Port Isabel
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Port Isabel Weather in May

Port Isabel in May sees high daytime temperatures of 30°C (86°F) and nighttime lows of 24°C (75°F). Moderate rainfall is typical, with around 48 mm (1.9 in) for the month.

Rainfall in Port Isabel in May

Typically, you can expect about 6 days of rain this month, with 48 mm (1.9 in) on average. When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.

Temperature in Port Isabel in May

May in Port Isabel brings high temperatures, with highs of 30°C (86°F) and nights around 24°C (75°F). This kind of day-to-night contrast is typical for this time of year. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.

Sunshine in Port Isabel in May

Expect sunny days throughout the month, with an estimated 267 hours of sunshine. This makes it a pleasant time to visit Port Isabel.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, October, November and December typically offer the best weather for Port Isabel.

Port Isabel Temperature in May

Min Temperature
24°C (75°F)
Max Temperature
30°C (86°F)
Chance of Rain
19%
Precipitation
48 mm (1.9 in)
Rainy days
6 days
Humidity
75% *
Sunshine
267 hours *
Percentage Sunshine
64% *
* Data from: Brownsville, the United States of America (29 KM, 18 Miles).

Port Isabel Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Port Isabel - and find the best time to visit.

Best Places in the United States of America in May

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Port Isabel in May

Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Port Isabel in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    10/10
  • Cycling
    8/10
  • Walking
    8/10
  • Barbeque
    10/10
  • Camping
    10/10
  • Outdoor sports
    8/10

Port Isabel 3-Day Forecast

Popular in May

Where to go in May - average daytime high across popular destinations.

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