September weather forecastMarigot, Saint Martin
September
Weather in September
September traditionally brings cooler weather to Marigot, Saint Martin, but still offers a warm climate with high temperature readings of 28.8°C (83.8°F). The weather pattern in September closely mirrors that of August but with a slight reduction in temperature lows. With the onset of October, a further decrease in temperature along with increased rainfall can be expected.Temperature
In Marigot, the highest average temperatures are observed in September, with a high of 28.8°C (83.8°F) and a low of 27.7°C (81.9°F).Heat index
September's mean heat index is calculated to be a tropical 34°C (93.2°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
The average relative humidity in September is 77%.Rainfall
In Marigot, in September, it is raining for 21.7 days, with typically 99mm (3.9") of accumulated precipitation. Throughout the year, there are 252.8 rainfall days, and 771mm (30.35") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 14min.On the first day of the month, sunrise is at 05:58 and sunset at 18:26. On the last day of September, sunrise is at 06:02 and sunset at 18:01 AST.
Sunshine
The average sunshine in September is 9.4h.UV index
January through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 7 in September leads to these recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Marigot, Saint Martin
- Average high temperature in September: 28.8°C
The warmest month (with the highest average high temperature) is September (28.8°C).
The month with the lowest average high temperature is March (25.8°C).
- Average low temperature in September: 27.7°C
The month with the highest average low temperature is September (27.7°C).
The coldest month (with the lowest average low temperature) is March (24.7°C).
Average pressure in September
Marigot, Saint Martin
- Average pressure in September: 1013.4mbar
The months with the highest atmospheric pressure are January and June (1016.6mbar).
The month with the lowest atmospheric pressure is October (1012.7mbar).
Average wind speed in September
Marigot, Saint Martin
- Average wind speed in September: 20.3km/h
The windiest month (with the highest average wind speed) is July (25.6km/h).
The calmest month (with the lowest average wind speed) is October (18.9km/h).
Average humidity in September
Marigot, Saint Martin
- Average humidity in September: 77%
The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are January, February, March and December (75%).
Average rainfall in September
Marigot, Saint Martin
- Average rainfall in September: 99mm
The wettest month (with the highest rainfall) is October (103mm).
The driest month (with the least rainfall) is February (19mm).
Average rainfall days in September
Marigot, Saint Martin
- Average rainfall days in September: 21.7 days
The month with the highest number of rainy days is August (25.3 days).
The month with the least rainy days is February (14.8 days).
Average daylight in September /
Average sunshine in September
Marigot, Saint Martin
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).
Average sunshine days in September
Marigot, Saint Martin
- Average sunshine days in September: 3.9 days
The month with the most sunshine days is March (9.9 days).
The month with the least sunshine days is August (1.7 days).
Average UV index in September
Marigot, Saint Martin
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October and November (UV index 7).
The month with the lowest UV index is December (UV index 6).
Average cloud cover in September
Marigot, Saint Martin
- Average cloud cover in September: 37
The months with the most cloud cover are May, June and August (Cloud cover 42).
The months with the least cloud cover are February and March (Cloud cover 34).
Average visibility in September
Marigot, Saint Martin
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
