September weather forecast
Le François, Martinique

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Weather in September

September’s weather in Le François, Martinique, continues to display its tropical character. An enticing sea temperature of 29.4°C (84.9°F) steals attention, establishing an aquatic paradise for surfers, divers, fishermen, and casual swimmers. Extended rains nourish wildlife, heighten river levels, and prop up a brightly painted flora curtain across the city. Despite significant rain, the sunshine duration remains at a generous 7 hours, ensuring that the daylight hours offer plenty of room for exploration. Individuals with a fondness for nature transform into captivated spectators, observing the grandeur of weather's interplay with the elements.

Temperature

During May through October, Le François experiences its warmest period, with an average high-temperature of 30°C (86°F).

Rainfall

In Le François, in September, it is raining for 27 days, with typically 219mm (8.62") of accumulated precipitation. Throughout the year, there are 221 rainfall days, and 1960mm (77.17") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 29.4°C (84.9°F), September is the month with the warmest seawater.
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.

Daylight

The average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 05:51 and sunset at 18:15. On the last day of September, sunrise is at 05:53 and sunset at 17:53 AST.

Sunshine

The months with the least sunshine are September and October, with an average of 7h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an excessive health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 12 suggests this advice:
Take every vital safeguard, as unprotected skin and eyes may suffer burns rapidly. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Enhance your sun protection with tightly woven, yet airy clothing. Sunscreen of at least SPF 30 should be applied generously and reapplied often on overcast days, especially post swim or outdoor exercise. Alert! UV radiation becomes sharper due to reflections from sand and water.

Frequently asked questions

What time of the year is the hottest?

May through October represent the warmest period, with an average high-temperature of 30°C (86°F).

How hot is September in Le François?

The high-temperature, in September, in Le François, is 30°C (86°F), while the low-temperature averages to 24°C (75.2°F).

How many days does it rain in September?

In Le François, in September, during 27 rainfall days, 219mm (8.62") of precipitation is typically accumulated.

What is the month with the warmest sea water?

With an average sea temperature of 29.4°C (84.9°F), September is the month with the warmest seawater.

What is the water temperature in September?

In Le François, in September, the average water temperature is 29.4°C (84.9°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in September?

In Le François, the average day length in September is 12h and 13min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 05:51 and sunset at 18:15. On the last day of the month, in Le François, sunrise is at 05:53 and sunset at 17:53 AST.

What is the month with the least sunshine?

The months with the least sunshine are September and October, with an average of 7h of sunshine.

How long on average sun shines in September?

In Le François, Martinique, the average sunshine duration in September is 7h.

What is the month with the highest UV index?

March through September, with an average maximum UV index of 12, are months with the highest UV index.

What is the UV index reading in September?

In Le François, the average daily maximum UV index in September is 12. A UV Index of 11, and more, symbolizes an excessive health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Le François, Martinique

Average temperature in September - Le François, Martinique
  • Average high temperature in September: 30°C

The warmest months (with the highest average high temperature) are May, June, July, August, September and October (30°C).
The months with the lowest average high temperature are January, February and December (28°C).

  • Average low temperature in September: 24°C

The months with the highest average low temperature are May, June, July, August and September (24°C).
The coldest month (with the lowest average low temperature) is February (21°C).

Average rainfall in September
Le François, Martinique

Average rainfall in September - Le François, Martinique
  • Average rainfall in September: 219mm

The wettest month (with the highest rainfall) is November (270mm).
The driest month (with the least rainfall) is March (62mm).

Average rainfall days in September
Le François, Martinique

Average rainfall days in September - Le François, Martinique
  • Average rainfall days in September: 27 days

The month with the highest number of rainy days is September (27 days).
The month with the least rainy days is April (12 days).

Average sea temperature in September
Le François, Martinique

Average sea temperature in September - Le François, Martinique
  • Average sea temperature in September: 29.4°C

The best month for swimming (with the highest average sea temperature) is September (29.4°C).
The coldest month (with the lowest average sea temperature) is February (26.9°C).

Average daylight in September /
Average sunshine in September
Le François, Martinique

Average daylight in September / Average sunshine in September - Le François, Martinique
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in September: 7h

The months with the most sunshine are January, February, March, April, May, June, July, August, November and December (Average sunshine: 8h).
The months with the least sunshine are September and October (Average sunshine: 7h).

Average UV index in September
Le François, Martinique

Average UV index in September - Le François, Martinique
  • Average UV index in September: 12

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

Le François, Martinique

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