Le Diamant Weather in September
With daytime temperatures of 29°C (84°F) and nighttime lows of 26°C (79°F), September in Le Diamant brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 151 mm (5.9 in) falls on average.
Rainfall in Le Diamant in September
Looking at the last 30 years, the data shows about 27 days with rain, averaging 151 mm (5.9 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Le Diamant in September
In September, expect high temperatures in Le Diamant, with highs of 29°C (84°F) and lows of 26°C (79°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. 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 Diamant in September
The days are predominantly sunny, with an estimated total of around 219 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Wind Speed in Le Diamant in September
September sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.
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.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, June and December typically offer the best weather for Le Diamant.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Martinique, check out our Le Diamant's climate page.
Le Diamant Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Water Temperature
29°C (84°F) *
Chance of Rain
90%
Precipitation
151 mm (5.9 in)
Rainy days
27 days
Humidity
85% *
Windspeed
4 m/s (8 knots) *
Sunshine
219 hours *
Percentage Sunshine
*
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Le Diamant typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Historical weather for Le Diamant in September
Browse day-by-day weather records for Le Diamant spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Le Diamant historical weather extremes in September
Based on weather observations in Le Diamant between 1999 and 2025, these are the recorded extremes during September.
- Le Diamant recorded its highest September temperature of 35°C (95°F) on September 12, 2023.
- The coldest September day was on September 18, 2008, with a maximum of 26°C (79°F).
- Le Diamant registered its coldest September night on September 20, 2021, with temperatures dropping to 21°C (70°F).
Best Places in Martinique in September
Find out more about the weather in Martinique and which places have the best travel conditions in this month. See all of Martinique in September →
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What to Wear in Le Diamant in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. The water temperature sits at about 29°C (84°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Le Diamant in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Martinique, check out our Le Diamant's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Le Diamant climate overview or explore weather in Martinique.
