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 sea temperature 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
With September's arrival, Port Aransas notes an average high-temperature of a moderately hot 84.9°F (29.4°C), closely following the trend of the preceding month. Port Aransas's nocturnal readings in September exhibit minimal variation from the daytime temperatures, averaging at 79.7°F (26.5°C).Heat index
September's average heat index is appraised at a sweltering 95°F (35°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. 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 are of high significance for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
The average relative humidity in September in Port Aransas is 75%.Rainfall
The month with the most rainfall is September, when the rain falls for 17.8 days and typically aggregates up to 2.99" (76mm) of precipitation.Snowfall
In Port Aransas, snow does not fall in January, March through December.Ocean temperature
In Port Aransas, Texas, the average seawater temperature in September is 84.6°F (29.2°C).Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.
Daylight
In September, the average length of the day is 12h and 19min.On the first day of the month, sunrise is at 7:07 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:15 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 7 in September translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September in Port Aransas?
What is the rainiest month in Port Aransas?
How many days does it rain in September?
When it does not snow?
How warm is the water in September?
What is the average length of the day in September?
When are sunrise and 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
Port Aransas, TX
- Average high temperature in September: 84.9°F
The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is January (62.6°F).
- Average low temperature in September: 79.7°F
The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (54.9°F).
Average pressure in September
Port Aransas, TX
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Port Aransas, TX
- Average wind speed in September: 11.3mph
The windiest months (with the highest average wind speed) are April and May (14.2mph).
The calmest month (with the lowest average wind speed) is September (11.3mph).
Average humidity in September
Port Aransas, TX
- Average humidity in September: 75%
The months with the highest relative humidity are March and May (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Port Aransas, TX
- Average rainfall in September: 2.99"
The wettest month (with the highest rainfall) is September (2.99").
The driest months (with the least rainfall) are February and March (0.51").
Average rainfall days in September
Port Aransas, TX
- Average rainfall days in September: 17.8 days
The month with the highest number of rainy days is September (17.8 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in September
Port Aransas, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Port Aransas, TX
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, October, November and December (0 days).
Average sea temperature in September
Port Aransas, TX
- Average sea temperature in September: 84.6°F
The best month for swimming (with the highest average sea temperature) is August (86.1°F).
The coldest month (with the lowest average sea temperature) is February (61.3°F).
Average daylight in September /
Average sunshine in September
Port Aransas, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Port Aransas, TX
- Average sunshine days in September: 10.3 days
The month with the most sunshine days is March (20.5 days).
The month with the least sunshine days is September (10.3 days).
Average UV index in September
Port Aransas, TX
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in September
Port Aransas, TX
- Average cloud cover in September: 31
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Port Aransas, 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).
Port Aransas, Texas, USA
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