Montbonnot-Saint-Martin Weather in September

In Montbonnot-Saint-Martin, September brings pleasant daytime temperatures around 19°C (66°F), with nights cooling to 8°C (46°F). Expect quite a bit of rainfall this month.

Rainfall in Montbonnot-Saint-Martin in September

On average, there are about 11 days with rain during this month, averaging 122 mm (4.8 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Montbonnot-Saint-Martin in September

In September, Montbonnot-Saint-Martin sees pleasant temperatures, with highs of 19°C (66°F). Nights drop to around 8°C (46°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Montbonnot-Saint-Martin in September

With approximately 193 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you prefer dry days with pleasant temperatures, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit France, check out our Montbonnot-Saint-Martin's climate page.

Montbonnot-Saint-Martin Temperature in September

Min Temperature 8°C (46°F)  

Max Temperature 19°C (66°F)  

Chance of Rain 36%  

Precipitation 122 mm (4.8 in)  

Rainy days 11 days  

Humidity 79% *  

Sunshine 193 hours *  

Percentage Sunshine *  

* Data from: Grenoble, France (8 KM, 5 Miles).

What to Wear in Montbonnot-Saint-Martin in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Montbonnot-Saint-Martin in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

3/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit France, check out our Montbonnot-Saint-Martin's climate page.

More climate data for Montbonnot-Saint-Martin

Temperature Rainfall Sunshine Humidity

See the full Montbonnot-Saint-Martin climate overview or explore weather in France.