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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a very hot 95.7°F (35.4°C) to a tropical 88.7°F (31.5°C). In September, Star Harbor encounters an average low-temperature of 68.9°F (20.5°C) during the night.Heat index
The heat index value during September is estimated at a very hot 100.4°F (38°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.Observations indicate that the heat index values are for shady locations with light wind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
In Star Harbor, Texas, the average relative humidity in September is 68%.Rainfall
In Star Harbor, in September, it is raining for 10.2 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, in Star Harbor, there are 101.3 rainfall days, and 10.59" (269mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall in Star Harbor.Daylight
In Star Harbor, the average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 6:59 am and sunset at 7:48 pm. On the last day of September, in Star Harbor, Texas, sunrise is at 7:18 am and sunset at 7:09 pm CDT.
Sunshine
In Star Harbor, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.Note: In September, a regular UV index of 6 translates into these guidelines:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
How hot is it in Star Harbor in September?
What is the average humidity in September in Star Harbor?
How much does it rain in Star Harbor in September?
When it does not snow in Star Harbor?
What is the average length of the day in September in Star Harbor?
What time are sunrise and sunset in September in Star Harbor?
How long on average sun shines in September in Star Harbor?
What is the UV index reading in September in Star Harbor?
Average temperature in September
Star Harbor, TX
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (55.2°F).
- Average low temperature in September: 68.9°F
The month with the highest average low temperature is August (74.5°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).
Average pressure in September
Star Harbor, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Star Harbor, TX
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is September (6mph).
Average humidity in September
Star Harbor, TX
- Average humidity in September: 68%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Star Harbor, TX
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is May (1.42").
The driest months (with the least rainfall) are January and November (0.55").
Average rainfall days in September
Star Harbor, TX
- Average rainfall days in September: 10.2 days
The months with the highest number of rainy days are May and September (10.2 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in September
Star Harbor, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Star Harbor, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Star Harbor, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Star Harbor, TX
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is September (15.7 days).
Average UV index in September
Star Harbor, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Star Harbor, TX
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Star Harbor, 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).
Star Harbor, Texas, USA
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