Sousse Weather in September
September in Sousse typically sees daytime highs of 31°C (88°F) and nighttime lows of 22°C (72°F). Expect some rainfall during the month.
Rainfall in Sousse in September
Typically, you can expect about 4 days of rain this month, with 47 mm (1.9 in) on average. Rainfall tends to arrive in short, intense showers this month. Rain days are few, but the showers can be surprisingly heavy.
Temperature in Sousse in September
Daytime temperatures in Sousse reach 31°C (88°F) in September, dropping to 22°C (72°F) at night. The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing.
Average water temperature in September
The water is 25°C (77°F) this month, warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.For Sousse itself, March, April, May, October and November generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Sousse Temperature in September
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Sousse Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sousse - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Sousse typically drop from around 31°C (88°F) at the start of September to approximately 28°C (82°F) by the end. Nights are warm, with lows typically ranging from 20°C (68°F) to 24°C (75°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Sousse in September
Browse day-by-day weather records for Sousse spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sousse historical weather extremes in September
Based on 21 years of weather observations in Sousse between 2004 and 2025, these are the recorded extremes.
- On September 23, 2012, temperatures climbed to 40°C (104°F), marking the warmest September day on record.
- The coldest September day was on September 27, 2008, with a maximum of 20°C (68°F).
- The lowest overnight temperature recorded in September was 15°C (59°F) (September 28, 2004).
Best Places in Tunisia in September
Find out more about the weather in Tunisia and which places have the best travel conditions in this month. See all of Tunisia in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Sousse in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. With water temperatures around 25°C (77°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes.
What To Do in Sousse in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling8/10 -
Walking8/10 -
Camping10/10 -
Outdoor sports8/10
Sousse 3-Day Forecast
Temperature Rainfall Water Temp
See the full Sousse climate overview or explore weather in Tunisia.
Popular in September
Where to go in September - average daytime high across popular destinations.
Monastir
31°C (88°F) Port El Kantaoui30°C (86°F) Midoun
31°C (88°F) Sousse31°C (88°F) Ariana29°C (84°F) Tunis30°C (86°F) Hammamet29°C (84°F) Nabeul28°C (82°F) 
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