September weather forecast
Spot Bay, Cayman Islands

Weather in September

September, the first month of the autumn in Spot Bay, is also a moderately hot month, with an average temperature varying between 28.5°C (83.3°F) and 29.4°C (84.9°F).

Temperature

In Spot Bay, the average high-temperature in September is essentially the same as in August - a still moderately hot 29.4°C (84.9°F). In September, the average low-temperature is 28.5°C (83.3°F).

Heat index

In September, the average heat index is computed to be a hot 34.5°C (94.1°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like clothing, pregnancy, metabolic differences, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The least humid month in Spot Bay, Cayman Islands, is September, with an average relative humidity of 74%.

Rainfall

In Spot Bay, during 19.9 rainfall days, 81mm (3.19") of precipitation is typically accumulated. Throughout the year, there are 241.1 rainfall days, and 854mm (33.62") of precipitation is accumulated.

Daylight

In September, the average length of the day in Spot Bay is 12h and 15min.
On the first day of the month, sunrise is at 06:03 and sunset at 18:34. On the last day of September, in Spot Bay, sunrise is at 06:09 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 the ordinary person.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Spot Bay?

In Spot Bay, Cayman Islands, in September, the average high-temperature is 29.4°C (84.9°F), and the average low-temperature is 28.5°C (83.3°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in September is computed to be 34.5°C (94.1°F).

What is the least humid month in Spot Bay?

With an average relative humidity of 74%, September is the least humid month.

What is the average humidity in September in Spot Bay?

In Spot Bay, Cayman Islands, the average relative humidity in September is 74%.

How much does it rain in Spot Bay in September?

In Spot Bay, in September, during 19.9 rainfall days, 81mm (3.19") of precipitation is typically accumulated.

What is the average length of the day in September in Spot Bay?

In Spot Bay, the average day length in September is 12h and 15min.

What time are sunrise and sunset in September in Spot Bay?

In September, on the first day of the month, sunrise is at 06:03 and sunset at 18:34. On the last day of the month, in Spot Bay, sunrise is at 06:09 and sunset at 18:08 EST.

How long on average sun shines in September in Spot Bay?

The average sunshine duration in September in Spot Bay, Cayman Islands, is 9h.

What are the months with the highest UV index in Spot Bay?

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

What is the UV index reading in September in Spot Bay?

The average daily maximum UV index in September in Spot Bay, Cayman Islands, is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.

Average temperature in September
Spot Bay, Cayman Islands

Average temperature in September - Spot Bay, 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
Spot Bay, Cayman Islands

Average pressure in September - Spot Bay, 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
Spot Bay, Cayman Islands

Average wind speed in September - Spot Bay, 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
Spot Bay, Cayman Islands

Average humidity in September - Spot Bay, 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
Spot Bay, Cayman Islands

Average rainfall in September - Spot Bay, 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
Spot Bay, Cayman Islands

Average rainfall days in September - Spot Bay, 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
Spot Bay, Cayman Islands

Average daylight in September / Average sunshine in September - Spot Bay, Cayman Islands
  • Average daylight in September: 12h and 15min

The month with the longest days is June (Average daylight: 13h and 19min).
The month with the shortest days is December (Average daylight: 10h and 58min).

  • 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
Spot Bay, Cayman Islands

Average sunshine days in September - Spot Bay, 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
Spot Bay, Cayman Islands

Average UV index in September - Spot Bay, 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
Spot Bay, Cayman Islands

Average cloud cover in September - Spot Bay, 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
Spot Bay, Cayman Islands

Average visibility in September - Spot Bay, 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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