September weather forecastHavana, TX
September
Weather in September
September, the first month of the autumn in Havana, is still a tropical month, with an average temperature fluctuating between 77.2°F (25.1°C) and 92.8°F (33.8°C).Temperature
With the onset of September, Havana experiences a modest temperature adjustment, with the average high-temperature gently receding from a very hot 99.1°F (37.3°C) in August to a tropical 92.8°F (33.8°C). Havana usually reports an average low-temperature of 77.2°F (25.1°C) during the month of September.Heat index
In September, the heat index is evaluated at an extremely hot 109.4°F (43°C). Vigilance: Heat cramps and heat exhaustion are likely. The likelihood of heatstroke increases with continued activity.Take into consideration that the heat index values are calculated for shade and light wind conditions. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 extremely significant for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
In Havana, the average relative humidity in September is 64%.Rainfall
September is the month with the most rainfall. Rain falls for 14.2 days and accumulates 1.69" (43mm) of precipitation.Snowfall
In Havana, snow does not fall in February through December.Daylight
In Havana, the average length of the day in September is 12h and 18min.On the first day of the month, sunrise is at 7:14 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:26 am and sunset at 7:21 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Havana, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 7 suggests these recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Havana, TX
- Average high temperature in September: 92.8°F
The warmest month (with the highest average high temperature) is August (99.1°F).
The month with the lowest average high temperature is January (69.6°F).
- Average low temperature in September: 77.2°F
The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (53.2°F).
Average pressure in September
Havana, TX
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in September
Havana, TX
- Average wind speed in September: 9.7mph
The windiest months (with the highest average wind speed) are May and July (13.4mph).
The calmest months (with the lowest average wind speed) are January and December (9.6mph).
Average humidity in September
Havana, TX
- Average humidity in September: 64%
The month with the highest relative humidity is December (67%).
The month with the lowest relative humidity is August (56%).
Average rainfall in September
Havana, TX
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is September (1.69").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in September
Havana, TX
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is September (14.2 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Havana, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Havana, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Havana, TX
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Havana, TX
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is September (13.5 days).
Average UV index in September
Havana, TX
- Average UV index in September: 7
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Havana, TX
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Havana, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
