September weather forecast
Banksville, Cayman Islands

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Weather in September

As autumn approaches, September brings a marginal dip in average high temperatures. The tropical charm is further enhanced by the mild reduction in temperature and a constant UV index. An increase in rainfall up to 81mm (3.19") is seen in this month, marking the onset of the wetter season. Days grow shorter, with daylight lasting for about 12.2 hours and 9 hours of sunshine on average. A slight downward trend in atmospheric pressure is also observed.

Temperature

Banksville's shift from August to September is accompanied by an average high-temperature of a still warm 29.4°C (84.9°F), a slight deviation from 29.7°C (85.5°F). Nighttime, during September, brings an average low of 28.5°C (83.3°F), a modest reduction from the day's peak.

Heat index

September's mean heat index is appraised at a tropical 34°C (93.2°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

The least humid month in Banksville is September, with an average relative humidity of 74%.

Rainfall

In September, the rain falls for 19.9 days. Throughout September, 81mm (3.19") of precipitation is accumulated. Throughout the year, in Banksville, there are 241.1 rainfall days, and 854mm (33.62") of precipitation is accumulated.

Daylight

In Banksville, the average length of the day in September is 12h and 15min.
On the first day of September in Banksville, sunrise is at 06:04 and sunset at 18:34. On the last day of the month, sunrise is at 06:10 and sunset at 18:08 EST.

Sunshine

The average sunshine in September is 9h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

How hot is September in Banksville?

The average high-temperature, in September, in Banksville, is 29.4°C (84.9°F), while the average low-temperature is 28.5°C (83.3°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is appraised at 34°C (93.2°F).

What is the least humid month in Banksville?

The least humid month is September, with an average relative humidity of 74%.

What is the average humidity in September in Banksville?

In September, the average relative humidity is 74%.

How many days does it rain in September in Banksville?

In Banksville, Cayman Islands, in September, it is raining for 19.9 days, with typically 81mm (3.19") of accumulated precipitation.

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

In September, the average day length in Banksville, Cayman Islands, is 12h and 15min.

When is the sunrise / sunset in September in Banksville?

In September, on the first day of the month, sunrise is at 06:04 and sunset at 18:34. On the last day of the month, sunrise is at 06:10 and sunset at 18:08 EST.

How long on average sun shines in September in Banksville?

In September, the average sunshine duration is 9h.

What are the months with the highest UV index in Banksville?

The months with the highest UV index are February through December, with an average maximum UV index of 7.

How high is the UV index in September in Banksville?

The average daily maximum UV index in September in Banksville is 7. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.

Average temperature in September
Banksville, Cayman Islands

Average temperature in September - Banksville, Cayman Islands
  • Average high temperature in September: 29.4°C

The warmest month (with the highest average high temperature) is August (29.7°C).
The month with the lowest average high temperature is February (26.2°C).

  • Average low temperature in September: 28.5°C

The month with the highest average low temperature is August (28.6°C).
The coldest month (with the lowest average low temperature) is March (24.9°C).

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Average pressure in September
Banksville, Cayman Islands

Average pressure in September - Banksville, Cayman Islands
  • Average pressure in September: 1012.4mbar

The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is October (1011.7mbar).

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Average wind speed in September
Banksville, Cayman Islands

Average wind speed in September - Banksville, Cayman Islands
  • Average wind speed in September: 17.2km/h

The windiest month (with the highest average wind speed) is December (26.4km/h).
The calmest month (with the lowest average wind speed) is September (17.2km/h).

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Average humidity in September
Banksville, Cayman Islands

Average humidity in September - Banksville, Cayman Islands
  • Average humidity in September: 74%

The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is September (74%).

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Average rainfall in September
Banksville, Cayman Islands

Average rainfall in September - Banksville, Cayman Islands
  • Average rainfall in September: 81mm

The wettest month (with the highest rainfall) is October (159mm).
The driest month (with the least rainfall) is March (24mm).

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Average rainfall days in September
Banksville, Cayman Islands

Average rainfall days in September - Banksville, Cayman Islands
  • Average rainfall days in September: 19.9 days

The month with the highest number of rainy days is October (26.5 days).
The month with the least rainy days is March (16 days).

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Average daylight in September /
Average sunshine in September
Banksville, Cayman Islands

Average daylight in September / Average sunshine in September - Banksville, Cayman Islands
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in September: 9h and 0min

The months with the most sunshine are May and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

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Average sunshine days in September
Banksville, Cayman Islands

Average sunshine days in September - Banksville, Cayman Islands
  • Average sunshine days in September: 7.4 days

The month with the most sunshine days is March (9.3 days).
The month with the least sunshine days is November (2.5 days).

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Average UV index in September
Banksville, Cayman Islands

Average UV index in September - Banksville, Cayman Islands
  • Average UV index in September: 7

The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).

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Average cloud cover in September
Banksville, Cayman Islands

Average cloud cover in September - Banksville, Cayman Islands
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is April (Cloud cover 28).

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Average visibility in September
Banksville, Cayman Islands

Average visibility in September - Banksville, Cayman 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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Banksville, Cayman Islands

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