September weather forecast
Sfax, Tunisia

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Weather in September

As September arrives, Sfax starts transitioning from summer heat to a more comfortable phase. Interestingly, the temperatures drop from 19.8°C (67.6°F) to 29.8°C (85.6°F). September also marks the return of rain with 24mm (0.94") falling across two days. The month brings relief from the hot summer, and the climate starts becoming more pleasant. An average of 9.1 hours of daylight makes for delightful afternoons, and the evenings grow longer.

Temperature

The high-temperature average in September for Sfax is a moderately hot 29.8°C (85.6°F), staying closely aligned with August's conditions. Throughout September, Sfax encounters an average temperature drop to a refreshing 19.8°C (67.6°F).

Heat index

In September, the heat index is evaluated at a hot 33°C (91.4°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

In Sfax, the average relative humidity in September is 65%.

Rainfall

In Sfax, during September, the rain falls for 2 days and regularly aggregates up to 24mm (0.94") of precipitation. Throughout the year, there are 32 rainfall days, and 237mm (9.33") of precipitation is accumulated.

Sea temperature

In Sfax, the average seawater temperature in September is 27°C (80.6°F).
Note: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.

Daylight

The average length of the day in September in Sfax is 12h and 23min.
On the first day of September, sunrise is at 05:50 and sunset at 18:43. On the last day of the month, sunrise is at 06:11 and sunset at 18:02 CET.

Sunshine

In September, the average sunshine in Sfax is 9.1h.

UV index

The average daily maximum UV index in September is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 8 during September translates into the following recommendations:
Being unprotected puts skin and eyes at risk of rapid damage. Always be safe. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.

Frequently asked questions

How hot is it in Sfax in September?

The high-temperature, in September, in Sfax, is 29.8°C (85.6°F), while the low-temperature averages to 19.8°C (67.6°F). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in September is evaluated at 33°C (91.4°F).

What is the average humidity in September in Sfax?

In September, the average relative humidity in Sfax is 65%.

How many days does it rain in September in Sfax?

In September, the rain falls for 2 days. Throughout September, 24mm (0.94") of precipitation is accumulated.

What is the sea water temperature in September in Sfax?

In Sfax, Tunisia, the average seawater temperature in September is 27°C (80.6°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

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

In Sfax, Tunisia, the average day length in September is 12h and 23min.

When is the sunrise / sunset in September in Sfax?

On the first day of September in Sfax, sunrise is at 05:50 and sunset at 18:43. On the last day of the month, sunrise is at 06:11 and sunset at 18:02 CET.

How long on average sun shines in September in Sfax?

In Sfax, Tunisia, the average sunshine duration in September is 9.1h.

What is the UV index intensity in September in Sfax?

In September, the average daily maximum UV index is 8. A UV Index estimate of 8 to 10 represents a very high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Sfax, Tunisia

Average temperature in September - Sfax, Tunisia
  • Average high temperature in September: 29.8°C

The warmest month (with the highest average high temperature) is August (32.2°C).
The month with the lowest average high temperature is January (16.7°C).

  • Average low temperature in September: 19.8°C

The month with the highest average low temperature is August (21.1°C).
The coldest month (with the lowest average low temperature) is January (5.8°C).

Average humidity in September
Sfax, Tunisia

Average humidity in September - Sfax, Tunisia
  • Average humidity in September: 65%

The months with the highest relative humidity are October and December (66%).
The month with the lowest relative humidity is July (59%).

Average rainfall in September
Sfax, Tunisia

Average rainfall in September - Sfax, Tunisia
  • Average rainfall in September: 24.1mm

The wettest month (with the highest rainfall) is October (56.4mm).
The driest month (with the least rainfall) is July (1.8mm).

Average rainfall days in September
Sfax, Tunisia

Average rainfall days in September - Sfax, Tunisia
  • Average rainfall days in September: 2 days

The months with the highest number of rainy days are January, February, March, October and December (4 days).
The month with the least rainy days is July (0 days).

Average sea temperature in September
Sfax, Tunisia

Average sea temperature in September - Sfax, Tunisia
  • Average sea temperature in September: 27°C

The best month for swimming (with the highest average sea temperature) is August (27.7°C).
The coldest month (with the lowest average sea temperature) is February (14.5°C).

Average daylight in September /
Average sunshine in September
Sfax, Tunisia

Average daylight in September / Average sunshine in September - Sfax, Tunisia
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).

Average UV index in September
Sfax, Tunisia

Average UV index in September - Sfax, Tunisia
  • Average UV index in September: 8

The months with the highest UV index are June, July and August (UV index 10).
The month with the lowest UV index is December (UV index 2).

Sfax, Tunisia

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