Click on a day for an hourly weather forecast
The weather in Alger in September is very hot. The average temperatures are between 23°C and 29°C, drinking water regularly is advisable.
You can expect a few rainy days in Alger during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Alger in September 2025.
If you’re planning to visit Alger in the near future, we highly recommend that you review the 14 day weather forecast for Alger before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 10° | 6 | 25 | 0 | 106 mm | Good | Alger in January |
| February | 16° / 10° | 5 | 23 | 0 | 99 mm | Good | Alger in February |
| March | 18° / 11° | 6 | 25 | 0 | 114 mm | Good | Alger in March |
| April | 20° / 12° | 5 | 25 | 0 | 97 mm | Good | Alger in April |
| May | 23° / 15° | 4 | 27 | 0 | 68 mm | Perfect | Alger in May |
| June | 27° / 20° | 1 | 29 | 0 | 28 mm | Perfect | Alger in June |
| July | 32° / 24° | 0 | 31 | 0 | 8 mm | Good | Alger in July |
| August | 32° / 25° | 1 | 30 | 0 | 13 mm | Good | Alger in August |
| September | 29° / 23° | 2 | 28 | 0 | 45 mm | Good | Alger in September |
| October | 26° / 19° | 3 | 28 | 0 | 77 mm | Perfect | Alger in October |
| November | 20° / 15° | 5 | 25 | 0 | 125 mm | Good | Alger in November |
| December | 17° / 12° | 4 | 27 | 0 | 85 mm | Good | Alger in December |