September weather forecastNiayene, Senegal
September
Weather in September
The first month of the autumn, September, is still a tropical month in Niayene, Senegal, with an average temperature varying between 25.5°C (77.9°F) and 34.4°C (93.9°F).Temperature
September experiences an average high-temperature of a still tropical 34.4°C (93.9°F), barely different from August's 34°C (93.2°F). During September in Niayene, the average low-temperature is recorded at a moderately hot 25.5°C (77.9°F).Heat index
For September, the heat index is appraised at a life-threatening hot 48°C (118.4°F). Be prepared: Heat cramps and heat exhaustion are probable. Continued activity may lead to heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. 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 to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
September is the most humid month in Niayene, with an average relative humidity of 70%.Rainfall
In Niayene, during September, the rain falls for 18 days and regularly aggregates up to 75mm (2.95") of precipitation. Throughout the year, in Niayene, Senegal, there are 68 rainfall days, and 285mm (11.22") of precipitation is accumulated.Daylight
In Niayene, the average length of the day in September is 12h and 13min.On the first day of September, sunrise is at 06:52 and sunset at 19:16. On the last day of the month, sunrise is at 06:53 and sunset at 18:54 GMT.
Sunshine
In Niayene, the average sunshine in September is 8.7h.UV index
The months with the highest UV index are April through June, September and October, with an average maximum UV index of 8. A UV Index reading of 8 to 10 represents a very high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 8 transforms into these recommendations:
Without constant care, eyes and skin might suffer damage in a short time. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Niayene, Senegal
- Average high temperature in September: 34.4°C
The warmest month (with the highest average high temperature) is May (41.4°C).
The month with the lowest average high temperature is August (34°C).
- Average low temperature in September: 25.5°C
The month with the highest average low temperature is July (25.8°C).
The coldest month (with the lowest average low temperature) is January (18.3°C).
Average pressure in September
Niayene, Senegal
- Average pressure in September: 1011.8mbar
The month with the highest atmospheric pressure is January (1013.1mbar).
The month with the lowest atmospheric pressure is April (1010.2mbar).
Average wind speed in September
Niayene, Senegal
- Average wind speed in September: 9.5km/h
The windiest month (with the highest average wind speed) is February (15.1km/h).
The calmest month (with the lowest average wind speed) is September (9.5km/h).
Average humidity in September
Niayene, Senegal
- Average humidity in September: 70%
The month with the highest relative humidity is September (70%).
The month with the lowest relative humidity is January (18%).
Average rainfall in September
Niayene, Senegal
- Average rainfall in September: 75mm
The wettest month (with the highest rainfall) is August (121mm).
The driest months (with the least rainfall) are January, February and December (0mm).
Average rainfall days in September
Niayene, Senegal
- Average rainfall days in September: 18 days
The month with the highest number of rainy days is August (19.8 days).
The months with the least rainy days are January and February (0.1 days).
Average daylight in September /
Average sunshine in September
Niayene, Senegal
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is May (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 7h and 48min).
Average sunshine days in September
Niayene, Senegal
- Average sunshine days in September: 10.3 days
The month with the most sunshine days is January (30.8 days).
The month with the least sunshine days is August (10 days).
Average UV index in September
Niayene, Senegal
- Average UV index in September: 8
The months with the highest UV index are April, May, June, September and October (UV index 8).
The months with the lowest UV index are January, February, March, July, August, November and December (UV index 7).
Average cloud cover in September
Niayene, Senegal
- Average cloud cover in September: 31
The month with the most cloud cover is August (Cloud cover 40).
The month with the least cloud cover is April (Cloud cover 6).
Average visibility in September
Niayene, Senegal
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
