September weather forecastBrinkleys, Cayman Islands
September
Weather in September
September delivers slightly cooled temperatures paired with a rainfall of 81mm (3.19"), slightly higher compared to August. Whilst the temperatures cool, the beauty of Brinkleys, Cayman Islands remains ignited by 12.2 hours of daylight daily. A gentle wind, blowing at around 17.2km/h (10.7mph), augments the comforting climatic conditions. September's weather in Brinkleys creates a stunning cocktail of warmth, showers and sun-illuminated landscapes.Temperature
A minor adjustment in Brinkleys's average high-temperature is noted with the start of September, touching a still moderately hot 29.4°C (84.9°F) from August's 29.7°C (85.5°F). In Brinkleys, a slight decrease from the daytime peak is noted during the month of September, with an average low-temperature of 28.5°C (83.3°F).Heat index
For most parts of September, the heat index is estimated at a hot 34°C (93.2°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Understand that the heat index values take into account shaded locations and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
September is the least humid month, with an average relative humidity of 74%.Rainfall
In September, in Brinkleys, the rain falls for 19.9 days. Throughout September, 81mm (3.19") of precipitation is accumulated. In Brinkleys, during the entire year, the rain falls for 241.1 days and collects up to 854mm (33.62") of precipitation.Daylight
In Brinkleys, Cayman Islands, the average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 06:09 and sunset at 18:39. On the last day of September, sunrise is at 06:15 and sunset at 18:13 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 value 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 in September interprets into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Brinkleys, 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
Brinkleys, 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
Brinkleys, 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
Brinkleys, 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
Brinkleys, 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
Brinkleys, 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
Brinkleys, Cayman Islands
- Average daylight in September: 12h and 12min
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
Brinkleys, 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
Brinkleys, 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
Brinkleys, 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
Brinkleys, 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).
