March weather forecastPort Isabel, TX
March
Weather in March
March, the first month of the spring in Port Isabel, is still a pleasant month, with an average temperature fluctuating between 66°F (18.9°C) and 73°F (22.8°C).Temperature
As March takes hold, the average high-temperature is a still agreeable 73°F (22.8°C), nearly mirroring that of the previous month. Nighttime readings during March register a minimal drop from daytime highs, averaging at a comfortable 66°F (18.9°C).Humidity
In March, the average relative humidity is 79%.Rainfall
In Port Isabel, during March, the rain falls for 8.2 days and regularly aggregates up to 0.87" (22mm) of precipitation. 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 Port Isabel, in March, the average water temperature is 68.2°F (20.1°C).Note: In 68.2°F (20.1°C), swimming is not an enjoyable activity for most. As the temperature decreases from 69.8°F (21°C) to 59°F (15°C), it becomes harder to control breathing.
Daylight
The average length of the day in March is 12h and 2min.On the first day of the month, sunrise is at 6:51 am and sunset at 6:30 pm CST. On the last day of March, sunrise is at 7:20 am and sunset at 7:45 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.
Sunshine
In Port Isabel, the average sunshine in March is 7.7h.UV index
In March, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The UV index of 6 during March leads to these advisories:
Resist overexposure. Safeguarding from solar damage is indispensable. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Port Isabel, TX
- Average high temperature in March: 73°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 March: 66°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).
Average pressure in March
Port Isabel, TX
- Average pressure in March: 29.99"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).
Average wind speed in March
Port Isabel, TX
- Average wind speed in March: 14mph
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).
Average humidity in March
Port Isabel, TX
- Average humidity in March: 79%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in March
Port Isabel, TX
- Average rainfall in March: 0.87"
The wettest month (with the highest rainfall) is September (4.13").
The driest month (with the least rainfall) is April (0.51").
Average rainfall days in March
Port Isabel, TX
- Average rainfall days in March: 8.2 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).
Average sea temperature in March
Port Isabel, TX
- Average sea temperature in March: 68.2°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).
Average daylight in March /
Average sunshine in March
Port Isabel, TX
- Average daylight in March: 12h and 0min
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 March: 7h and 42min
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).
Average sunshine days in March
Port Isabel, TX
- Average sunshine days in March: 20.7 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).
Average UV index in March
Port Isabel, TX
- Average UV index in March: 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).
Average cloud cover in March
Port Isabel, TX
- Average cloud cover in March: 39
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in March
Port Isabel, TX
- Average visibility in March: 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).
