Leone
- Average rainfall days in September: 29.7 days
The month with the highest number of rainy days is October (30.3 days).
The month with the least rainy days is January (5.8 days).
Average daylight in September /
Average sunshine in September
Patama, 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 42min).
- Average sunshine in September: 4h and 36min
The month with the most sunshine is January (Average sunshine: 9h and 36min).
The month with the least sunshine is August (Average sunshine: 2h and 54min).
Average sunshine days in September
Patama, Sierra Leone
- Average sunshine days in September: 0.1 days
The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is September (0.1 days).
Average UV index in September
Patama, Sierra Leone
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April and December (UV index 7).
The months with the lowest UV index are July and August (UV index 5).
Average cloud cover in September
Patama, Sierra Leone
- Average cloud cover in September: 79
The month with the most cloud cover is August (Cloud cover 87).
The month with the least cloud cover is January (Cloud cover 25).
Average visibility in September
Patama, Sierra Leone
- Average visibility in September: 6km
The month with the highest visibility is March (9km).
The months with the lowest visibility are June, July, August, September and October (6km).
