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La Grande-Motte Weather in September
September in La Grande-Motte brings high temperatures, with daytime highs of 25°C (77°F) and nights around 17°C (63°F). Quite a bit of rainfall is expected, around 103 mm (4.1 in), so pack an umbrella.
Rainfall in La Grande-Motte in September
Based on our climate data of the past 30 years, about 7 days of rain are anticipated, with 103 mm (4.1 in) on average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in La Grande-Motte in September
If you're visiting La Grande-Motte in September, expect highs of 25°C (77°F) and overnight lows around 17°C (63°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 17°C (63°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in La Grande-Motte in September
There are approximately 243 hours of sunshine this month, resulting in mostly clear days.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July and August typically offer the best weather for La Grande-Motte.
La Grande-Motte Temperature in September
Min Temperature
17°C (63°F)
Max Temperature
25°C (77°F)
Chance of Rain
24%
Precipitation
103 mm (4.1 in)
Rainy days
7 days
Humidity
71% *
Sunshine
243 hours *
Percentage Sunshine
*
* Data from: Montpellier, France (17 KM, 10 Miles).
La Grande-Motte Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in La Grande-Motte - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in La Grande-Motte typically drop from around 27°C (81°F) at the start of September to approximately 23°C (73°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 17°C (63°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for La Grande-Motte in September
Browse day-by-day weather records for La Grande-Motte spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
La Grande-Motte historical weather extremes in September
The extremes listed below come from historical weather data collected in La Grande-Motte from 1976 through 2026.
- La Grande-Motte recorded its highest September temperature of 35°C (95°F) on September 14, 2026.
- La Grande-Motte experienced its chilliest September day on September 24, 1977, reaching only 13°C (55°F).
- Nighttime temperatures dropped to 5°C (41°F) on September 21, 1977, marking the coldest September night on record.
Best Places in France in September
Find out more about the weather in France and which places have the best travel conditions in this month. See all of France in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in La Grande-Motte in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in La Grande-Motte in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling9/10 -
Walking9/10 -
Camping6/10 -
Outdoor sports9/10
La Grande-Motte 3-Day Forecast
More climate data for La Grande-Motte
Temperature Rainfall Sunshine Humidity
See the full La Grande-Motte climate overview or explore weather in France.
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Where to go in September - average daytime high across popular destinations.
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The 10 most charming villages in France
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