September weather forecast and climate
Marigot, Saint Martin

The first month of the autumn, September, is also a moderately hot month in Marigot, Saint Martin, with average temperature varying between 27.7°C (81.9°F) and 28.8°C (83.8°F).

Temperature

September is the warmest month, with an average high-temperature of 28.8°C (83.8°F) and an average low-temperature of 27.7°C (81.9°F).

Heat index

In September, the average heat index is evaluated at a hot 33.6°C (92.5°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, differences in body mass, height, and shape, clothing), and activity. 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In September, the average relative humidity in Marigot is 77%.

Rainfall

In September, the rain falls for 21.7 days. Throughout September, 99mm (3.9") of precipitation is accumulated. In Marigot, Saint Martin, during the entire year, the rain falls for 252.8 days and collects up to 771mm (30.35") of precipitation.

Daylight

The average length of the day in Marigot is 12.2h.

Sunshine

In September, the average sunshine in Marigot is 9.4h.

UV index

Months with the highest UV index in Marigot are January through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.