May Weather in Austin, Texas - 2025

Austin is the capital of the state of Texas. In 2019, Austin topped the ranks as the #1 city for jobs and residence in the USA, according to Forbes. It was nicknamed "Silicon Hills" due to its many high tech companies, similar to Silicon Valley. The first known residents of Austin were dated back to the ice age and its large, extensive history can be found in different recreational areas. The city is famous for its live music festivals and food. It is filled with culture and diversity, providing better living opportunities to the people. At dusk, portions of the central city are lighted by "artificial moonlight" from mercury vapor lamps atop 1750 meter (164 feet) tall towers.

Weather May 2025 in Austin Texas:

Generally, May in Austin will be quite hot, with an average temperature of around 89°F / 32°C. But due to the moderate humidity it can feel slightly uncomfortable for some. You can expect around 12 rainy days, with on average 1.8 inches / 45 mm of rain during the month of May.
Moderately uncomfortable (moderate humidity) with high temperatures
Sk5893 - CC BY-SA 4.0

May weather in Austin Texas

To get a good overview of the type of weather you can expect in May in Austin, we will look at the day and night temperature, minimum and maximum water temperature, and if May is comfortable or humid

Generally, May in Austin will be quite hot. Historical data shows that you can expect an average temperature of around 89°F / 32°C. But due to the moderate humidity it can feel slightly uncomfortable for some. During the night, it will cool down to around 66°F / 19°C. Many will prefer a location with air conditioning due to the high humidity level.

Austin has its share of rainy days in May. You can expect around 12 rainy days, with on average 1.8 inches / 45 mm of rain during the whole month.

Average temperature
Average Sea temperature
Wintersun Comfort grade and huricane risk

The forecast for May 2025 is based on historical data and are averages. They will give a good indication what you can expect, but the daily temperature and rain will fluctuate during the month.

May weather in Austin Texas in more detail

To get a better feeling for the type of weather, you can expect in May in Austin, we will look at the temperature, rain, wind, humidity, water temperature, and sun and clouds

- What will the temperature be in Austin in May

Generally, you can expect in May an average temperature of 89°F / 32°C during the day and an average of 66°F / 19°C during the night. In May, during the warmest part of the afternoon, the temperature can often get as high as 98°F / 37°C, and at the end of the night, it can get as low as 51°F / 11°C.

When looking at the whole year, January and December are the coldest months, with an average temperature of around 64°F / 18°C. July and August are the hottest months, with an average temperature of around 96°F / 36°C. When comparing May with the temperature in the month before and after, this is slightly higher than April, which sees an average maximum temperature of around 82°F / 28°C. And almost equal to June, which sees an average maximum temperature of around 93°F / 34°C.

Day and night temperature variation for Austin during the year.
Day and night temperature variation for Austin during the year.

But average temperatures only tell half of the story. It is also good to check the maximum and minimum temperatures. When looking at the whole year, August is the hottest month, with a temperature of around 104°F / 40°C. December is the coldest month, with a temperature of around 78°F / 26°C. When comparing May with the temperature in the month before and after, this is almost equal to April, which sees an average maximum temperature of around 95°F / 35°C. And almost equal to June, which sees an average maximum temperature of around 102°F / 39°C.

In the following graph, you can see how many cold and hot days you can expect in Austin each month:

Day and night temperature variation for Austin during the year.
Day and night temperature variation for Austin during the year.

- Can you expect rain in May in Austin?

Generally, you can expect about 12 rain days in May, with on average 1.8 inches / 45 mm of rain.

When looking at the whole year, July is the dryest month, with an average rainfall of around 0.9 inches / 24 mmmm. May and October are the wettest months, with an average rainfall of around 1.8 inches / 45 mm. When comparing May with the month before and after, this is a lot more than April, which sees around 1.1 inches / 29 mm of rain. And more than June, which sees around 1.4 inches / 35 mm of rain

Rain days for Austin during the year.
Rain days for Austin during the year.

If we look at the number of days with rain, November is the month with the least amount of rain days with around 7 days. May is the month with the most rain days with an average of between 11 and 12 days. When comparing May with the month before and after, this is slightly more than April, which sees an average of between 8 and 9 days of rain. And slightly more than June, which sees around 9 days of rain

- What will the water temperature be in Austin for May

You can expect in May, the water temperature for Austin to be between 82°F / 28°C and 71°F / 22°C.

To compare the water temperature we will use the maximum water temperature. You can expect this temperature on a more sunny day, close to the shore, when the wind does not mix the relatively warmer and colder water.

August has the highest water temperature, with around 89°F / 32°C. January has the lowest water temperature, with around 60°F / 16°C. When comparing the water temperature from May with the month before and after, May has a water temperature slightly higher than April, with a water temperature of an average of between 77°F / 25°C and 78°F / 26°C. And slightly less than the water temperature from June, that is around 87°F / 31°C.

Water temperature for Austin during the year.
Water temperature for Austin during the year.

- Can you expect in May a lot of sunny days in Austin

Generally, you can expect around 7 sunny days in May and around 21 partly sunny days. The remaining days will be cloudy.

When looking at the whole year, August is the month with the highest number of sunny days, with around 16 sunny days. May is the month with the lowest number of sunny days, with around 7 sunny days. When comparing May with the number of sunny days in the month before and after, it is slightly lower than April, with an average of between 9 and 10 sunny days. And almost equal to June, with around 9 sunny days

The number of sunny, partly sunny, and cloudy days for Austin
The number of sunny, partly sunny, and cloudy days for Austin

We have looked at the sunny days in Austin. Let's also look at the cloudy or overcast days. December is the month with the highest number of cloudy days, with around 10 cloudy days. July is the month with the lowest number of cloudy days, with an average of between 1 and 2 cloudy days. When comparing May with the number of cloudy days in the month before and after, it is almost equal to April, with around 4 cloudy days. And almost equal to June, with around 2 cloudy days

- Will it be comfortable in May in Austin?

Generally, May in Austin will be moderately humid, and can feel slightly uncomfortable for some.

We use the humidity and temperature in Austin to calculate the Wintersun Expert Comfort level for each month. The lower the Wintersun Expert Comfort level, the more comfortable it will be. Only for certain people, extremely dry air can feel slightly uncomfortable.

When looking at the whole year, November has the lowest humidity, with a Wintersun Expert comfort level of "comfortable" (very dry air). June has the highest humidity, with a Wintersun Expert comfort level of "slightly uncomfortable" (moderately humid). When comparing May with the month before and after, this is slightly more than April, which has a Wintersun Comfort level of "comfortable" (not very humid). And almost equal to June, which has a Wintersun Comfort level of "slightly uncomfortable" (moderately humid)

Wintersun Expert Humidity / Comfort level for Austin
Wintersun Expert Humidity / Comfort level for Austin

What to do in Austin Texas in May

Austin is an important tourist or snowbird location. There are many places to visit in the area. Some of these include:

  • Blanton Museum of Arts: It is one of the foremost university art museums in the country and holds the largest public collection in Central Texas. It is recognized for its modern and contemporary American and Latin American art, Italian Renaissance and Baroque paintings, an encyclopedic collection of prints and drawings, and Ellsworth Kelly's Austin.
  • Zilker Botanical Gardens: Tucked away on 26 acres of Austin's Zilker Metropolitan Park, the Zilker Botanical Garden is a lush sanctuary of koi-filled ponds, live oaks and prickly cactuses of all shapes and sizes. It is composed of multiple themed gardens including the Taniguchi Japanese Garden.
  • Susanna Dickinson Museum: This museum is the one-time home of the "Messenger of the Alamo," popularly known as Susanna Dickinson Hannig, a survivor of the 1836 Battle of the Alamo, who carried the news of its fall to General Sam Houston. Her eyewitness account of the battle remains a benchmark for historians.
  • Mayfield Park and Nature Preserve: Walking into the Historic Mayfield Park is like stepping into a tranquil oasis. Lush gardens, towering palm trees, and brilliant peacocks surround lily and koi fish-filled ponds. There are 21 acres of scenic hiking trails teeming with wildlife that surround the estate.
  • LBJ Presidential Library: Since the Library was dedicated over 40 years ago, with Presidents Johnson and Nixon in attendance, it has served as an incomparable venue for memorable events with Presidents, First Ladies, and foreign Heads of state, amongst other dignitaries and celebrities.

Is it humid in Austin Texas in May?

A lot of people ask interested in the humidity or relative humidity for Austin Texas in May. But the real question they want to ask is not about humidity but the amount of moisture in the air. Or better, about comfort. Will it be comfortable in May in Austin, or will high humidity make it uncomfortable.

To answer this question, we have to look at the dew point. Relative humidity can change a lot in Austin during the day and night, as it changes when the amount of moisture changes and, but also when the temperature changes. It is a lot less reliable for comfort. Where the dew point only varies with the amount of moisture in the air.

Looking at the dew point, we can see that for the month of May, you can expect that Austin will be moderately humid, and can feel slightly uncomfortable for some.

November is the month with the most comfort. It will have very dry air, and can feel somewhat uncomfortable for some people. But will be fine for most.. June is the most uncomfortable month. It will have a very high humidity, and can feel very uncomfortable. In the graph, you can see that there is a significant difference between the most comfortable and most uncomfortable months

Humidity level for Austin
Humidity level for Austin

Is May a good time to go to Austin Texas?

Trying to answer the question of whether May is a good time to go to Austin is not as easy as it first seems. Some people like colder weather, and others prefer a warmer climate. Some are fine with some humidity, and others are not. If your location has air conditioning, the night temperature is less important.

These are some examples. I will try to answer the question with a more generic person in mind. The more detailed information in this article should be enough to check further if this applies to you as well.

If we look at the average temperature for Austin in May, we can see that it will be too hot for a lot of visitors. In May, you can expect it to be quite hot, with an average temperature of around 89°F / 32°C. But due to the moderate humidity it can feel slightly uncomfortable for some. During the night, it will be around 66°F / 19°C.

As the number of overcast days is not high, you can enjoy the sun with around 7 sunny days and 21 partly sunny days.

The last aspect we will look at is rain. You can expect around 12 rainy days, with on average 1.8 inches / 45 mm of rain during May. More then 5 days rain per month makes the chance higher you will see some rain during a shorter stay. But a day with rain does not mean a day you can not enjoy.

We have looked at the average day temperature, the night temperature, humidity, the number of overcast days, and the rain. We think that May in Austin Texas is not the most optimal destination. But that doesn't mean it is not a good time for you to go. As said before, each visitor has their own preferences when it comes to the weather.

Does it rain all day in Austin Texas in May?

In Austin, it does not rain all day in May. You can expect around 12 rainy days, with on average 1.8 inches / 45 mm of rain during the month.

Another way of looking at the rain is the number of sunny days. For Austin Texas, there are, on average 7 sunny days and 21 partly sunny days in May. That clearly shows that it is not raining all the time.

Is May the rainiest month in Austin Texas?

May is the month with the most rainy days, and it is the month with the most rain.

To answer what the rainiest month is in Austin, we will both look at the month with the most rain, and the month with the highest number of rainy days.

May is the month with the the highest number of rainiest days. On average, you can expect 12 days with rain. November is the month with the lowest number of rainy days, with aproximately 7 days.

May is the month with the most rain. This is not equal as the one with the most rainy days. On average, you can expect 1.8 inches / 45 mm of rain. November is the month with the least amount of rain. These are not the same months as the ones with the lowest number of rainy days. You can expect approximately 0.9 inches / 24 mm of rain.

Is May the most sunniest month in Austin Texas?

May is not the month with the most sunny days, it is the month with the most partly sunny days, and it is not the month with the lowest number of overcast days.

To answer what the sunniest month is in Austin, we will of course look at the month with the most sunniest days, but also look at the month with the biggest number of days that are sunny or partly sunny.

August is the month with the highest number of sunny days. On average, you can expect 7 sunny days, and 21 partly suny days. May is the month with the lowest number of sunny days.

July is the month with the highest number of sunny days and partly sunny days combined. While February is the month with the lowest number of sunny days and partly sunny days combined.

The last thing we will look at is the number of overcast days. July is the month with the lowest number of overcast days. While December is the month with the highest number of overcast days.

More information about Austin Texas

Weather in Austin Texas in other months

What to do in Austin Texas for each month

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