September weather forecast
Algiers, Algeria

As Algiers moves into September, the intense summer heat gradually declines, leading to a more comfortable climate. Still, the city experiences less rainfall with an average of just 28mm (1.1"). September marks a good time to visit, with pleasant weather that is perfect for strolling across the city's fascinating sites. Enjoy the transition from summer into fall as Algiers showcases its remarkable beauty.

Temperature

The average high-temperature during September registers at a moderately hot 29.7°C (85.5°F), closely corresponding to the preceding month. In Algiers, in September, the average low-temperature is a comfortable 17.8°C (64°F).

Heat index

In September, the average heat index is computed to be a torrid 35°C (95°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In September, the average relative humidity is 75%.

Rainfall

In September, in Algiers, the rain falls for 5 days. Throughout September, 28mm (1.1") of precipitation is accumulated. Throughout the year, there are 90 rainfall days, and 518mm (20.39") of precipitation is accumulated.

Sea temperature

In Algiers, in September, the average water temperature is 24.5°C (76.1°F).
Note: 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

The average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 06:19 and sunset at 19:15. On the last day of September, sunrise is at 06:42 and sunset at 18:32 CET.

Sunshine

The average sunshine in September is 7.9h.

UV index

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during September morphs into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.