May weather forecast
Alvin, TX

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Weather in May

The last month of the spring, May, is also a moderately hot month in Alvin, Texas, with temperature in the range of an average high of 83.1°F (28.4°C) and an average low of 71.2°F (21.8°C).

Temperature

In Alvin, the average high-temperature in May slightly increases from 76.6°F (24.8°C) in April to a still warm 83.1°F (28.4°C). Throughout the month of May, the average temperature in Alvin dips to a pleasant 71.2°F (21.8°C) at night.

Heat index

The heat index in May is estimated at a hot 91.4°F (33°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

In May, the average relative humidity in Alvin, Texas, is 77%.

Rainfall

In Alvin, in May, during 14.3 rainfall days, 4.02" (102mm) of precipitation is typically accumulated. Throughout the year, in Alvin, there are 180.4 rainfall days, and 38.39" (975mm) of precipitation is accumulated.

Snowfall

In Alvin, Texas, snow does not fall in February through December.

Daylight

In May, the average length of the day is 13h and 38min.
On the first day of the month, sunrise is at 6:38 am and sunset at 7:57 pm. On the last day of May, in Alvin, sunrise is at 6:21 am and sunset at 8:15 pm CDT.

Sunshine

In May, the average sunshine is 9.9h.

UV index

The months with the highest UV index in Alvin are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In May, the average maximum UV index of 7 translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Alvin during May?

An average high-temperature, in May, in Alvin, is 83.1°F (28.4°C) and the average low-temperature is 71.2°F (21.8°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in May is estimated at 91.4°F (33°C).

What is the average humidity in May in Alvin?

The average relative humidity in May in Alvin is 77%.

How many days does it rain in May in Alvin?

In Alvin, in May, it is raining for 14.3 days, with typically 4.02" (102mm) of accumulated precipitation.

When it does not snow in Alvin?

In Alvin, Texas, snow does not fall in February through December.

How many hours of daylight does Alvin have in May?

The average day length in May in Alvin is 13h and 38min.

What time are sunrise and sunset in May in Alvin?

In May, on the first day of the month, sunrise is at 6:38 am and sunset at 7:57 pm. On the last day of the month, in Alvin, sunrise is at 6:21 am and sunset at 8:15 pm CDT.

How many hours of sunshine does Alvin have in May?

In Alvin, the average sunshine duration in May is 9.9h.

What is the month with the highest UV index in Alvin?

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

What is the UV index reading in May in Alvin?

The average daily maximum UV index in May in Alvin, Texas, is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from 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
Alvin, TX

Average temperature in May - Alvin, TX
  • Average high temperature in May: 83.1°F

The warmest month (with the highest average high temperature) is August (90.9°F).
The month with the lowest average high temperature is January (60.8°F).

  • Average low temperature in May: 71.2°F

The month with the highest average low temperature is August (78.6°F).
The coldest month (with the lowest average low temperature) is January (48.2°F).

Average pressure in May
Alvin, TX

Average pressure in May - Alvin, 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).

Average wind speed in May
Alvin, TX

Average wind speed in May - Alvin, TX
  • Average wind speed in May: 9.5mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).

Average humidity in May
Alvin, TX

Average humidity in May - Alvin, TX
  • Average humidity in May: 77%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in May
Alvin, TX

Average rainfall in May - Alvin, TX
  • Average rainfall in May: 4.02"

The wettest month (with the highest rainfall) is September (5.94").
The driest month (with the least rainfall) is February (1.81").

Average rainfall days in May
Alvin, TX

Average rainfall days in May - Alvin, TX
  • Average rainfall days in May: 14.3 days

The month with the highest number of rainy days is September (20.2 days).
The month with the least rainy days is January (12.4 days).

Average snowfall in May
Alvin, TX

Average snowfall in May - Alvin, TX
  • Average snowfall in May: 0"

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

Average snowfall days in May
Alvin, TX

Average snowfall days in May - Alvin, 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, October, November and December (0 days).

Average daylight in May /
Average sunshine in May
Alvin, TX

Average daylight in May / Average sunshine in May - Alvin, 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: 9h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

Average sunshine days in May
Alvin, TX

Average sunshine days in May - Alvin, TX
  • Average sunshine days in May: 14.1 days

The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is September (8.3 days).

Average UV index in May
Alvin, TX

Average UV index in May - Alvin, TX
  • Average UV index in May: 7

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

Average cloud cover in May
Alvin, TX

Average cloud cover in May - Alvin, TX
  • Average cloud cover in May: 34

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 26).

Average visibility in May
Alvin, TX

Average visibility in May - Alvin, 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).

Alvin, Texas, USA

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