September weather forecastTunis, Tunisia

St. Vincent de Paul Cathedral in Tunis, the capital city of Tunisia

September

Weather in September

September shows signs of relief from the searing summer months as the temperatures start to recede. An increased total rainfall of 33mm (1.3") indicates the transition from the arid summer to the milder autumn season. A reduced UV index of 7 means less intense solar radiation, lowering the chances of sunburn. Despite the decline in sea temperature, water activities remain a popular choice till month-end. Tunis in September offers a balance between summer warmth and autumn coolness, making it a pleasant time to visit.

Temperature

Tunis's weather subtly changes with the onset of September, barely falling from 34.4°C (93.9°F) in August to a still tropical 30.2°C (86.4°F). In Tunis, the expected average low-temperature for September is a pleasant 20.7°C (69.3°F).

Rainfall

In September, the rain falls for 4 days. Throughout September, 33mm (1.3") of precipitation is accumulated. Throughout the year, in Tunis, there are 65 rainfall days, and 466mm (18.35") of precipitation is accumulated.

Sea temperature

In Tunis, the average seawater temperature in September is 25°C (77°F).
Note: Water activities including swimming and diving are pleasurable in temperatures between 25°C (77°F) and 29°C (84.2°F), ensuring comfort and enjoyment for extended time frames.

Daylight

In Tunis, the average length of the day in September is 12h and 25min.
On the first day of September in Tunis, sunrise is at 05:50 and sunset at 18:47. On the last day of the month, sunrise is at 06:14 and sunset at 18:04 CET.

Sunshine

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

UV index

The average daily maximum UV index in September in Tunis, Tunisia, is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be alert! The reflection of water and sand augments UV radiation intensity.

Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

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

In September, in Tunis, Tunisia, the rain falls for 4 days. Throughout September, 33mm (1.3") of precipitation is accumulated.

In Tunis, Tunisia, in September, the average water temperature 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.

The average day length in September is 12h and 25min.

In September, on the first day of the month, sunrise is at 05:50 and sunset at 18:47. On the last day of the month, in Tunis, Tunisia, sunrise is at 06:14 and sunset at 18:04 CET.

In September, the average sunshine duration is 8.6h.

In Tunis, Tunisia, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

34.4°C

30.2°C

26.8°C

Average low temperature

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in September
Tunis, Tunisia

Average high temperature in September: 30.2°C

The 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 least 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).
The months with the least 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).
The 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: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

Average sunshine in September: 8h and 36min

The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).