September weather forecast
Corpus Christi, TX

The two domes and red roof of the iconic and mighty Corpus Christi in Texas
The two domes and red roof of the iconic and mighty Corpus Christi in Texas

Weather in September

September, the first month of the autumn in Corpus Christi, is still a hot month, with an average temperature varying between 76.8°F (24.9°C) and 89.6°F (32°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still tropical 89.6°F (32°C). In Corpus Christi, the average low-temperature is 76.8°F (24.9°C).

Heat index

In September, the average heat index is appraised at a blistering 104°F (40°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. 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', 'real feel', 'apparent temperature', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, metabolic differences), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in September is 70%.

Rainfall

September is the month with the most rainfall. Rain falls for 15 days and accumulates 2.05" (52mm) of precipitation.

Snowfall

January, March through November are months without snowfall in Corpus Christi.

Ocean temperature

In September, the average ocean temperature 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

The average length of the day in September is 12h and 19min.
On the first day of September in Corpus Christi, sunrise is at 7:08 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:17 pm CDT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

In Corpus Christi, Texas, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 7 in September transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in September in Corpus Christi?

In Corpus Christi, in September, the average high-temperature is 89.6°F (32°C), and the average low-temperature is 76.8°F (24.9°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is appraised at 104°F (40°C).

What is the average humidity in September in Corpus Christi?

In Corpus Christi, the average relative humidity in September is 70%.

What is the wettest month in Corpus Christi?

The month with the most rainfall in Corpus Christi is September, when the rain falls for 15 days and typically aggregates up to 2.05" (52mm) of precipitation.

How many days does it rain in September in Corpus Christi?

In Corpus Christi, Texas, in September, it is raining for 15 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow in Corpus Christi?

January, March through November are months without snowfall.

What is the ocean temperature in September in Corpus Christi?

In Corpus Christi, Texas, the average seawater temperature in September is 84.6°F (29.2°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in September in Corpus Christi?

In September, the average day length in Corpus Christi is 12h and 19min.

What time are sunrise and sunset in September in Corpus Christi?

On the first day of September, sunrise is at 7:08 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:17 pm CDT.

How many hours of sunshine does Corpus Christi have in September?

In Corpus Christi, Texas, the average sunshine duration in September is 8.5h.

What is the UV index reading in September in Corpus Christi?

In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Corpus Christi, TX

Average temperature in September - Corpus Christi, TX
  • Average high temperature in September: 89.6°F

The warmest month (with the highest average high temperature) is August (94.1°F).
The month with the lowest average high temperature is January (64.6°F).

  • Average low temperature in September: 76.8°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 (50.9°F).

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Average pressure in September
Corpus Christi, TX

Average pressure in September - Corpus Christi, TX
  • Average pressure in September: 29.91"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in September
Corpus Christi, TX

Average wind speed in September - Corpus Christi, TX
  • Average wind speed in September: 8.6mph

The windiest month (with the highest average wind speed) is May (11.5mph).
The calmest month (with the lowest average wind speed) is September (8.6mph).

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Average humidity in September
Corpus Christi, TX

Average humidity in September - Corpus Christi, TX
  • Average humidity in September: 70%

The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (67%).

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Average rainfall in September
Corpus Christi, TX

Average rainfall in September - Corpus Christi, TX
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is September (2.05").
The driest month (with the least rainfall) is February (0.63").

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Average rainfall days in September
Corpus Christi, TX

Average rainfall days in September - Corpus Christi, TX
  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is September (15 days).
The months with the least rainy days are July and August (7.3 days).

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Average snowfall days in September
Corpus Christi, TX

Average snowfall days in September - Corpus Christi, TX
  • Average snowfall days in September: 0 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, September, October and November (0 days).

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Average sea temperature in September
Corpus Christi, TX

Average sea temperature in September - Corpus Christi, 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).

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Average daylight in September /
Average sunshine in September
Corpus Christi, TX

Average daylight in September / Average sunshine in September - Corpus Christi, TX
  • Average daylight in September: 12h and 19min

The month with the longest days is June (Average daylight: 13h and 52min).
The month with the shortest days is December (Average daylight: 10h and 25min).

  • Average sunshine in September: 8h and 30min

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 42min).

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Average sunshine days in September
Corpus Christi, TX

Average sunshine days in September - Corpus Christi, TX
  • Average sunshine days in September: 12.6 days

The month with the most sunshine days is July (22.5 days).
The month with the least sunshine days is September (12.6 days).

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Average UV index in September
Corpus Christi, TX

Average UV index in September - Corpus Christi, TX
  • Average UV index in September: 7

The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Corpus Christi, TX

Average cloud cover in September - Corpus Christi, TX
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in September
Corpus Christi, TX

Average visibility in September - Corpus Christi, 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).

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