Tunis
Tunisia
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Tunis, Tunisia

St. Vincent de Paul Cathedral in Tunis, the capital city of Tunisia, lit under the night sky
St. Vincent de Paul Cathedral in Tunis, the capital city of Tunisia, lit under the night sky
September, the first month of the autumn, in Tunis, is also a hot month, with average temperature ranging between min 20.7°C (69.3°F) and max 30.2°C (86.4°F).
The ideal sea water temperature of 25°C (77°F) and only 4 rainfall days, with 32.5mm (1.3") of accumulated rainfall, make September the best time for swimming and other water activities.

Temperature

In September, the average high-temperature in Tunis slightly decreases, from a tropical 34.4°C (93.9°F) in August, to a still hot 30.2°C (86.4°F). In September, the average low-temperature is 20.7°C (69.3°F).

Rainfall

In Tunis, during September, the rain falls for 4 days and regularly aggregates up to 32.5mm (1.3") of precipitation. Throughout the year, in Tunis, Tunisia, there are 65 rainfall days, and 465.5mm (18.3") of precipitation is accumulated.

Sea temperature

In Tunis, the average seawater temperature in September is 25°C (77°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The average length of the day in Tunis, Tunisia, is 12.4h.

Sunshine

In September, the average sunshine in Tunis is 8.6h.

UV index

In September, the average daily maximum UV index in Tunis is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 7 in September transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Tunis?

The average high-temperature, in September, in Tunis, is 30.2°C (86.4°F), while the average low-temperature is 20.7°C (69.3°F).

How many days does it rain in September in Tunis?

In Tunis, in September, during 4 rainfall days, 32.5mm (1.3") of precipitation is typically accumulated.

What is the water temperature in September in Tunis?

In Tunis, Tunisia, the average seawater temperature in September is 25°C (77°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

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

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

How many hours of sunshine does Tunis have in September?

The average sunshine in September in Tunis, Tunisia, is 8.6h.

How high is the UV index in September in Tunis?

In September, the average daily maximum UV index in Tunis is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Tunis, Tunisia
  • Average high temperature in September: 30.2°C

Warmest months (with the highest average high temperature) are July and August (34.4°C).
The month with the lowest average high temperature is January (16.2°C).

  • Average low temperature in September: 20.7°C

The month with the highest average low temperature is August (22.9°C).
The coldest month (with the lowest average low temperature) is February (8.3°C).

Average rainfall in September - Tunis, Tunisia
  • Average rainfall in September: 32.5mm

The wettest month (with the highest rainfall) is December (66.8mm).
The driest month (with the lowest rainfall) is July (3.1mm).

Average rainfall days in September - Tunis, Tunisia
  • Average rainfall days in September: 4 days

The month with the highest number of rainy days is January (9 days).
Months with the lowest number of rainy days are July and August (1 days).

Average sea temperature in September - Tunis, Tunisia
  • Average sea temperature in September: 25°C

The best month for swimming (with the highest average sea temperature) is August (26°C).
Coldest months (with the lowest average sea temperature) are January, February, March and April (15°C).

Average daylight in September / Average sunshine in September - Tunis, Tunisia
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 8.6h

The month with most sunshine is July (Average sunshine: 11.5h).
The month with least sunshine is January (Average sunshine: 4.7h).

Average UV index in September - Tunis, Tunisia
  • Average UV index in September: 7

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