October weather forecast
Port Isabel, TX

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Weather in October

October, the same as September, is another warm autumn month in Port Isabel, Texas, with an average temperature varying between 81.9°F (27.7°C) and 76.1°F (24.5°C).

Temperature

The shift from September to October is characterized by an average high-temperature of a moderately hot 81.9°F (27.7°C), not significantly different from the 86.2°F (30.1°C) of September. Port Isabel's nocturnal readings in October exhibit minimal variation from the daytime temperatures, averaging at a still warm 76.1°F (24.5°C).

Heat index

For October, the heat index is evaluated at a tropical 86°F (30°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

October is the least humid month, with an average relative humidity of 72%.

Rainfall

In October, the rain falls for 13.5 days. Throughout October, 2.56" (65mm) of precipitation is accumulated. In Port Isabel, during the entire year, the rain falls for 143.2 days and collects up to 21.38" (543mm) of precipitation.

Ocean temperature

In October, the average ocean temperature is 81.5°F (27.5°C).
Note: Surface water temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are considered superb and highly pleasant for water activities over extended periods.

Daylight

In Port Isabel, the average length of the day in October is 11h and 32min.
On the first day of October in Port Isabel, Texas, sunrise is at 7:21 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 6:47 pm CDT.

Sunshine

In Port Isabel, the average sunshine in October is 7.5h.

UV index

In Port Isabel, the average daily maximum UV index in October is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 6 during October morphs into the following directions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Notice! The reflection of water and sand increases the UV radiation significantly.
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Frequently asked questions

What is the temperature in October in Port Isabel?

The average high-temperature and low-temperature in Port Isabel during October are 81.9°F (27.7°C) and 76.1°F (24.5°C) respectively. In October, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 86°F (30°C).

What is the least humid month in Port Isabel?

October is the least humid month in Port Isabel, Texas, with an average relative humidity of 72%.

What is the average humidity in October in Port Isabel?

In October, the average relative humidity in Port Isabel is 72%.

How many days does it rain in October in Port Isabel?

In October, in Port Isabel, the rain falls for 13.5 days. Throughout October, 2.56" (65mm) of precipitation is accumulated.

What is the water temperature in October in Port Isabel?

In October, the average ocean temperature in Port Isabel, Texas, is 81.5°F (27.5°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 Port Isabel have in October?

The average day length in October in Port Isabel is 11h and 32min.

When is the sunrise / sunset in October in Port Isabel?

On the first day of October in Port Isabel, sunrise is at 7:21 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 6:47 pm CDT.

How many hours of sunshine does Port Isabel have in October?

The average sunshine duration in October in Port Isabel, Texas, is 7.5h.

How high is the UV index in October in Port Isabel?

The average daily maximum UV index in October is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.

Average temperature in October
Port Isabel, TX

Average temperature in October - Port Isabel, TX
  • Average high temperature in October: 81.9°F

The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (67.1°F).

  • Average low temperature in October: 76.1°F

The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (59.5°F).

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Average pressure in October
Port Isabel, TX

Average pressure in October - Port Isabel, TX
  • Average pressure in October: 29.96"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).

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Average wind speed in October
Port Isabel, TX

Average wind speed in October - Port Isabel, TX
  • Average wind speed in October: 12.4mph

The windiest month (with the highest average wind speed) is April (14.2mph).
The calmest month (with the lowest average wind speed) is September (10.9mph).

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Average humidity in October
Port Isabel, TX

Average humidity in October - Port Isabel, TX
  • Average humidity in October: 72%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in October
Port Isabel, TX

Average rainfall in October - Port Isabel, TX
  • Average rainfall in October: 2.56"

The wettest month (with the highest rainfall) is September (4.13").
The driest month (with the least rainfall) is April (0.51").

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Average rainfall days in October
Port Isabel, TX

Average rainfall days in October - Port Isabel, TX
  • Average rainfall days in October: 13.5 days

The month with the highest number of rainy days is September (19.8 days).
The month with the least rainy days is March (8.2 days).

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Average sea temperature in October
Port Isabel, TX

Average sea temperature in October - Port Isabel, TX
  • Average sea temperature in October: 81.5°F

The best month for swimming (with the highest average sea temperature) is August (85.1°F).
The coldest month (with the lowest average sea temperature) is February (66.7°F).

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Average daylight in October /
Average sunshine in October
Port Isabel, TX

Average daylight in October / Average sunshine in October - Port Isabel, TX
  • Average daylight in October: 11h and 3min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in October: 7h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

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Average sunshine days in October
Port Isabel, TX

Average sunshine days in October - Port Isabel, TX
  • Average sunshine days in October: 14.6 days

The month with the most sunshine days is March (20.7 days).
The month with the least sunshine days is September (7.2 days).

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Average UV index in October
Port Isabel, TX

Average UV index in October - Port Isabel, TX
  • Average UV index in October: 6

The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February and December (UV index 5).

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Average cloud cover in October
Port Isabel, TX

Average cloud cover in October - Port Isabel, TX
  • Average cloud cover in October: 30

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in October
Port Isabel, TX

Average visibility in October - Port Isabel, TX
  • Average visibility in October: 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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Port Isabel, Texas, USA

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