Algiers
Algeria
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Algiers, Algeria

Cloudy skies above Seaside Boulevard in Algiers, Algeria
Cloudy skies above Seaside Boulevard in Algiers, Algeria
The first month of the autumn, September, is still a warm month in Algiers, Algeria, with average temperature ranging between max 29.7°C (85.5°F) and min 17.8°C (64°F).

Temperature

In Algiers, Algeria, the average high-temperature is relatively the same as in August - a moderately hot 29.7°C (85.5°F). In Algiers, the average low-temperature is 17.8°C (64°F).

Humidity

In September, the average relative humidity in Algiers is 75%.

Rainfall

In Algiers, in September, during 5 rainfall days, 28.4mm (1.1") of precipitation is typically accumulated. Throughout the year, there are 90 rainfall days, and 517.9mm (20.4") of precipitation is accumulated.

Sea temperature

In Algiers, in September, the average water temperature is 24.5°C (76.1°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 24.5°C (76.1°F).

Daylight

In September, the average length of the day is 12.4h.

Sunshine

The average sunshine in Algiers, Algeria, is 7.9h.

UV index

The average daily maximum UV index in Algiers is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the Sun's UV rays for the average person.
The daily maximum UV index of 7 interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in September in Algiers?

The average high-temperature, in September, in Algiers, Algeria, is 29.7°C (85.5°F), while the average low-temperature is 17.8°C (64°F).

What is the average humidity in September in Algiers?

In September, the average relative humidity in Algiers, Algeria, is 75%.

How much does it rain in Algiers in September?

In Algiers, Algeria, during September, the rain falls for 5 days and regularly aggregates up to 28.4mm (1.1") of precipitation.

What is the water temperature in September in Algiers?

In Algiers, Algeria, in September, the average water temperature is 24.5°C (76.1°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 24.5°C (76.1°F).

What is the average length of the day in September in Algiers?

The average length of the day in September in Algiers is 12.4h.

How many hours of sunshine does Algiers have in September?

In September, the average sunshine in Algiers is 7.9h.

How high is the UV index in September in Algiers?

In September, the average daily maximum UV index in Algiers, Algeria, is 7. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
Average temperature in September - Algiers, Algeria
  • Average high temperature in September: 29.7°C

The warmest month (with the highest average high temperature) is August (32.3°C).
The month with the lowest average high temperature is January (16.7°C).

  • Average low temperature in September: 17.8°C

The month with the highest average low temperature is August (20°C).
The coldest month (with the lowest average low temperature) is January (5.8°C).

Average humidity in September - Algiers, Algeria
  • Average humidity in September: 75%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (71%).

Average rainfall in September - Algiers, Algeria
  • Average rainfall in September: 28.4mm

The wettest month (with the highest rainfall) is November (85.7mm).
The driest month (with the lowest rainfall) is July (3mm).

Average rainfall days in September - Algiers, Algeria
  • Average rainfall days in September: 5 days

Months with the highest number of rainy days are January, March and December (11 days).
Months with the lowest number of rainy days are July and August (2 days).

Average sea temperature in September - Algiers, Algeria
  • Average sea temperature in September: 24.5°C

The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is February (14.8°C).

Average daylight in September / Average sunshine in September - Algiers, Algeria
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 7.9h

The month with most sunshine is July (Average sunshine: 11.3h).
The month with least sunshine is December (Average sunshine: 4.4h).

Average UV index in September - Algiers, Algeria
  • Average UV index in September: 7

Months with the highest UV index are June and July (UV index 10).
Months with the lowest UV index are January and December (UV index 2).