Austin
Texas, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Austin, TX

The beautiful Lady Bird Lake passing through the city skyscrapers of Austin city, Texas, in a beautiful sunrise panorama
The beautiful Lady Bird Lake passing through the city skyscrapers of Austin city, Texas, in a beautiful sunrise panorama
The last month of the spring, May, is also a moderately hot month in Austin, Texas, with average temperature fluctuating between 66°F (18.9°C) and 83.8°F (28.8°C).

Temperature

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

Heat index

In May, the average heat index is calculated to a tropical 91.8°F (33.2°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, differences in body mass, height, and shape, pregnancy). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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

The most humid month is May, with an average relative humidity of 75%.

Rainfall

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.

Snowfall

March through December are months without snowfall.

Daylight

In Austin, the average length of the day in May is 13.7h.

Sunshine

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

UV index

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for ordinary individuals.
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.

What is the temperature in May in Austin?

In Austin, in May, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 66°F (18.9°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in May is evaluated at 91.8°F (33.2°C).

What is the most humid month in Austin?

May is the most humid month, 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%.

How much does it rain in Austin in May?

In Austin, during May, the rain falls for 16.2 days and regularly aggregates up to 3.78" (96mm) of precipitation.

What is the rainiest month in Austin?

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

When it does not snow in Austin?

March through December are months without snowfall in Austin.

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

In Austin, Texas, the average length of the day in May is 13.7h.

How many hours of sunshine does Austin have in May?

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

What is the UV index reading in May in Austin?

The average daily maximum UV index in May in Austin is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
Average temperature in May - Austin, TX
  • Average high temperature in May: 28.8°C

The warmest month (with the highest average high temperature) is August (35.8°C).
The month with the lowest average high temperature is January (15.2°C).

  • Average low temperature in May: 18.9°C

The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is January (5.9°C).

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%).

Average rainfall in May - Austin, TX
  • Average rainfall in May: 96mm

The wettest month (with the highest rainfall) is May (96mm).
The driest month (with the lowest rainfall) is February (23mm).

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 lowest number of rainy days is January (8.2 days).

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

The month with the highest snowfall is January (10.2mm).
Months with the lowest snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

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

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

Average daylight in May / Average sunshine in May - Austin, TX
  • Average daylight in May: 13.7h

The month with the longest days is June (Average daylight: 14.1h).
The month with shortest days is December (Average daylight: 10.2h).

  • Average sunshine in May: 8.2h

Months with most sunshine are July and August (Average sunshine: 10.3h).
The month with least sunshine is December (Average sunshine: 5.3h).

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

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).