May weather forecast
Port Aransas, TX

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Weather in May

May experiences a transition towards the hotter season, with the temperature reaching as high as 79.3°F (26.3°C). As spring progresses towards summer, daylight extends allowing residents and tourists to enjoy longer days. Residents predictably anticipate summer as temperatures continually rise, setting a lively atmosphere around. Though the weather may fluctuate, rainfall is not a significant deterrent to outdoor plans. Given the rising UV index, it becomes increasingly vital to include sun protection as part of daily routines.

Temperature

Port Aransas experiences a transition to a still moderately hot 79.3°F (26.3°C) in average high-temperatures with the arrival of May, not greatly differing from April's 74.8°F (23.8°C). Port Aransas's nighttime temperature in May experiences a slight dip from daytime highs, falling to an average of 74.8°F (23.8°C).

Humidity

The months with the highest humidity are March and May, with an average relative humidity of 81%.

Rainfall

In Port Aransas, in May, during 9.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, in Port Aransas, there are 126.5 rainfall days, and 14.57" (370mm) of precipitation is accumulated.

Snowfall

In Port Aransas, snow does not fall in January, March through December.

Ocean temperature

In May, the average ocean temperature is 77.9°F (25.5°C).
Note: Surface water temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

The average length of the day in May is 13h and 32min.
On the first day of the month, sunrise is at 6:47 am and sunset at 8:02 pm. On the last day of May, sunrise is at 6:32 am and sunset at 8:19 pm CDT.

Sunshine

In May, the average sunshine is 10.1h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high UV index of 7 in May translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take heed! Reflections of sand and water make the Sun's UV rays stronger.

Frequently asked questions

What are May temperatures?

The high-temperature during May is 79.3°F (26.3°C) and the low-temperature is 74.8°F (23.8°C).

What is the most humid month?

March and May, with an average relative humidity of 81%, are most humid months.

What is the average humidity in May?

In May, the average relative humidity in Port Aransas is 81%.

How many days does it rain in May?

In Port Aransas, during May, the rain falls for 9.3 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When it does not snow?

In Port Aransas, snow does not fall in January, March through December.

How warm is the water in May?

In Port Aransas, in May, the average water temperature is 77.9°F (25.5°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in May?

The average day length in May is 13h and 32min.

What time are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:47 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 8:19 pm CDT.

How many hours of sunshine does Port Aransas have in May?

The average sunshine duration in May in Port Aransas is 10.1h.

What is the month with the highest UV index?

May through September, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in May?

The average daily maximum UV index in May in Port Aransas is 7. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Port Aransas, TX

Average temperature in May - Port Aransas, TX
  • Average high temperature in May: 79.3°F

The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is January (62.6°F).

  • Average low temperature in May: 74.8°F

The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (54.9°F).

Average pressure in May
Port Aransas, TX

Average pressure in May - Port Aransas, TX
  • Average pressure in May: 29.9"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in May
Port Aransas, TX

Average wind speed in May - Port Aransas, TX
  • Average wind speed in May: 14.2mph

The windiest months (with the highest average wind speed) are April and May (14.2mph).
The calmest month (with the lowest average wind speed) is September (11.3mph).

Average humidity in May
Port Aransas, TX

Average humidity in May - Port Aransas, TX
  • Average humidity in May: 81%

The months with the highest relative humidity are March and May (81%).
The month with the lowest relative humidity is October (73%).

Average rainfall in May
Port Aransas, TX

Average rainfall in May - Port Aransas, TX
  • Average rainfall in May: 0.98"

The wettest month (with the highest rainfall) is September (2.99").
The driest months (with the least rainfall) are February and March (0.51").

Average rainfall days in May
Port Aransas, TX

Average rainfall days in May - Port Aransas, TX
  • Average rainfall days in May: 9.3 days

The month with the highest number of rainy days is September (17.8 days).
The month with the least rainy days is February (7.8 days).

Average snowfall in May
Port Aransas, TX

Average snowfall in May - Port Aransas, TX
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in May
Port Aransas, TX

Average snowfall days in May - Port Aransas, TX
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, October, November and December (0 days).

Average sea temperature in May
Port Aransas, TX

Average sea temperature in May - Port Aransas, TX
  • Average sea temperature in May: 77.9°F

The best month for swimming (with the highest average sea temperature) is August (86.1°F).
The coldest month (with the lowest average sea temperature) is February (61.3°F).

Average daylight in May /
Average sunshine in May
Port Aransas, TX

Average daylight in May / Average sunshine in May - Port Aransas, TX
  • Average daylight in May: 13h and 3min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in May: 10h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

Average sunshine days in May
Port Aransas, TX

Average sunshine days in May - Port Aransas, TX
  • Average sunshine days in May: 19 days

The month with the most sunshine days is March (20.5 days).
The month with the least sunshine days is September (10.3 days).

Average UV index in May
Port Aransas, TX

Average UV index in May - Port Aransas, TX
  • Average UV index in May: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

Average cloud cover in May
Port Aransas, TX

Average cloud cover in May - Port Aransas, TX
  • Average cloud cover in May: 33

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 22).

Average visibility in May
Port Aransas, TX

Average visibility in May - Port Aransas, TX
  • Average visibility in May: 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 Aransas, Texas, USA

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