What is the weather like in Mont Saint-Michel in September?

Expect temperatures between 13°C and 20°C with 29% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Mont Saint-Michel in September?

Mont Saint-Michel in September scores 65/100 based on 30 years of climate data. Very good conditions overall.

Who should visit Mont Saint-Michel in September?

September in Mont Saint-Michel is ideal for: Cultural tourists, Business travelers.

Mont Saint-Michel Weather in September | 30-Year Forecast

Avg High

20°C

Hottest around day 5

Avg Low

13°C

Coolest around day 28

Rainy Days

19days

29% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Coastal Waters(Ocean)

19.5°C

Monthly Average

Water Feel

🏊Pleasant

Comfortable for most swimmers

Swim Rating

👍Good for swimming

Based on average sea surface temperature

Body of Water

Coastal Waters

Ocean

Mont Saint-Michel coastline

Essential Travel Info for Mont Saint-Michel

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

EUR

€ Euro

Language

French

Driving

Right side

Safety

High Safety

GPI: 1.895

Travel Intelligence

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Health & Safety Advisory

CDC travel health recommendations

7 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to France. Unvaccinated travelers 60 years and older may get vaccinated before traveling to France.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in France.If rabies exposures occur while in France, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Tick-borne Encephalitis

Avoid bug bitesLearn more abouttick-borne encephalitis at your destination.

+1 more

Source: CDC Travelers' Health

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Is September a Good Time to Visit Mont Saint-Michel?

👍Very good conditions overall(65/100)

Short Answer

September is excellent for visiting Mont Saint-Michel: comfortable 20°C temperatures, only 29% rain risk, and 9.1h of daily sunshine create ideal conditions for exploration.

Decision Factors

Vaccinations required

Yellow Fever

Health precautions needed

Be aware of: Leptospirosis, Leishmaniasis, Zika

Plenty of sunshine

9.1h of sunshine daily

Shoulder season - balanced conditions

50% of peak - good value with moderate crowds

Good For

🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

👴
Elderly travelers
77% humidity creates difficult conditions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Mont Saint-Michel in September averages 20°C with 29% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Mont Saint-Michel in September

What are the temperatures in Mont Saint-Michel in September?

Daytime highs average 20°C, nights drop to 13°C. Temperatures remain fairly consistent.

How many rainy days in Mont Saint-Michel in September?

Expect around 19 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Mont Saint-Michel in September?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is September peak season in Mont Saint-Michel?

This is shoulder season—moderate prices and manageable crowds.

Mont Saint-Michel Weather in September