Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The ushering in of April brings an average high-temperature of a moderately hot 77.7°F (25.4°C), closely mirroring the 73°F (22.8°C) of March. Port Isabel registers a small shift from peak daytime temperatures, with a consistent average low-temperature of 71.2°F (21.8°C) during April.Humidity
In April, the average relative humidity in Port Isabel is 79%.Rainfall
April is the month with the least rainfall. Rain falls for 8.8 days and accumulates 0.51" (13mm) of precipitation.Ocean temperature
In April, the average ocean temperature is 73.9°F (23.3°C).Note: When thinking about a swim in 73.9°F (23.3°C) waters, consider your cold tolerance, the day's sunshine, wind, and air temperature. It is a fun fact that Olympic swimmers dive into waters of 77°F (25°C) to 82.4°F (28°C).
Daylight
In April, the average length of the day is 12h and 47min.On the first day of the month, sunrise is at 7:18 am and sunset at 7:45 pm. On the last day of April, sunrise is at 6:51 am and sunset at 8:00 pm CDT.
Sunshine
In April, the average sunshine in Port Isabel is 8.9h.UV index
April through September, with an average maximum UV index of 7, are months with the highest UV index in Port Isabel. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.Note: In April, the maximum UV index of 7 suggests these recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Opt for tightly woven and loose clothing to enhance protection from the Sun. Watch out! Reflections from sand and water can surge UV radiation exposure.
Frequently asked questions
What is the usual temperature for Port Isabel in April?
What is the average humidity in April in Port Isabel?
What is the driest month in Port Isabel?
How much does it rain in Port Isabel in April?
How warm is the water in April in Port Isabel?
What is the average length of the day in April in Port Isabel?
What time are sunrise and sunset in April in Port Isabel?
How many hours of sunshine does Port Isabel have in April?
What are the months with the highest UV index in Port Isabel?
What is the UV index intensity in April in Port Isabel?
Average temperature in April
Port Isabel, TX
- Average high temperature in April: 77.7°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 April: 71.2°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 April
Port Isabel, TX
- Average pressure in April: 29.9"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 April
Port Isabel, TX
- Average wind speed in April: 14.2mph
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 April
Port Isabel, TX
- Average humidity in April: 79%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Port Isabel, TX
- Average rainfall in April: 0.51"
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 April
Port Isabel, TX
- Average rainfall days in April: 8.8 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 April
Port Isabel, TX
- Average sea temperature in April: 73.9°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 April /
Average sunshine in April
Port Isabel, TX
- Average daylight in April: 12h and 5min
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 April: 8h and 5min
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 April
Port Isabel, TX
- Average sunshine days in April: 19.3 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 April
Port Isabel, TX
- Average UV index in April: 7
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 April
Port Isabel, TX
- Average cloud cover in April: 34
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 April
Port Isabel, TX
- Average visibility in April: 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 Isabel, Texas, USA
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