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
Sand Bluff, Cayman Islands, experiences an average high-temperature of a still moderately hot 29.4°C (84.9°F) in September, marking an insignificant shift from 29.7°C (85.5°F) in August. Sand Bluff, during September nights, records a temperature marginally cooler than the daytime average, at a still moderately hot 28.5°C (83.3°F).Heat index
During September, the heat index is estimated at a tropical 34°C (93.2°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Realize that the values for the heat index are set for shaded places and light winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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
September is the least humid month in Sand Bluff, Cayman Islands, 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. In Sand Bluff, during the entire year, the rain falls for 241.1 days and collects up to 854mm (33.62") of precipitation.Daylight
In September, the average length of the day is 12h and 14min.On the first day of September, sunrise is at 06:09 and sunset at 18:38. On the last day of the month, sunrise is at 06:14 and sunset at 18:13 EST.
Sunshine
In Sand Bluff, the average sunshine in September is 9h.UV index
The months with the highest UV index in Sand Bluff are February through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 7 in September transforms into this advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
Is it hot in Sand Bluff during September?
What is the least humid month in Sand Bluff?
What is the average humidity in September in Sand Bluff?
How much does it rain in Sand Bluff in September?
What is the average length of the day in September in Sand Bluff?
What time are sunrise and sunset in September in Sand Bluff?
How long on average sun shines in September in Sand Bluff?
What is the month with the highest UV index in Sand Bluff?
How high is the UV index in September in Sand Bluff?
Average temperature in September
Sand Bluff, 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).
Average pressure in September
Sand Bluff, 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).
Average wind speed in September
Sand Bluff, 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).
Average humidity in September
Sand Bluff, 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%).
Average rainfall in September
Sand Bluff, 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).
Average rainfall days in September
Sand Bluff, 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).
Average daylight in September /
Average sunshine in September
Sand Bluff, 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).
Average sunshine days in September
Sand Bluff, 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).
Average UV index in September
Sand Bluff, 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).
Average cloud cover in September
Sand Bluff, 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).
Average visibility in September
Sand Bluff, 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).
Sand Bluff, Cayman Islands
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