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
Port O'Connor's average high-temperature marks a still hot 86.9°F (30.5°C) with the advent of September, closely mirroring that of the preceding month. In September, Port O'Connor experiences a temperature dip to an average of 76.1°F (24.5°C) at night.Heat index
The heat index value for September is computed to be a very hot 98.6°F (37°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.Observations indicate that the heat index values are for shady locations with light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are primarily vital for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
The average relative humidity in September is 74%.Rainfall
The month with the most rainfall is September, when the rain falls for 20 days and typically aggregates up to 4.25" (108mm) of precipitation.Snowfall
February through December are months without snowfall.Ocean temperature
In Port O'Connor, in September, the average water temperature is 84.7°F (29.3°C).Note: For swimming, diving, and enjoying other water activities, the range of 77°F (25°C) to 84.2°F (29°C) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.
Daylight
In September, the average length of the day in Port O'Connor is 12h and 19min.On the first day of September, sunrise is at 7:04 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:12 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Watch out! Reflections from sand and water can surge UV radiation exposure.
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?
What is the wettest month?
How many days does it rain in September?
When it does not snow?
What is the water temperature in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Port O'Connor have in September?
What is the UV index intensity in September?
Average temperature in September
Port O'Connor, TX
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is August (90.7°F).
The month with the lowest average high temperature is January (62.2°F).
- Average low temperature in September: 76.1°F
The month with the highest average low temperature is August (79.3°F).
The coldest month (with the lowest average low temperature) is January (49.6°F).
Average pressure in September
Port O'Connor, TX
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Port O'Connor, TX
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is September (8.5mph).
Average humidity in September
Port O'Connor, TX
- Average humidity in September: 74%
The months with the highest relative humidity are February and March (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Port O'Connor, TX
- Average rainfall in September: 4.25"
The wettest month (with the highest rainfall) is September (4.25").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in September
Port O'Connor, TX
- Average rainfall days in September: 20 days
The month with the highest number of rainy days is September (20 days).
The month with the least rainy days is January (10.8 days).
Average snowfall in September
Port O'Connor, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
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
Port O'Connor, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Port O'Connor, TX
- Average sea temperature in September: 84.7°F
The best month for swimming (with the highest average sea temperature) is August (87°F).
The coldest months (with the lowest average sea temperature) are January and February (60.8°F).
Average daylight in September /
Average sunshine in September
Port O'Connor, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Port O'Connor, TX
- Average sunshine days in September: 8.5 days
The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is September (8.5 days).
Average UV index in September
Port O'Connor, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Port O'Connor, TX
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Port O'Connor, 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 O'Connor, Texas, USA
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