Le François Weather in September

Le François in September sees high daytime temperatures of 30°C (86°F) and nighttime lows of 26°C (79°F). Rainfall is fairly high this month at around 159 mm (6.3 in), so pack a rain jacket to stay dry.

Rainfall in Le François in September

Analyzing past climate data, one can expect approximately 27 days of rain, averaging 159 mm (6.3 in). Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Le François in September

Daytime highs in Le François in September reach 30°C (86°F), with nights around 26°C (79°F). This kind of day-to-night contrast is typical for this time of year. Nights are warm at 26°C (79°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down.

Sunshine in Le François in September

Enjoy a sunny month with about 219 hours of sunshine, the clear skies make Le François even more beautiful.

Wind Speed in Le François in September

In September, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

Average water temperature in September

With water at 29°C (84°F), conditions are warm and calm. Perfect for those who like tropical water temperatures, though it won't cool you down much.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Le François. Our weather planner can help you explore destinations with more pleasant weather conditions.

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For a detailed overview over the year and the best time to visit Martinique, check out our Le François's climate page.

Le François Temperature in September

Min Temperature 26°C (79°F)  

Max Temperature 30°C (86°F)  

Water Temperature 29°C (84°F) *  

Chance of Rain 89%  

Precipitation 159 mm (6.3 in)  

Rainy days 27 days  

Humidity 85% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 219 hours *  

Percentage Sunshine *  

* Data from: Martinique, Martinique (10 KM, 6 Miles).

Daily Historical Temperatures

48-year average (1976-2025)

Based on our historical records, temperatures in Le François typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 24°C (75°F).

Average temperatures in September

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Historical weather for Le François in September

Browse day-by-day weather records for Le François spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

‹ 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ›

‹ January February March April May June July August September October November December ›

Le François historical weather extremes in September

Based on 26 years of weather observations (1999-2025), these are the most extreme conditions recorded in Le François.

• The warmest day in September was on September 12, 2023, with a maximum of 35°C (95°F).
• On September 18, 2008, Le François saw its coldest September day with temperatures maxing out at 26°C (79°F).
• Nighttime temperatures dropped to 21°C (70°F) on September 20, 2021, marking the coldest September night on record.

What to Wear in Le François in September

Warm but pleasant conditions in Le François in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Expect water temperatures of around 29°C (84°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Le François in September

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

Swimming

8/10

Cycling

7/10

Walking

7/10

Camping

7/10

Outdoor sports

7/10

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 Martinique, check out our Le François's climate page.

More climate data for Le François

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Le François climate overview or explore weather in Martinique.