May weather - Spring 2024

Weather in May
Frequently asked questions
Average temperature in May
Average pressure in May
Average wind speed in May
Average humidity in May
Average rainfall in May
Average rainfall days in May
Average snowfall days in May
Average sea temperature in May
Average daylight in May
Average sunshine in May
Average sunshine days in May
Average UV index in May
Average cloud cover in May
Average visibility in May

the colorful red night sky in the seaside city of Galveston in Texas

Weather in May

May sees the emergence of summer in Galveston, making it warmer and brighter. In contrast to the previous months, May experiences a significant rainfall increase hitting 1.85" on average while cloud cover decreases to a mere 30%. The evenings get more delightful as temperatures average around 73.8°F welcoming cool evening strolls. In spite of the increase in temperatures, people continue to enjoy outdoor activities facilitated by the increased sunshine causing many to take to the beach.

Temperature

The arrival of May signals a slight increase in the average high-temperature, moving from a pleasant 73°F in April to a warm 79.3°F. In the month of May, Galveston experiences a minor discrepancy from peak daytime temperatures, settling at an average low-temperature of 73.8°F.

Humidity

The average relative humidity in May in Galveston is 79%.

Rainfall

In Galveston, in May, during 11.3 rainfall days, 1.85" of precipitation is typically accumulated. Throughout the year, there are 161.9 rainfall days, and 24.33" of precipitation is accumulated.

Snowfall

March through December are months without snowfall in Galveston.

Ocean temperature

In May, the average ocean temperature in Galveston is 77.5°F.
Note: In water temperatures ranging between 77°F and 84.2°F, activities such as swimming and diving become highly pleasurable for long durations.

Daylight

In Galveston, the average length of the day in May is 13h and 38min.
On the first day of the month, sunrise is at 6:37 am and sunset at 7:55 pm. On the last day of May, sunrise is at 6:20 am and sunset at 8:13 pm CDT.

Sunshine

In May, the average sunshine is 10.3h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 7 in May translates into the following recommendations:
Fend off overexposure. Sun protection is vital. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Caution! The mirror effect of sand and water ups the UV radiation strength.

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FAQ

What is the usual temperature for Galveston in May?

In Galveston, in May, the average high-temperature is 79.3°F, and the average low-temperature is 73.8°F.

What is the average humidity in May in Galveston?

In Galveston, the average relative humidity in May is 79%.

How many days does it rain in May in Galveston?

In May, in Galveston, Texas, the rain falls for 11.3 days. Throughout May, 1.85" of precipitation is accumulated.

When it does not snow in Galveston?

March through December are months without snowfall in Galveston.

What is the ocean temperature in May in Galveston?

In May, the average ocean temperature is 77.5°F. Water temperature between 77°F and 84.2°F is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in May in Galveston?

In Galveston, Texas, the average day length in May is 13h and 38min.

When is the sunrise / sunset in May in Galveston?

In May, on the first day of the month, sunrise is at 6:37 am and sunset at 7:55 pm. On the last day of the month, in Galveston, sunrise is at 6:20 am and sunset at 8:13 pm CDT.

How long on average sun shines in May in Galveston?

In Galveston, the average sunshine duration in May is 10.3h.

When is the highest UV index in Galveston?

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

How high is the UV index in May in Galveston?

In Galveston, the average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

73°F

79.3°F

84.7°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.7mph

12.8mph

11.6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

10.7

11.3

14.2

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

17.8

12.8

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Galveston, TX

Average high temperature in May: 79.3°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is January (59.7°F).

Average low temperature in May: 73.8°F

The month with the highest average low temperature is August (81.9°F).
The coldest month (with the lowest average low temperature) is January (51.6°F).

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Average pressure in May
Galveston, 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
Galveston, TX

Average wind speed in May: 12.1mph

The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (9.4mph).

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Average humidity in May
Galveston, TX

Average humidity in May: 79%

The months with the highest relative humidity are February and March (81%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in May
Galveston, TX

Average rainfall in May: 1.85"

The wettest month (with the highest rainfall) is September (4.29").
The driest months (with the least rainfall) are February and March (0.75").

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Average rainfall days in May
Galveston, TX

Average rainfall days in May: 11.3 days

The month with the highest number of rainy days is September (19.9 days).
The month with the least rainy days is January (10.1 days).

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Average snowfall days in May
Galveston, TX

Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average sea temperature in May
Galveston, TX

Average sea temperature in May: 77.5°F

The best month for swimming (with the highest average sea temperature) is August (87.2°F).
The coldest month (with the lowest average sea temperature) is January (56.5°F).

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Average daylight in May /
Average sunshine in May
Galveston, 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 2min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

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Average sunshine days in May
Galveston, TX

Average sunshine days in May: 17.8 days

The month with the most sunshine days is January (18.2 days).
The month with the least sunshine days is August (8.3 days).

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Average UV index in May
Galveston, 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).

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Average cloud cover in May
Galveston, TX

Average cloud cover in May: 30

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July, August and October (Cloud cover 26).

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Average visibility in May
Galveston, 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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May weather forecast
Galveston, TX

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