September weather forecast
Sainte-Luce, Martinique

September, the first month of the autumn in Sainte-Luce, is still a warm month, with an average temperature fluctuating between 29.4°C (84.9°F) and 27.3°C (81.1°F).

Temperature

September is the warmest month, with an average high-temperature of 29.4°C (84.9°F) and an average low-temperature of 27.3°C (81.1°F).

Heat index

The average heat index in September is estimated at a very hot 35°C (95°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, pregnancy, differences in body mass, height, and shape, and metabolic differences affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Sainte-Luce, the average relative humidity in September is 75%.

Rainfall

In September, in Sainte-Luce, Martinique, the rain falls for 21.1 days. Throughout September, 81mm (3.19") of precipitation is accumulated. In Sainte-Luce, during the entire year, the rain falls for 251.6 days and collects up to 667mm (26.26") of precipitation.

Sea temperature

The month with the warmest seawater is September, with an average sea temperature of 29.4°C (84.9°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Sainte-Luce, 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, in Sainte-Luce, sunrise is at 05:53 and sunset at 17:54 AST.

Sunshine

In Sainte-Luce, the average sunshine in September is 10.1h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Sainte-Luce. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.