Algiers weather in September
In September, Algiers has an average high of 31 °C87 °F and an average low of 20 °C68 °F, with about 39 mm1.5 in of precipitation. It is the 4th warmest month of the year and ranks 9th for precipitation.
How September compares with other months
Compared with August, September is 4 °C7.2 °F cooler on average and wetter by 27 mm1.0 in. Compared with October, September is 3.8 °C6.9 °F warmer on average and drier by 19 mm0.7 in. Daylight lasts about 12.4 hours around the middle of the month. Average relative humidity is 62% and the average cloud amount 38%.
Is September a good time to visit Algiers?
September is not among the most comfortable months by our comfort score: it is hot (average high 31 °C87 °F). The most comfortable months in Algiers are March–May and October.
What to wear in September
For Algiers in September, pack very light, breathable clothing, a sun hat and plenty of water.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Algiers | 3187 | 2068 | 391.5 |
| Blida | 3086 | 1966 | 391.5 |
| Médéa | 2476 | 1559 | 331.3 |
| Tizi Ouzou | 3188 | 1965 | 421.7 |
| El Achir | 2882 | 1457 | 401.6 |
| Bordj Bou Arreridj | 2781 | 1458 | 532.1 |
| Chlef | 3391 | 1967 | 301.2 |
| MSila | 3289 | 1865 | 321.2 |
| Béjaïa | 2679 | 2373 | 431.7 |
Nearby places that are more than 1 °C1.8 °F cooler: Médéa, El Achir, Bordj Bou Arreridj and Béjaïa.
Other months in Algiers
- January15 °C59 °F / 7 °C45 °F
- February16 °C61 °F / 7 °C45 °F
- March19 °C66 °F / 9 °C49 °F
- April22 °C72 °F / 12 °C53 °F
- May26 °C79 °F / 15 °C59 °F
- June32 °C90 °F / 19 °C67 °F
- July36 °C97 °F / 23 °C73 °F
- August36 °C96 °F / 23 °C74 °F
- September31 °C87 °F / 20 °C68 °F
- October27 °C80 °F / 16 °C61 °F
- November20 °C68 °F / 11 °C53 °F
- December16 °C61 °F / 8 °C47 °F
Frequently asked questions
How warm is Algiers in September?
In September the average high in Algiers is 31 °C (87 °F) and the average low is 20 °C (68 °F).
Does it rain a lot in Algiers in September?
On average about 39 mm (1.5 in) of precipitation falls in September; it ranks 9th of the 12 months.
Is September the warmest month in Algiers?
No. The warmest month in Algiers is July, with an average high of 36 °C (97 °F). The coldest month is February, with an average low of 7 °C (45 °F).
How long is the day in Algiers in September?
In the middle of September the day in Algiers lasts about 12.4 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Algiers in September?
The average relative humidity in September is about 62%. This is a long-term average for the whole day.
How cloudy is Algiers in September?
On average about 38% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 416 m, while Algiers lies at about 113 m. Temperatures on this page were therefore adjusted by +2 °C3.5 °F using the standard lapse rate of 6.5 °C per 1,000 m.