September weather forecast and climate
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
September, the first month of the autumn, in Corpus Christi, is also a hot month, with average temperature ranging between min 76.8°F (24.9°C) and max 89.6°F (32°C).

Temperature

In September, the average high-temperature is relatively 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

The average heat index is appraised at a scorching 104.7°F (40.4°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the 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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, wind, differences in body mass, height, and shape). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

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

Rainfall

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

Snowfall

In Corpus Christi snow does not fall in January, March through November.

Ocean temperature

In Corpus Christi, Texas, the average seawater temperature is 84.6°F (29.2°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day is 12.3h.

Sunshine

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

UV index

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Corpus Christi?

In September, in Corpus Christi, the average high-temperature is 89.6°F (32°C), and the average low-temperature is 76.8°F (24.9°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines both air temperature and relative humidity, is evaluated at 104.7°F (40.4°C).

What is the average humidity in September in Corpus Christi?

The average relative humidity in September in Corpus Christi, Texas, is 70%.

How much does it rain in Corpus Christi in September?

In September, the rain falls for 15 days. Throughout September, 2.05" (52mm) of precipitation is accumulated.

What is the rainiest month in Corpus Christi?

September is the month with the most rainfall in Corpus Christi. Rain falls for 15 days and accumulates 2.05" (52mm) of 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 September, the average ocean temperature in Corpus Christi, Texas, is 84.6°F (29.2°C). 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.

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

In Corpus Christi, Texas, the average length of the day in September is 12.3h.

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

The average sunshine in September in Corpus Christi, Texas, is 8.5h.

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

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in September - Corpus Christi, TX
  • Average high temperature in September: 32°C

The warmest month (with the highest average high temperature) is August (34.5°C).
The month with the lowest average high temperature is January (18.1°C).

  • Average low temperature in September: 24.9°C

The month with the highest average low temperature is August (26.3°C).
The coldest month (with the lowest average low temperature) is January (10.5°C).

Average pressure in September - Corpus Christi, TX
  • Average pressure in September: 1013mbar

The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is June (1011.9mbar).

Average wind speed in September - Corpus Christi, TX
  • Average wind speed in September: 13.8km/h

The windiest month (with the highest average wind speed) is May (18.5km/h).
The calmest month (with the lowest average wind speed) is September (13.8km/h).

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%).

Average rainfall in September - Corpus Christi, TX
  • Average rainfall in September: 52mm

The wettest month (with the highest rainfall) is September (52mm).
The driest month (with the least rainfall) is February (16mm).

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).
Months with the least rainy days are July and August (7.3 days).

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).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

Average sea temperature in September - Corpus Christi, TX
  • Average sea temperature in September: 29.2°C

The best month for swimming (with the highest average sea temperature) is August (30.1°C).
The coldest month (with the lowest average sea temperature) is February (16.3°C).

Average daylight in September / Average sunshine in September - Corpus Christi, TX
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.9h).
The month with the shortest days is December (Average daylight: 10.4h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 4.7h).

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).

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).

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).

Average visibility in September - Corpus Christi, TX
  • Average visibility in September: 10km

Months with the highest visibility are May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March and April (9km).