September weather forecastBelvedere, Sint Maarten
September
Weather in September
September in Belvedere ushers in an almost indistinguishable weather pattern to August, save for a slight drop in wind speed. It mimics August's rainfall, making it a very wet month with 100mm (3.94") of rainfall. However, despite the rain, the cloud coverage remains constant and the UV index drops to 6, the lowest of the year. A slight reduction in daylight hours from August to 12.2 hours is observed. Both high and low temperatures stay in line with the trend of the past few months.Temperature
In Belvedere, September is the month with the highest recorded average temperatures, measuring a high of 28.8°C (83.8°F) and a low of 27.6°C (81.7°F).Heat index
September's average heat index is computed to be a hot 34°C (93.2°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
In Belvedere, the average relative humidity in September is 77%.Rainfall
In Belvedere, Sint Maarten, during September, the rain falls for 22.2 days and regularly aggregates up to 100mm (3.94") of precipitation. Throughout the year, in Belvedere, there are 253.3 rainfall days, and 772mm (30.39") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 05:57 and sunset at 18:25. On the last day of September, sunrise is at 06:02 and sunset at 18:01 AST.
Sunshine
In Belvedere, Sint Maarten, the average sunshine in September is 9.2h.UV index
The months with the highest UV index in Belvedere are January through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 7 during September, leads to the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Belvedere, Sint Maarten
- 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: 27.6°C
The months with the highest average low temperature are August and September (27.6°C).
The coldest month (with the lowest average low temperature) is March (24.7°C).
Average pressure in September
Belvedere, Sint Maarten
- 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
Belvedere, Sint Maarten
- 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
Belvedere, Sint Maarten
- 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
Belvedere, Sint Maarten
- Average rainfall in September: 100mm
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
Belvedere, Sint Maarten
- Average rainfall days in September: 22.2 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
Belvedere, Sint Maarten
- 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 12min
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
Belvedere, Sint Maarten
- Average sunshine days in September: 3.8 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
Belvedere, Sint Maarten
- 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
Belvedere, Sint Maarten
- Average cloud cover in September: 39
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
Belvedere, Sint Maarten
- 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).
