September weather forecastChlef, Algeria
September
Weather in September
September in Chlef, Algeria, signifies the gradual recession of the intense summer heat. It welcomes the onset of autumn, with temperatures retrieving from their peak levels experienced in August. With an average temperature dip to 29.9°C (85.8°F), September marks the start of a cooler yet warm season with a slight increase in rainfall to 13mm (0.51"). The weather continues to cool as autumn progresses. The transition from September into October brings further decreased temperatures and increased rainfall.Temperature
As August transitions into September, Chlef sees a gentle drop in the average high-temperature, transitioning from a tropical 34.8°C (94.6°F) to a moderately hot 29.9°C (85.8°F). During the month of September, the temperature in Chlef falls to an average of 20.5°C (68.9°F).Heat index
The heat index value during September is evaluated at a tropical 32°C (89.6°F). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.Consider that heat index readings are for situations in the shade and light wind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
In September, the average relative humidity is 54%.Rainfall
In Chlef, during September, the rain falls for 6.9 days and regularly aggregates up to 13mm (0.51") of precipitation. Throughout the year, there are 108.3 rainfall days, and 308mm (12.13") of precipitation is accumulated.Snowfall
January, March through December are months without snowfall in Chlef.Daylight
The average length of the day in September in Chlef is 12h and 24min.On the first day of September in Chlef, sunrise is at 06:26 and sunset at 19:22. On the last day of the month, sunrise is at 06:49 and sunset at 18:39 CET.
Sunshine
The average sunshine in September in Chlef, Algeria, is 9.6h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chlef, Algeria
- Average high temperature in September: 29.9°C
The warmest month (with the highest average high temperature) is July (34.9°C).
The month with the lowest average high temperature is January (14.4°C).
- Average low temperature in September: 20.5°C
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is February (6.7°C).
Average pressure in September
Chlef, Algeria
- Average pressure in September: 1016.3mbar
The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is July (1014.7mbar).
Average wind speed in September
Chlef, Algeria
- Average wind speed in September: 8km/h
The windiest month (with the highest average wind speed) is March (10.8km/h).
The calmest month (with the lowest average wind speed) is October (7.8km/h).
Average humidity in September
Chlef, Algeria
- Average humidity in September: 54%
The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (42%).
Average rainfall in September
Chlef, Algeria
- Average rainfall in September: 13mm
The wettest month (with the highest rainfall) is November (50mm).
The driest month (with the least rainfall) is July (3mm).
Average rainfall days in September
Chlef, Algeria
- Average rainfall days in September: 6.9 days
The month with the highest number of rainy days is March (14.2 days).
The month with the least rainy days is August (2.6 days).
Average snowfall in September
Chlef, Algeria
- Average snowfall in September: 0mm
The month with the highest snowfall is February (6mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Chlef, Algeria
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Chlef, Algeria
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 36min
The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The month with the least sunshine is November (Average sunshine: 6h and 6min).
Average sunshine days in September
Chlef, Algeria
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is July (27 days).
The month with the least sunshine days is November (14.4 days).
Average UV index in September
Chlef, Algeria
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Chlef, Algeria
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in September
Chlef, Algeria
- Average visibility in September: 10km
The months with the highest visibility are February, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and March (9km).
