May weather forecast
Austin, TX

The beautiful Lady Bird Lake passing through the city skyscrapers of Austin city, Texas
The beautiful Lady Bird Lake passing through the city skyscrapers of Austin city, Texas

Weather in May

The last month of the spring, May, is another warm month in Austin, Texas, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 66°F (18.9°C).

Temperature

In Austin, the average high-temperature in May slightly increases from 77.2°F (25.1°C) in April to a still warm 83.8°F (28.8°C). In May, the average low-temperature is 66°F (18.9°C).

Heat index

The average heat index in May is evaluated at a tropical 91.8°F (33.2°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, clothing, wind), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

With an average relative humidity of 75%, May is the most humid month in Austin, Texas.

Rainfall

May is the month with the most rainfall. Rain falls for 16.2 days and accumulates 3.78" (96mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

The average length of the day in May is 13h and 41min.
On the first day of May, sunrise is at 6:47 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 8:27 pm CDT.

Sunshine

The average sunshine in May in Austin is 8.2h.

UV index

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in May interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in May in Austin?

In Austin, Texas, in May, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 66°F (18.9°C). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is evaluated at 91.8°F (33.2°C).

What is the most humid month in Austin?

May is the most humid month in Austin, Texas, with an average relative humidity of 75%.

What is the average humidity in May in Austin?

In Austin, the average relative humidity in May is 75%.

What is the wettest month in Austin?

The month with the most rainfall in Austin is May, when the rain falls for 16.2 days and typically aggregates up to 3.78" (96mm) of precipitation.

How many days does it rain in May in Austin?

In Austin, in May, during 16.2 rainfall days, 3.78" (96mm) of precipitation is typically accumulated.

When it does not snow in Austin?

In Austin, snow does not fall in March through December.

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

In May, the average day length in Austin is 13h and 41min.

What time are sunrise and sunset in May in Austin?

On the first day of May in Austin, sunrise is at 6:47 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 8:27 pm CDT.

How long on average sun shines in May in Austin?

In Austin, Texas, the average sunshine duration in May is 8.2h.

What is the UV index reading in May in Austin?

In May, the average daily maximum UV index in Austin, Texas, is 6. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Austin, TX

Average temperature in May - Austin, TX
  • Average high temperature in May: 83.8°F

The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (59.4°F).

  • Average low temperature in May: 66°F

The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (42.6°F).

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Average pressure in May
Austin, TX

Average pressure in May - Austin, TX
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Austin, TX

Average wind speed in May - Austin, TX
  • Average wind speed in May: 8.6mph

The windiest month (with the highest average wind speed) is March (9.2mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).

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Average humidity in May
Austin, TX

Average humidity in May - Austin, TX
  • Average humidity in May: 75%

The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (59%).

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Average rainfall in May
Austin, TX

Average rainfall in May - Austin, TX
  • Average rainfall in May: 3.78"

The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.91").

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Average rainfall days in May
Austin, TX

Average rainfall days in May - Austin, TX
  • Average rainfall days in May: 16.2 days

The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in May
Austin, TX

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

The month with the highest snowfall is January (0.4").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Austin, TX

Average snowfall days in May - Austin, TX
  • Average snowfall days in May: 0 days

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

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

Average daylight in May / Average sunshine in May - Austin, TX
  • Average daylight in May: 13h and 41min

The month with the longest days is June (Average daylight: 14h and 4min).
The month with the shortest days is December (Average daylight: 10h and 14min).

  • Average sunshine in May: 8h and 12min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in May
Austin, TX

Average sunshine days in May - Austin, TX
  • Average sunshine days in May: 11.1 days

The month with the most sunshine days is January (20.5 days).
The month with the least sunshine days is May (11.1 days).

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Average UV index in May
Austin, TX

Average UV index in May - Austin, TX
  • Average UV index in May: 6

The months with the highest UV index are 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
Austin, TX

Average cloud cover in May - Austin, TX
  • Average cloud cover in May: 45

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in May
Austin, TX

Average visibility in May - Austin, 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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