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Weather in Mont Saint-Michel for September 2025

Your guide to Mont Saint-Michel weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Mont Saint-Michel has been nearly identical to the historical average, with a temperature of 19.2 °C (showing only a slight deviation of 0.5 °C).

  • The forecast for the upcoming days in Mont Saint-Michel predicts a temperature of 20.8 °C, which is slightly above the historical average.

  • In general, the average temperature in Mont Saint-Michel at the beginning of September is 19.3 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 16.9 °C by the end of September.

    • Rain 🌧️

  • Mont Saint-Michel in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 102.2 mm.

    • More

  • Is September a good time to visit Mont Saint-Michel? check out the best time to travel to Mont Saint-Michel page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
10
Dry days
Average rainy days
20
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/14°
Temperatures
Average wind speed
33 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Mont Saint-Michel Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
19°
2
Light rain
20°
3
Light rain shower
20°
4
Patchy rain possible
18°
5
Light rain shower
18°
6
Patchy rain possible
21°
7
Light rain shower
19°
8
Light rain shower
17°
9
Patchy rain possible
18°
10
Patchy rain possible
18°
11
Patchy light drizzle
17°
12
Light rain shower
14°
13
Moderate rain
18°
14
Patchy rain possible
23°
15
Patchy rain possible
20°
16
Patchy rain possible
19°
17
Patchy rain possible
21°
18
Patchy rain possible
19°
19
Patchy rain possible
24°
20
Sunny
26°
21
Partly cloudy
24°
22
Moderate rain
18°
23
Fog
20°
24
Patchy rain possible
20°
25
Mist
19°
26
Sunny
20°
27
Light rain shower
14°
28
Light rain shower
14°
29
Patchy rain possible
15°
30
Patchy rain possible
16°

Temperatures trend during September in Mont Saint-Michel

See the weather trend as well as the moving average line

September weather in Mont Saint-Michel day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 19° /16° 2.8 mm 4
2 Sept. Light rain
Light rain
 20° /15° 8.3 mm 5
3 Sept. Light rain shower
Light rain shower
 20° /16° 3.1 mm 5
4 Sept. Patchy rain possible
Patchy rain possible
 18° /15° 1.9 mm 4
5 Sept. Light rain shower
Light rain shower
 18° /15° 3.3 mm 4
6 Sept. Patchy rain possible
Patchy rain possible
 21° /15° 0 mm 5
7 Sept. Light rain shower
Light rain shower
 19° /15° 6.1 mm 5
8 Sept. Light rain shower
Light rain shower
 17° /13° 8.2 mm 5
9 Sept. Patchy rain possible
Patchy rain possible
 18° /14° 1.8 mm 4
10 Sept. Patchy rain possible
Patchy rain possible
 18° /14° 4.1 mm 4
11 Sept. Patchy light drizzle
Patchy light drizzle
 17° /14° 3.8 mm 4
12 Sept. Light rain shower
Light rain shower
 14° /13° 6.7 mm 3
13 Sept. Moderate rain
Moderate rain
 18° /11° 8.5 mm 0.7
14 Sept. Patchy rain possible
Patchy rain possible
 23° /11° 0.6 mm 0.5
15 Sept. Patchy rain possible
Patchy rain possible
 20° /12° 0.9 mm 1
16 Sept. Patchy rain possible
Patchy rain possible
 19° /10° 0.3 mm 0.8
17 Sept. Patchy rain possible
Patchy rain possible
 21° /14° 1.3 mm 0.4
18 Sept. Patchy rain possible
Patchy rain possible
 19° /12° 1.7 mm 3
19 Sept. Patchy rain possible
Patchy rain possible
 24° /12° 1.7 mm 4
20 Sept. Sunny
Sunny
 26° /14° 0 mm 5
21 Sept. Partly cloudy
Partly cloudy
 24° /17° 0 mm 5
22 Sept. Moderate rain
Moderate rain
 18° /13° 5.7 mm 4
23 Sept. Fog
Fog
 20° /12° 0 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 20° /11° 1.3 mm 4
25 Sept. Mist
Mist
 19° /10° 0 mm 3
26 Sept. Sunny
Sunny
 20° /8° 0 mm 4
27 Sept. Light rain shower
Light rain shower
 14° /12° 4.2 mm 3
28 Sept. Light rain shower
Light rain shower
 14° /12° 3.5 mm 3
29 Sept. Patchy rain possible
Patchy rain possible
 15° /11° 0.9 mm 4
30 Sept. Patchy rain possible
Patchy rain possible
 16° /14° 1.6 mm 4
Next
Important Notice
Our weather forecast for Mont Saint-Michel in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Mont Saint-Michel forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Mont Saint-Michel weather in September vs August vs October

Compare September weather in Mont Saint-Michel with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures20°/16°17°/14°16°/12°
Rainfall30 mm102 mm84 mm
Wind24.3 km/h32.7 km/h28.5 km/h
Humidity75%76%79%
Rainy days7 days20 days16 days
Dry days24 days10 days15 days

Planning a trip to Mont Saint-Michel? Discover the best time to visit

Mont Saint-Michel in September - FAQ

What are the expected maximum and minimum temperatures in Mont Saint-Michel during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Mont Saint-Michel during September?
Significant rainfall exceeding 102.2 mm is expected in Mont Saint-Michel during September, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Mont Saint-Michel during September?
The average wind speed in Mont Saint-Michel during September is 33 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Mont Saint-Michel in September?

As you prepare for your trip to Mont Saint-Michel in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Mont Saint-Michel, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

September rainfall patterns in Mont Saint-Michel

Explore the daily rainfall trends and prepare for Mont Saint-Michels September weather 💧

UV exposure in Mont Saint-Michel during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

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Location coordinates Where is Mont Saint-Michel?

Get accurate weather forecasts for Mont Saint-Michel, located at latitude 48.636 and longitude -1.511. Stay updated with localized weather information tailored for Mont Saint-Michel.

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