September weather forecast
Sfax, Tunisia

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.