May weather forecast
High Island, TX

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Weather in May

May, the last month of the spring in High Island, is another warm month, with an average temperature fluctuating between 70.5°F (21.4°C) and 82.9°F (28.3°C).

Temperature

The start of May brings a subtle rise in the average high-temperature, moving from 76.1°F (24.5°C) in April to a still warm 82.9°F (28.3°C). Throughout May, the nighttime temperature averages to a pleasant 70.5°F (21.4°C).

Heat index

In May, the heat index is appraised at a hot 91.4°F (33°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Always consider that heat index estimations are for light winds and places in the shade. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

In High Island, the average relative humidity in May is 78%.

Rainfall

In May, the rain falls for 9.4 days. Throughout May, 1.69" (43mm) of precipitation is accumulated. In High Island, during the entire year, the rain falls for 132.4 days and collects up to 13.78" (350mm) of precipitation.

Snowfall

In High Island, snow does not fall in January through November.

Daylight

In May, the average length of the day is 13h and 39min.
On the first day of May, sunrise is at 6:34 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:12 pm CDT.

Sunshine

In High Island, the average sunshine in May is 10.2h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in High Island. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In May, the maximum UV index of 7 transforms into these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

How hot is it in High Island in May?

During May, High Island experiences an average high-temperature of 82.9°F (28.3°C) and a low-temperature of 70.5°F (21.4°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in May is appraised at 91.4°F (33°C).

What is the average humidity in May in High Island?

In High Island, the average relative humidity in May is 78%.

How many days does it rain in May in High Island?

In May, in High Island, the rain falls for 9.4 days. Throughout May, 1.69" (43mm) of precipitation is accumulated.

When it does not snow in High Island?

January through November are months without snowfall in High Island.

How many hours of daylight does High Island have in May?

In May, the average day length in High Island, Texas, is 13h and 39min.

When are sunrise and sunset in May in High Island?

On the first day of May in High Island, Texas, sunrise is at 6:34 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:12 pm CDT.

How long on average sun shines in May in High Island?

In May, the average sunshine duration in High Island, Texas, is 10.2h.

What are the months with the highest UV index in High Island?

The months with the highest UV index in High Island, Texas, are May through August, with an average maximum UV index of 7.

What is the UV index reading in May in High Island?

In May, the average daily maximum UV index in High Island is 7. A UV Index value 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
High Island, TX

Average temperature in May - High Island, TX
  • Average high temperature in May: 82.9°F

The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (59.5°F).

  • Average low temperature in May: 70.5°F

The month with the highest average low temperature is July (77.9°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).

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Average pressure in May
High Island, TX

Average pressure in May - High Island, TX
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
High Island, TX

Average wind speed in May - High Island, TX
  • Average wind speed in May: 8.8mph

The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest months (with the lowest average wind speed) are August and September (6.6mph).

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Average humidity in May
High Island, TX

Average humidity in May - High Island, TX
  • Average humidity in May: 78%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in May
High Island, TX

Average rainfall in May - High Island, TX
  • Average rainfall in May: 1.69"

The wettest month (with the highest rainfall) is September (2.01").
The driest months (with the least rainfall) are February and March (0.43").

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Average rainfall days in May
High Island, TX

Average rainfall days in May - High Island, TX
  • Average rainfall days in May: 9.4 days

The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is February (6.5 days).

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Average snowfall in May
High Island, TX

Average snowfall in May - High Island, TX
  • Average snowfall in May: 0"

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

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Average snowfall days in May
High Island, TX

Average snowfall days in May - High Island, TX
  • Average snowfall days in May: 0 days

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

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Average daylight in May /
Average sunshine in May
High Island, TX

Average daylight in May / Average sunshine in May - High Island, TX
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in May: 10h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in May
High Island, TX

Average sunshine days in May - High Island, TX
  • Average sunshine days in May: 19.3 days

The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is August (9.3 days).

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Average UV index in May
High Island, TX

Average UV index in May - High Island, TX
  • Average UV index in May: 7

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in May
High Island, TX

Average cloud cover in May - High Island, TX
  • Average cloud cover in May: 32

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in May
High Island, TX

Average visibility in May - High Island, 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).

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High Island, Texas, USA

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