Monastir 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: June – October
What is the weather like in Monastir in September?
In September, Monastir 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 9 hours a day. Rain falls on about 6 days, adding up to 44 mm. On about 14 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 Monastir.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 86 | 97 | 92 |
| Day | 34° | 30° | 26° |
| Night | 23° | 21° | 18° |
| Sea | 27° | 26° | 24° |
| Sun | 11 h | 9 h | 8 h |
| Rain days | 2 | 6 | 6 |
More details for September
- Daylight
- 12 h 28 min05:58 – 18:26
- UV index
- 7 · highclear sky, noon (estimate)
- Muggy days
- 17 daysdew point 18 °C or more
- Wind
- 19 km/haverage daily peak
- Cloud cover
- 35 %on average
- Hot days
- 14 days30 °C or more
- Time zone
- UTC+1Africa/Tunis
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %95 %
- 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
Monastir in September: quick answers
Is Monastir hot in September?
Yes. In September, Monastir is hot: daytime highs average 30 °C and nights stay around 21 °C. On about 14 days the thermometer climbs to 30 °C or more.
Can you swim in Monastir in September?
Yes. In September the sea averages 26.3 °C – lovely and warm for swimming.
Does it rain much in Monastir in September?
Rain falls on about 6 days, adding up to 44 mm.
Monastir month by month
The whole year in MonastirAll destinations: Tunisia
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)