Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September is the warmest month in Long Swamp, with an average high-temperature of 28.9°C (84°F) and an average low-temperature of 27.7°C (81.9°F).Heat index
The average heat index in September is computed to be a hot 34°C (93.2°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
In September, the average relative humidity is 77%.Rainfall
In Long Swamp, during September, the rain falls for 23.4 days and regularly aggregates up to 110mm (4.33") of precipitation. Throughout the year, there are 262.1 rainfall days, and 835mm (32.87") of precipitation is accumulated.Daylight
In September, the average length of the day in Long Swamp is 12h and 14min.On the first day of the month, sunrise is at 06:03 and sunset at 18:32. On the last day of September, sunrise is at 06:08 and sunset at 18:07 AST.
Sunshine
In Long Swamp, British Virgin Islands, the average sunshine in September is 8.6h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index in Long Swamp, British Virgin Islands. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 7 during September morphs into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What time of the year is the hottest in Long Swamp?
How hot is September in Long Swamp?
What is the average humidity in September in Long Swamp?
How much does it rain in Long Swamp in September?
What is the average length of the day in September in Long Swamp?
When are sunrise and sunset in September in Long Swamp?
How many hours of sunshine does Long Swamp have in September?
What is the month with the highest UV index in Long Swamp?
What are the months with the lowest UV index in Long Swamp?
How high is the UV index in September in Long Swamp?
Average temperature in September
Long Swamp, British Virgin Islands
- Average high temperature in September: 28.9°C
The warmest month (with the highest average high temperature) is September (28.9°C).
The months with the lowest average high temperature are February and March (25.9°C).
- Average low temperature in September: 27.7°C
The month with the highest average low temperature is October (27.8°C).
The coldest month (with the lowest average low temperature) is March (24.7°C).
Average pressure in September
Long Swamp, British Virgin Islands
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is January (1016.7mbar).
The month with the lowest atmospheric pressure is October (1012.7mbar).
Average wind speed in September
Long Swamp, British Virgin Islands
- Average wind speed in September: 19.1km/h
The windiest month (with the highest average wind speed) is July (24.4km/h).
The calmest month (with the lowest average wind speed) is October (18.2km/h).
Average humidity in September
Long Swamp, British Virgin Islands
- Average humidity in September: 77%
The months with the highest relative humidity are June and July (79%).
The months with the lowest relative humidity are January, February, March, October and December (75%).
Average rainfall in September
Long Swamp, British Virgin Islands
- Average rainfall in September: 110mm
The wettest months (with the highest rainfall) are August and October (113mm).
The driest month (with the least rainfall) is February (28mm).
Average rainfall days in September
Long Swamp, British Virgin Islands
- Average rainfall days in September: 23.4 days
The month with the highest number of rainy days is November (24.9 days).
The month with the least rainy days is February (17.5 days).
Average daylight in September /
Average sunshine in September
Long Swamp, British Virgin Islands
- 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 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Long Swamp, British Virgin Islands
- Average sunshine days in September: 3.5 days
The month with the most sunshine days is February (7.1 days).
The month with the least sunshine days is August (1.7 days).
Average UV index in September
Long Swamp, British Virgin Islands
- 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
Long Swamp, British Virgin Islands
- Average cloud cover in September: 37
The months with the most cloud cover are May, July and August (Cloud cover 41).
The month with the least cloud cover is February (Cloud cover 34).
Average visibility in September
Long Swamp, British Virgin Islands
- 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).
Long Swamp, British Virgin Islands
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