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's beginning signals an average high-temperature of a still hot 31.2°C (88.2°F), barely different from August's 31.9°C (89.4°F). In the month of September, the temperature generally rests at an average low of 24.2°C (75.6°F).Heat index
In September, the heat index is estimated at an extremely hot 42°C (107.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.Observations indicate that the heat index values are for shady locations with light wind. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived 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. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In San Juan y Martínez, the average relative humidity in September is 80%.Rainfall
In San Juan y Martínez, in September, it is raining for 25.9 days, with typically 104mm (4.09") of accumulated precipitation. In San Juan y Martínez, during the entire year, the rain falls for 211.9 days and collects up to 823mm (32.4") of precipitation.Daylight
In San Juan y Martínez, the average length of the day in September is 12h and 16min.On the first day of September, sunrise is at 07:18 and sunset at 19:51. On the last day of the month, sunrise is at 07:26 and sunset at 19:23 CDT.
Sunshine
The average sunshine in September is 9h.UV index
The months with the highest UV index are April through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 7 during September leads to these instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in San Juan y Martínez in September?
What is the average humidity in September in San Juan y Martínez?
How many days does it rain in September in San Juan y Martínez?
What is the average length of the day in September in San Juan y Martínez?
What time are sunrise and sunset in September in San Juan y Martínez?
How long on average sun shines in September in San Juan y Martínez?
What is the month with the highest UV index in San Juan y Martínez?
What is the UV index reading in September in San Juan y Martínez?
Average temperature in September
San Juan y Martínez, Cuba
- Average high temperature in September: 31.2°C
The warmest month (with the highest average high temperature) is July (32.1°C).
The month with the lowest average high temperature is January (25.3°C).
- Average low temperature in September: 24.2°C
The month with the highest average low temperature is August (24.7°C).
The coldest month (with the lowest average low temperature) is January (18.5°C).
Average pressure in September
San Juan y Martínez, Cuba
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is January (1018mbar).
The month with the lowest atmospheric pressure is October (1012.8mbar).
Average wind speed in September
San Juan y Martínez, Cuba
- Average wind speed in September: 8km/h
The windiest months (with the highest average wind speed) are January and March (11.2km/h).
The calmest month (with the lowest average wind speed) is July (7.6km/h).
Average humidity in September
San Juan y Martínez, Cuba
- Average humidity in September: 80%
The months with the highest relative humidity are October and December (81%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
San Juan y Martínez, Cuba
- Average rainfall in September: 104mm
The wettest month (with the highest rainfall) is August (134mm).
The driest month (with the least rainfall) is March (17mm).
Average rainfall days in September
San Juan y Martínez, Cuba
- Average rainfall days in September: 25.9 days
The month with the highest number of rainy days is September (25.9 days).
The month with the least rainy days is March (9.6 days).
Average daylight in September /
Average sunshine in September
San Juan y Martínez, 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 0min
The months with the most sunshine are May and June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
San Juan y Martínez, Cuba
- Average sunshine days in September: 2.7 days
The month with the most sunshine days is March (18.2 days).
The month with the least sunshine days is September (2.7 days).
Average UV index in September
San Juan y Martínez, Cuba
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover in September
San Juan y Martínez, Cuba
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 33).
The months with the least cloud cover are March and April (Cloud cover 23).
Average visibility in September
San Juan y Martínez, Cuba
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June and July (10km).
The months with the lowest visibility are January, February, August, September, October, November and December (9km).
