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
Temperature records mark September as the warmest month, with highs averaging 28.8°C (83.8°F) and lows at 27.7°C (81.9°F).Heat index
September's heat index is evaluated at a hot 34°C (93.2°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
In September, the average relative humidity in Island Harbour is 77%.Rainfall
In Island Harbour, during September, the rain falls for 19.3 days and regularly aggregates up to 78mm (3.07") of precipitation. Throughout the year, in Island Harbour, there are 247 rainfall days, and 711mm (27.99") 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
The average sunshine in September is 9.5h.UV index
The months with the highest UV index in Island Harbour are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Island Harbour. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full 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.
Frequently asked questions
What is the warmest month in Island Harbour?
Is it hot in Island Harbour during September?
What is the average humidity in September in Island Harbour?
How many days does it rain in September in Island Harbour?
How many hours of daylight does Island Harbour have in September?
What time are sunrise and sunset in September in Island Harbour?
How long on average sun shines in September in Island Harbour?
What are the months with the highest UV index in Island Harbour?
What is the month with the lowest UV index in Island Harbour?
What is the UV index reading in September in Island Harbour?
Average temperature in September
Island Harbour, Anguilla
- Average high temperature in September: 28.8°C
The warmest month (with the highest average high temperature) is September (28.8°C).
The months with the lowest average high temperature are February and March (25.8°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
Island Harbour, Anguilla
- Average pressure in September: 1013.5mbar
The months with the highest atmospheric pressure are January, February and June (1016.6mbar).
The month with the lowest atmospheric pressure is October (1012.8mbar).
Average wind speed in September
Island Harbour, Anguilla
- Average wind speed in September: 20.4km/h
The windiest month (with the highest average wind speed) is July (25.7km/h).
The calmest month (with the lowest average wind speed) is October (19.2km/h).
Average humidity in September
Island Harbour, Anguilla
- 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
Island Harbour, Anguilla
- Average rainfall in September: 78mm
The wettest month (with the highest rainfall) is October (89mm).
The driest month (with the least rainfall) is February (31mm).
Average rainfall days in September
Island Harbour, Anguilla
- Average rainfall days in September: 19.3 days
The month with the highest number of rainy days is November (23.5 days).
The month with the least rainy days is June (16.9 days).
Average daylight in September /
Average sunshine in September
Island Harbour, Anguilla
- 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 3min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Island Harbour, Anguilla
- Average sunshine days in September: 7.5 days
The months with the most sunshine days are April and October (8.3 days).
The month with the least sunshine days is July (3.9 days).
Average UV index in September
Island Harbour, Anguilla
- 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
Island Harbour, Anguilla
- Average cloud cover in September: 37
The months with the most cloud cover are May, June, July and August (Cloud cover 41).
The months with the least cloud cover are February and March (Cloud cover 35).
Average visibility in September
Island Harbour, Anguilla
- 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).
Island Harbour, Anguilla
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