September weather forecast
Mary's Fancy, Sint Maarten

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Weather in September

The weather in September meets with a mild regression in temperature and a slight relief from the heavy rainfall of August. However, 97mm (3.82") of precipitation spread across 22 days does rank it among the rainier months. Essentially, September offers a subtle move towards averting the extreme summer conditions, yet the high hydration in the form of humidity and rainfall still presides. Sunshine hours might take a slight hit, yet it compensates through the length of daylight hours. September's weather conditions depict the slow transition from the hot and wet summer to the slightly cooler autumn.

Temperature

Mary's Fancy's temperatures tend to reach their peak averages in September, with a high of 28.9°C (84°F) and a low of 27.7°C (81.9°F).

Heat index

September's average heat index is estimated at a hot 34°C (93.2°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
In reference to the heat index, it's for places in shade and with a slight wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Mary's Fancy, Sint Maarten, in September, it is raining for 22.3 days, with typically 97mm (3.82") of accumulated precipitation. In Mary's Fancy, during the entire year, the rain falls for 252.5 days and collects up to 772mm (30.39") of precipitation.

Daylight

In Mary's Fancy, Sint Maarten, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 05:58 and sunset at 18:26. On the last day of the month, sunrise is at 06:02 and sunset at 18:01 AST.

Sunshine

In September, the average sunshine is 9.2h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. 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. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Frequently asked questions

What are the warmest months in Mary's Fancy?

Mary's Fancy's temperatures peak on average in September, reaching 28.9°C (84°F) at their highest and 27.7°C (81.9°F) at their lowest.

How hot does it get in Mary's Fancy in September?

During September, Mary's Fancy experiences an average high-temperature of 28.9°C (84°F) and a low-temperature of 27.7°C (81.9°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in September is estimated at 34°C (93.2°F).

What is the average humidity in September in Mary's Fancy?

In September, the average relative humidity in Mary's Fancy, Sint Maarten, is 77%.

How many days does it rain in September in Mary's Fancy?

In Mary's Fancy, in September, during 22.3 rainfall days, 97mm (3.82") of precipitation is typically accumulated.

How many hours of daylight does Mary's Fancy have in September?

The average day length in September in Mary's Fancy, Sint Maarten, is 12h and 14min.

What time are sunrise and sunset in September in Mary's Fancy?

On the first day of September in Mary's Fancy, Sint Maarten, sunrise is at 05:58 and sunset at 18:26. On the last day of the month, sunrise is at 06:02 and sunset at 18:01 AST.

How long on average sun shines in September in Mary's Fancy?

The average sunshine duration in September is 9.2h.

When is the highest UV index in Mary's Fancy?

The months with the highest UV index in Mary's Fancy, Sint Maarten, are January through December, with an average maximum UV index of 7.

What is the month with the lowest UV index in Mary's Fancy?

January through December, with an average maximum UV index of 7, are months with the lowest UV index in Mary's Fancy.

What is the UV index reading in September in Mary's Fancy?

In Mary's Fancy, Sint Maarten, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.

Average temperature in September
Mary's Fancy, Sint Maarten

Average temperature in September - Mary
  • Average high temperature in September: 28.9°C

The warmest month (with the highest average high temperature) is September (28.9°C).
The month with the lowest average high temperature is March (25.8°C).

  • Average low temperature in September: 27.7°C

The months with the highest average low temperature are August and September (27.7°C).
The coldest month (with the lowest average low temperature) is March (24.7°C).

Average pressure in September
Mary's Fancy, Sint Maarten

Average pressure in September - Mary
  • 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
Mary's Fancy, Sint Maarten

Average wind speed in September - Mary
  • 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 (20.1km/h).

Average humidity in September
Mary's Fancy, Sint Maarten

Average humidity in September - Mary
  • 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
Mary's Fancy, Sint Maarten

Average rainfall in September - Mary
  • Average rainfall in September: 97mm

The wettest month (with the highest rainfall) is October (107mm).
The driest month (with the least rainfall) is February (19mm).

Average rainfall days in September
Mary's Fancy, Sint Maarten

Average rainfall days in September - Mary
  • Average rainfall days in September: 22.3 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
Mary's Fancy, Sint Maarten

Average daylight in September / Average sunshine in September - Mary
  • Average daylight in September: 12h and 1min

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 1min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is October (Average sunshine: 6h and 24min).

Average sunshine days in September
Mary's Fancy, Sint Maarten

Average sunshine days in September - Mary
  • Average sunshine days in September: 3.7 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
Mary's Fancy, Sint Maarten

Average UV index in September - Mary
  • Average UV index in September: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in September
Mary's Fancy, Sint Maarten

Average cloud cover in September - Mary
  • 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
Mary's Fancy, Sint Maarten

Average visibility in September - Mary
  • 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).

Mary's Fancy, Sint Maarten

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