Sousse weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: May – October
What is the weather like in Sousse in September?
In September, Sousse is hot: daytime highs average 30 °C, and even at night it stays warm at around 21 °C. The sea averages 26.3 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain falls on about 6 days, adding up to 44 mm. On about 15 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is an excellent month for a holiday in Sousse.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 84 | 94 | 89 |
| Day | 34° | 30° | 26° |
| Night | 23° | 21° | 18° |
| Sea | 27° | 26° | 24° |
| Sun | 10 h | 8 h | 7 h |
| Rain days | 2 | 6 | 6 |
More details for September
- Daylight
- 12 h 28 min05:59 – 18:27
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 15 daysdew point 18 °C or more
- Wind
- 19 km/haverage daily peak
- Cloud cover
- 35 %on average
- Hot days
- 15 days30 °C or more
- Time zone
- UTC+1Africa/Tunis
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 20 %89 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
Sousse in September: quick answers
Is Sousse hot in September?
Yes. In September, Sousse is hot: daytime highs average 30 °C and nights stay around 21 °C. On about 15 days the thermometer climbs to 30 °C or more.
Can you swim in Sousse in September?
Yes. In September the sea averages 26.3 °C – lovely and warm for swimming.
Does it rain much in Sousse in September?
Rain falls on about 6 days, adding up to 44 mm.
Sousse month by month
The whole year in SousseAll destinations: TunisiaWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)