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
Santo Tomás's September reports an average high-temperature of a still hot 31.3°C (88.3°F), exhibiting a minor difference from August. Santo Tomás's September nights cool down to an average low-temperature of 24.6°C (76.3°F).Heat index
For September, the heat index is calculated to be a blisteringly hot 42°C (107.6°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, 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 are particularly important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.
Humidity
In Santo Tomás, the average relative humidity in September is 80%.Rainfall
In Santo Tomás, Cuba, in September, it is raining for 21.3 days, with typically 76mm (2.99") of accumulated precipitation. Throughout the year, there are 181.5 rainfall days, and 590mm (23.23") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 16min.On the first day of September, sunrise is at 06:58 and sunset at 19:31. On the last day of the month, sunrise is at 07:06 and sunset at 19:03 CDT.
Sunshine
The average sunshine in September is 9.6h.UV index
March through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 7 during September leads to these advisories:
Take precautions against overexposure. Fair-skinned people may get burned 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. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Santo Tomás have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Santo Tomás have in September?
When is the highest UV index in Santo Tomás?
How high is the UV index in September in Santo Tomás?
Average temperature in September
Santo Tomás, Cuba
- Average high temperature in September: 31.3°C
The warmest month (with the highest average high temperature) is August (32.1°C).
The month with the lowest average high temperature is January (27°C).
- Average low temperature in September: 24.6°C
The month with the highest average low temperature is August (25.5°C).
The coldest month (with the lowest average low temperature) is January (20.3°C).
Average pressure in September
Santo Tomás, Cuba
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).
Average wind speed in September
Santo Tomás, Cuba
- Average wind speed in September: 10km/h
The windiest month (with the highest average wind speed) is November (13.9km/h).
The calmest month (with the lowest average wind speed) is June (9.8km/h).
Average humidity in September
Santo Tomás, Cuba
- Average humidity in September: 80%
The month with the highest relative humidity is October (81%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Santo Tomás, Cuba
- Average rainfall in September: 76mm
The wettest month (with the highest rainfall) is October (91mm).
The driest months (with the least rainfall) are February and March (14mm).
Average rainfall days in September
Santo Tomás, Cuba
- Average rainfall days in September: 21.3 days
The months with the highest number of rainy days are August and October (21.7 days).
The month with the least rainy days is February (6.6 days).
Average daylight in September /
Average sunshine in September
Santo Tomás, Cuba
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is November (Average sunshine: 6h and 54min).
Average sunshine days in September
Santo Tomás, Cuba
- Average sunshine days in September: 7.5 days
The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is August (6.4 days).
Average UV index in September
Santo Tomás, Cuba
- Average UV index in September: 7
The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 6).
Average cloud cover in September
Santo Tomás, Cuba
- Average cloud cover in September: 26
The month with the most cloud cover is October (Cloud cover 31).
The month with the least cloud cover is February (Cloud cover 24).
Average visibility in September
Santo Tomás, Cuba
- 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).
