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Monastir in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Monastir in September will be like? Take a look at our weather guide for Monastir, based on historical data.
Check flight prices to Monastir on Avionero:
September

Weather in Monastir in September 2025

Good Weather
Warm
☀️
Sunny
🌊
Warm water
Planning a trip to Monastir in September? You are in luck! The weather is generally good, with an average maximum temperature of +82°F and approximately 14 sunny days. Just be prepared for some rain, as there are usually around 6 rainy days and 38 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+82°F
Avg. max. temperature
+59°F
Min.
+106°F
Max.
38 mm
Total precipitation
69%
Avg. humidity
3 m/s
Avg. wind
14 ☀️
Sunny Days
5 ⛅️
Cloudy
6 🌦
Rainy
Our opinion: Monastir has good weather in September.

Average temperature in Monastir in September

Here are the expected maximum, average and minimum temperatures in Monastir for September based on the historical data.
Last Year
Historical Data

Going from a maximum of +93°F during the day to a minimum of +70°F during the night, the temperature in September averages around +84°F.

The average maximum temperature goes down 8% by the end of the month, compared with the beginning of the month, from +81°F to +79°F.

Is Monastir warm or cold in September?

Monastir is typically warm in September.

Maximum temperatures go down compared to the previous month from +88°F to +82°F. The minimum temperature also goes down from +75°F to +73°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

September is one of the warmest months in Monastir, here is the comparison with other months:

Water temperature in Monastir in September

Water in Monastir in September is Warm. It varies from +76°F to +81°F, with an average of +78°F. This is almost similar to the air temperature, which averages +82°F.

The water temperature in September is one of the warmest of the entire year:

The warmest water temperatures in Monastir are reached in August, when the average sea temperature rises to +80°F. The coldest water temperatures are in February, with an average of +58°F.

Can you swim in Monastir in September?

You can absolutely swim in Monastir in September, the water is warm (+78°F in average), similar to heated pools. Suitable for most people, including children and the elderly.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Bring your swimming suit, sunscreen and your favorite inflatable pink flamingo.

Climate in Monastir in September

Monastir weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+88°F+82°F+77°F
Min. temperature
+68°F+59°F+52°F
Max. temperature
+111°F+106°F+102°F
Rainfall
8 mm38 mm46 mm
Wind
3 m/s3 m/s3 m/s
Avg. water temperature
+80°F+78°F+74°F
Humidity
65%69%72%
Air pressure
1013 HPa1015 HPa1016 HPa
Sunny days
231412
Cloudy days
257
Rainy days
267
Snowy days
000

September typically has worse weather conditions compared to August. It’s getting colder in September. From +88°F in the day, the average maximum temperature lowers to +82°F. Prepare for more rain. Average rainfall goes from 8 mm to 38 mm. Humidity rises from 65% to 69%. The average wind speed doesn’t change much during September, staying around 3 m/s. The days becoming less sunny, going from 23 sunny days in August to 14 in September.

October brings much the same weather, it remains good.

Wind

Wind speed in Monastir in September based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Monastir is gradually increasing during September, going from 3 m/s to 4 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Monastir based on historical data.
Last Year
Historical Data
Typically, there is a 3% chance of rain on an average day in September, with total rainfall of approximately 1 mm. The maximum amount of rainfall per day is around 1 mm, which is considered light rain. Monastir is amazing in September with as little as 1 rainy days on average, so plan adventures in the great outdoors.
September is one of the rainiest months in Monastir, here is a comparison with other months, total mm:
Monastir wettest month is October, where a typical day has a 23% chance of precipitation and 46 mm of rainfall per day. July, on the other hand, is the driest month with a mere 3% chance of precipitation and 1 mm of rainfall per day.

How was the weather last September in Monastir?

This is the weather in Monastir in September 2023:
1 September
☀️
+81°F
2 September
☁️
+85°F
3 September
☀️
+85°F
4 September
☀️
+83°F
5 September
☁️
+82°F
6 September
☀️
+83°F
7 September
☀️
+84°F
8 September
☀️
+84°F
9 September
☀️
+84°F
10 September
☀️
+85°F
11 September
☀️
+82°F
12 September
☀️
+86°F
13 September
☀️
+88°F
14 September
☀️
+87°F
15 September
☀️
+86°F
16 September
☀️
+88°F
17 September
☀️
+89°F
18 September
☀️
+91°F
19 September
☀️
+93°F
20 September
☁️
+91°F
21 September
☀️
+93°F
22 September
☀️
+92°F
23 September
☀️
+85°F
24 September
☀️
+81°F
25 September
☀️
+79°F
26 September
☁️
+79°F
27 September
☁️
+80°F
28 September
☀️
+80°F
29 September
☀️
+79°F
30 September
☀️
+79°F
In September 2023 Monastir had 25 sunny days, 5 cloudy days, and 0 rainy days. The average maximum temperature was +84°F, with an absolute maximum of +93°F and a minimum of +79°F. The average humidity was 64%, with a maximum of 100% and a minimum of 31%. The average wind speed was 4 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Monastir climate has changed over the last 43 years.

The climate in Monastir in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1980 (+69°F) and the highest in 2014 (+77°F). The driest year was 2022 with only 164 mm of rainfall, and the wettest year was 2003 with 541 mm.

FAQ

Frequently asked questions about the weather in Monastir in September:

Is September a good time to visit Monastir?

September is a really good time to go to Monastir. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Monastir.

Can you sunbathe in Monastir in September?

September is warm in Monastir. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Can you swim in Monastir in September?

Yes, you can swim in Monastir in September, the water temperature averaging at +78°F. This temperature is considered warm and comfortable for most swimmers.

Is Monastir rainy in September?

Monastir is usually dry in September. Plan your packing around outdoor activities and exploring.

Is it sunny in Monastir in September?

The amount of sunny days in Monastir during September varies; prepare for a mix of clouds and sun.

Other cities in Tunisia

Check out the weather for other cities in Tunisia.

Monthly weather in Monastir

Source of the data

For this page, we’ve looked at the typical weather in Monastir, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.