The climate in Illizi during September can be summarized as very hot and very dry.
September is in the fall / autumn in Illizi and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a warm 37°C (98°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 36.8°C 98.2°F |
|---|---|
| Nightly temperature | 22.8°C 73°F |
| Average temperature | 29.8°C 85.6°F |
| Daily sunshine | 10.4 hrs |
| Avg rainfall | 1 mm 0.1 ins |
| Rainy days | 1 days |
| Sea temperature | 25°C 77.1°F |
| Humidity | 44% |
| Windspeed | 9.4kph 6 mph |
On average September is the 5th driest month of the year in Illizi with around 1mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 10.4 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Illizi in September 2025.
Best places to visit in September
| Hottest month: | July | 39.5°C 103.1°F |
|---|---|---|
| Driest month: | July | 0mm 0ins |
| Sunniest month: | April | 11.7hrs |
| Coldest month: | January | 19.7°C 67.5°F |
| Wettest month: | March | 5mm 0.2ins |