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
September ushers in an average high-temperature of a still tropical 30.9°C (87.6°F), aligning closely with the preceding month. San Carlos, during September, witnesses an average low-temperature of 23.5°C (74.3°F).Heat index
The heat index in September is computed to be an extremely hot 40°C (104°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.
Humidity
The average relative humidity in September in San Carlos is 79%.Rainfall
The wettest months are May and September, with an average 95mm (3.74") of rainfall.Daylight
The average length of the day in September is 12h and 15min.On the first day of September, sunrise is at 06:45 and sunset at 19:15. On the last day of the month, sunrise is at 06:51 and sunset at 18:49 CDT.
Sunshine
In San Carlos, the average sunshine in September is 10.7h.UV index
April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 7 in September transforms into this advice:
Shun overexposure. Protection from sun ravages is indispensable. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
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?
What is the rainiest month?
How many days does it rain in September?
How many hours of daylight does San Carlos have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index?
What is the UV index reading in September?
Average temperature in September
San Carlos, Cuba
- Average high temperature in September: 30.9°C
The warmest month (with the highest average high temperature) is August (31.8°C).
The month with the lowest average high temperature is January (27.9°C).
- Average low temperature in September: 23.5°C
The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is February (20°C).
Average pressure in September
San Carlos, Cuba
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is January (1016.5mbar).
The month with the lowest atmospheric pressure is October (1012mbar).
Average wind speed in September
San Carlos, Cuba
- Average wind speed in September: 7.4km/h
The windiest months (with the highest average wind speed) are February and December (9.8km/h).
The calmest months (with the lowest average wind speed) are September and October (7.4km/h).
Average humidity in September
San Carlos, Cuba
- Average humidity in September: 79%
The month with the highest relative humidity is October (82%).
The month with the lowest relative humidity is March (75%).
Average rainfall in September
San Carlos, Cuba
- Average rainfall in September: 95mm
The wettest months (with the highest rainfall) are May and September (95mm).
The driest month (with the least rainfall) is February (15mm).
Average rainfall days in September
San Carlos, Cuba
- Average rainfall days in September: 21.7 days
The month with the highest number of rainy days is October (23.9 days).
The month with the least rainy days is February (9 days).
Average daylight in September /
Average sunshine in September
San Carlos, Cuba
- 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: 10h and 54min).
- Average sunshine in September: 10h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 7h and 0min).
Average sunshine days in September
San Carlos, Cuba
- Average sunshine days in September: 5.5 days
The month with the most sunshine days is December (14 days).
The month with the least sunshine days is May (4.6 days).
Average UV index in September
San Carlos, Cuba
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 6).
Average cloud cover in September
San Carlos, Cuba
- Average cloud cover in September: 23
The months with the most cloud cover are May and October (Cloud cover 28).
The months with the least cloud cover are February and August (Cloud cover 21).
Average visibility in September
San Carlos, Cuba
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September, November and December (10km).
The months with the lowest visibility are May and October (9km).
