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 snowfall in September
- Average snowfall 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
Weather in September
Temperature
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a sweltering 99.1°F (37.3°C) in August to a hot 92.8°F (33.8°C). Havana reports an average nighttime low-temperature of 77.2°F (25.1°C) in September.Heat index
September's heat index is estimated at a blistering 109.4°F (43°C). Mindful: Heat cramps and heat exhaustion are to be expected. Extended physical effort might result in heatstroke.Bear in mind that the heat index values are determined for shaded areas and light breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In September, the average relative humidity in Havana 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
The average length of the day in September in Havana is 12h and 18min.On the first day of September in Havana, sunrise is at 7:14 am and sunset at 7:53 pm. On the last day of the month, 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 September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 7 in September leads to these recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
How hot is it in Havana in September?
What is the average humidity in September in Havana?
What is the rainiest month in Havana?
How much does it rain in Havana in September?
When it does not snow in Havana?
What is the average length of the day in September in Havana?
What time are sunrise and sunset in September in Havana?
How long on average sun shines in September in Havana?
What is the UV index reading in September in Havana?
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 2min
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 3min
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).
Havana, Texas, USA
Weather forecast for your location
2. Allow the app to use your location
