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
September
Weather in September
Temperature
The transition into September shows a subtle variation to a still hot 32.4°C (90.3°F) from August's 33.5°C (92.3°F) in the average high-temperature. Nightly temperatures in Cayo Redondo drop to an average low of 22.7°C (72.9°F) in September.Heat index
The heat index value for September is computed to be a burning hot 46°C (114.8°F). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
The average relative humidity in September is 80%.Rainfall
The month with the most rainfall is September, when the rain falls for 26.1 days and typically aggregates up to 125mm (4.92") of precipitation.Daylight
In Cayo Redondo, the average length of the day in September is 12h and 15min.On the first day of the month, sunrise is at 06:52 and sunset at 19:23. On the last day of September, sunrise is at 06:58 and sunset at 18:56 CDT.
Sunshine
In September, the average sunshine in Cayo Redondo is 10.8h.UV index
The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 7 in September translates into these instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Cayo Redondo in September?
What is the average humidity in September in Cayo Redondo?
What is the rainiest month in Cayo Redondo?
How many days does it rain in September in Cayo Redondo?
What is the average length of the day in September in Cayo Redondo?
When are sunrise and sunset in September in Cayo Redondo?
How long on average sun shines in September in Cayo Redondo?
What is the month with the highest UV index in Cayo Redondo?
What is the UV index intensity in September in Cayo Redondo?
Average temperature in September
Cayo Redondo, Cuba
- Average high temperature in September: 32.4°C
The warmest month (with the highest average high temperature) is August (33.5°C).
The months with the lowest average high temperature are January and December (28.7°C).
- Average low temperature in September: 22.7°C
The month with the highest average low temperature is August (23.3°C).
The coldest months (with the lowest average low temperature) are January and March (19.3°C).
Average pressure in September
Cayo Redondo, Cuba
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is January (1016.9mbar).
The month with the lowest atmospheric pressure is October (1012.2mbar).
Average wind speed in September
Cayo Redondo, Cuba
- Average wind speed in September: 5.8km/h
The windiest months (with the highest average wind speed) are February and March (8km/h).
The calmest months (with the lowest average wind speed) are June and September (5.8km/h).
Average humidity in September
Cayo Redondo, Cuba
- Average humidity in September: 80%
The months with the highest relative humidity are October and November (83%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Cayo Redondo, Cuba
- Average rainfall in September: 125mm
The wettest month (with the highest rainfall) is September (125mm).
The driest month (with the least rainfall) is February (14mm).
Average rainfall days in September
Cayo Redondo, Cuba
- Average rainfall days in September: 26.1 days
The month with the highest number of rainy days is September (26.1 days).
The month with the least rainy days is February (9.7 days).
Average daylight in September /
Average sunshine in September
Cayo Redondo, Cuba
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The months with the least sunshine are January and November (Average sunshine: 6h and 42min).
Average sunshine days in September
Cayo Redondo, Cuba
- Average sunshine days in September: 2.5 days
The month with the most sunshine days is March (16.8 days).
The month with the least sunshine days is September (2.5 days).
Average UV index in September
Cayo Redondo, Cuba
- Average UV index in September: 7
The months with the highest UV index are March, April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, October, November and December (UV index 6).
Average cloud cover in September
Cayo Redondo, Cuba
- Average cloud cover in September: 32
The month with the most cloud cover is November (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Cayo Redondo, Cuba
- Average visibility in September: 8km
The months with the highest visibility are February, March and April (9km).
The months with the lowest visibility are October, November and December (7km).
