September weather forecast
Hannah, British Virgin Islands

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Weather in September

September brings a hint of relief as the summer seething gradually begins to subside. The swell in temperature observed in August shows a downward trend this month. Regular showers mark their presence amid the dramatic play of clouds and sun. Reliable trade winds continue to weave a web of comfort. The decrease in temperature, backdropped by lush landscapes, makes this month quite a spectacle.

Temperature

September, known for its average high temperature of 28.9°C (84°F) and an average low temperature of 27.7°C (81.9°F), is the warmest month in Hannah.

Heat index

September's heat index is appraised at a tropical 34°C (93.2°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Hannah, during September, the rain falls for 23.4 days and regularly aggregates up to 110mm (4.33") of precipitation. Throughout the year, in Hannah, there are 262.1 rainfall days, and 835mm (32.87") of precipitation is accumulated.

Daylight

The average length of the day in September in Hannah is 12h and 14min.
On the first day of the month, sunrise is at 06:04 and sunset at 18:32. On the last day of September, sunrise is at 06:08 and sunset at 18:07 AST.

Sunshine

In September, the average sunshine is 8.6h.

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 in Hannah are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

What are the warmest months in Hannah?

Hannah's warmest temperatures are experienced in September, with average high temperatures of 28.9°C (84°F) and lows of 27.7°C (81.9°F).

How hot does it get in Hannah in September?

The average high-temperature, in September, in Hannah, is 28.9°C (84°F), while the average low-temperature is 27.7°C (81.9°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is appraised at 34°C (93.2°F).

What is the average humidity in September in Hannah?

In Hannah, the average relative humidity in September is 77%.

How much does it rain in Hannah in September?

In Hannah, British Virgin Islands, in September, during 23.4 rainfall days, 110mm (4.33") of precipitation is typically accumulated.

What is the average length of the day in September in Hannah?

In Hannah, the average day length in September is 12h and 14min.

When are sunrise and sunset in September in Hannah?

On the first day of September, sunrise is at 06:04 and sunset at 18:32. On the last day of the month, sunrise is at 06:08 and sunset at 18:07 AST.

How long on average sun shines in September in Hannah?

The average sunshine duration in September in Hannah, British Virgin Islands, is 8.6h.

What is the month with the highest UV index in Hannah?

The months with the highest UV index in Hannah, British Virgin Islands, are January through December, with an average maximum UV index of 7.

What are the months with the lowest UV index in Hannah?

January through December, with an average maximum UV index of 7, are months with the lowest UV index in Hannah.

What is the UV index intensity in September in Hannah?

In Hannah, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.

Average temperature in September
Hannah, British Virgin Islands

Average temperature in September - Hannah, 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).

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Average pressure in September
Hannah, British Virgin Islands

Average pressure in September - Hannah, 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).

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Average wind speed in September
Hannah, British Virgin Islands

Average wind speed in September - Hannah, 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).

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Average humidity in September
Hannah, British Virgin Islands

Average humidity in September - Hannah, 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%).

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Average rainfall in September
Hannah, British Virgin Islands

Average rainfall in September - Hannah, 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).

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Average rainfall days in September
Hannah, British Virgin Islands

Average rainfall days in September - Hannah, 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).

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Average daylight in September /
Average sunshine in September
Hannah, British Virgin Islands

Average daylight in September / Average sunshine in September - Hannah, 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).

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Average sunshine days in September
Hannah, British Virgin Islands

Average sunshine days in September - Hannah, 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).

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Average UV index in September
Hannah, British Virgin Islands

Average UV index in September - Hannah, 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).

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Average cloud cover in September
Hannah, British Virgin Islands

Average cloud cover in September - Hannah, 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).

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Average visibility in September
Hannah, British Virgin Islands

Average visibility in September - Hannah, 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).

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Hannah, British Virgin Islands

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