Weather in Algiers in September 2025
Average weather
Average temperature in Algiers in September
Going from a maximum of +37°C during the day to a minimum of +20°C during the night, the temperature in September averages around +28°C.
The average maximum temperature goes down 18% by the end of the month, compared with the beginning of the month, from +29°C to +26°C.
Is Algiers warm or cold in September?
Algiers is typically warm in September.
Maximum temperatures go down compared to the previous month from +29°C to +27°C. The minimum temperature also goes down from +23°C to +21°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is one of the warmest months in Algiers, here is the comparison with other months:
Water temperature in Algiers in September
Water in Algiers in September is Comfortable. It varies from +23°C to +26°C, with an average of +24°C. This is almost similar to the air temperature, which averages +27°C.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Algiers in September?
Climate in Algiers in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +29°C | +27°C | +24°C | ||||
| Min. temperature | ||||||
| +16°C | +14°C | +8°C | ||||
| Max. temperature | ||||||
| +39°C | +38°C | +36°C | ||||
| Rainfall | ||||||
| 7 mm | 26 mm | 51 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +25°C | +24°C | +22°C | ||||
| Humidity | ||||||
| 68% | 70% | 72% | ||||
| Air pressure | ||||||
| 1014 HPa | 1015 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 20 | 12 | 11 | ||||
| Cloudy days | ||||||
| 6 | 7 | 8 | ||||
| Rainy days | ||||||
| 2 | 5 | 7 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September typically has worse weather conditions compared to August. It’s getting colder in September. From +29°C in the day, the average maximum temperature lowers to +27°C. Prepare for more rain. Average rainfall goes from 7 mm to 26 mm. Humidity rises from 68% to 70%. The average wind speed doesn’t change much during September, staying around 2 m/s. The days becoming less sunny, going from 20 sunny days in August to 12 in September.
October brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Algiers is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Algiers?
Climate Change over Years
The climate in Algiers in September has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+20°C) and the highest in 2011 (+24°C). The driest year was 2000 with only 292 mm of rainfall, and the wettest year was 1982 with 852 mm.
FAQ
Is September a good time to visit Algiers?
Can you sunbathe in Algiers in September?
Can you swim in Algiers in September?
Is Algiers rainy in September?
Is it sunny in Algiers in September?
Other cities in Algeria
Monthly weather in Algiers
Source of the data
For this page, we’ve looked at the typical weather in Algiers, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.