July Weather in San Antonio, Texas - 2025

San Antonio is situated at the headwaters of the San Antonio River on the Balcones Escarpment, in South-Central Texas. San Antonio was named by the 1691 Spanish expedition for Saint Anthony of Padua.  The first civilian settlement in Texas, San Antonio de Béxar was founded in 1718. It has a very rich cultural history which can be seen at different places as many of the city's early architectural and cultural elements still exist. This allows visitors to envision San Antonio's past stories first-hand. This city is a great place for visitors who are interested in learning about the history of the area.

Weather July 2025 in San Antonio Texas:

Generally, July in San Antonio will be quite hot, with an average temperature of around 93°F / 34°C. But due to the moderate humidity it can feel slightly uncomfortable for some. You can expect around 7 rainy days, with on average 1.1 inches / 27 mm of rain during the month of July.
Moderately uncomfortable (moderate humidity) with high temperatures
CC BY-SA 2.0 by Ken Lund

July weather in San Antonio Texas

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

Generally, July in San Antonio will be quite hot. Historical data shows that you can expect an average temperature of around 93°F / 34°C. But due to the moderate humidity it can feel slightly uncomfortable for some. During the night, it will cool down to around 71°F / 22°C. Many will prefer a location with air conditioning due to the high humidity level.

San Antonio has rainy days in July. You can expect around 7 rainy days, with on average 1.1 inches / 27 mm of rain during the whole month.

Average temperature
Average Sea temperature
Wintersun Comfort grade and huricane risk

The forecast for July 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.

July weather in San Antonio Texas in more detail

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

- What will the temperature be in San Antonio in July

Generally, you can expect in July an average temperature of 93°F / 34°C during the day and an average of 71°F / 22°C during the night. In July, 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 69°F / 21°C.

When looking at the whole year, January and December are the coldest months, with an average temperature of around 64°F / 18°C. August is the hottest month, with an average temperature of around 95°F / 35°C. When comparing July with the temperature in the month before and after, this is almost equal to June, which sees an average maximum temperature of around 91°F / 33°C. And almost equal to August, which sees an average maximum temperature of around 95°F / 35°C.

Day and night temperature variation for San Antonio during the year.
Day and night temperature variation for San Antonio 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 100°F / 38°C. January and December are the coldest months, with a temperature of around 78°F / 26°C. When comparing July with the temperature in the month before and after, this is equal to June, which sees an average maximum temperature of around 98°F / 37°C. And almost equal to August, which sees an average maximum temperature of around 100°F / 38°C.

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

Day and night temperature variation for San Antonio during the year.
Day and night temperature variation for San Antonio during the year.

- Can you expect rain in July in San Antonio?

Generally, you can expect about 7 rain days in July, with on average 1.1 inches / 27 mm of rain.

When looking at the whole year, August is the dryest month, with an average rainfall of around 0.7 inches / 19 mmmm. January is the wettest month, with an average rainfall of around 1.7 inches / 44 mmmm. When comparing July with the month before and after, this is slightly less than June, which sees around 1.2 inches / 30 mm of rain. And more than August, which sees around 0.7 inches / 19 mm of rain

Rain days for San Antonio during the year.
Rain days for San Antonio during the year.

If we look at the number of days with rain, August is the month with the least amount of rain days with around 7 days. March is the month with the most rain days with around 10 days. When comparing July with the month before and after, this is almost equal to June, which sees an average of between 7 and 8 days of rain. And almost equal to August, which sees around 7 days of rain

- What will the water temperature be in San Antonio for July

You can expect in July, the water temperature for San Antonio to be between 87°F / 31°C and 84°F / 29°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 July with the month before and after, July has a water temperature almost equal to June, with a water temperature of around 87°F / 31°C. And almost equal to the water temperature from August, that is around 89°F / 32°C.

Water temperature for San Antonio during the year.
Water temperature for San Antonio during the year.

- Can you expect in July a lot of sunny days in San Antonio

Generally, you can expect around 13 sunny days in July and around 17 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 an average of between 16 and 17 sunny days. May is the month with the lowest number of sunny days, with an average of between 6 and 7 sunny days. When comparing July with the number of sunny days in the month before and after, it is slightly higher than June, with around 8 sunny days. And slightly less than August, with an average of between 16 and 17 sunny days

The number of sunny, partly sunny, and cloudy days for San Antonio
The number of sunny, partly sunny, and cloudy days for San Antonio

We have looked at the sunny days in San Antonio. Let's also look at the cloudy or overcast days. December is the month with the highest number of cloudy days, with an average of between 10 and 11 cloudy days. August is the month with the lowest number of cloudy days, with an average of between 1 and 2 cloudy days. When comparing July with the number of cloudy days in the month before and after, it is almost equal to June, with an average of between 1 and 2 cloudy days. And almost equal to August, with an average of between 1 and 2 cloudy days

- Will it be comfortable in July in San Antonio?

Generally, July in San Antonio will be moderately humid, and can feel slightly uncomfortable for some.

We use the humidity and temperature in San Antonio 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 July with the month before and after, this is almost equal to June, which has a Wintersun Comfort level of "slightly uncomfortable" (moderately humid). And almost equal to August, which has a Wintersun Comfort level of "slightly uncomfortable" (moderately humid)

Wintersun Expert Humidity / Comfort level for San Antonio
Wintersun Expert Humidity / Comfort level for San Antonio

What to do in San Antonio Texas in July

San Antonio is an important tourist location. There are many places that you can visit in the area. Some of these include:

  • Majestic Theater: The Majestic Theater takes center stage as one of the country's most ornate performing arts facilities. Established in 1929, the Majestic is one of San Antonio's first locations for live performing arts and is located in the heart of downtown San Antonio.
  • The Witte Museum: Nature, science, and culture meet at The Witte Museum. Massive exhibits of dinosaurs, People of the Pecos and Texas Wild, and other rotating exhibitions occupy the recently renovated space with history, storytelling, and interactive family-friendly fun.
  • San Antonio Missions National Historical Park: This is where the city's magnificent history meets national parks. Visit the San Antonio Missions National Historical Park to learn the stories of people who came into the Spanish missions to live in the 1700s.
  • San Antonio Museum of Art: Travel around the world with a visit to the San Antonio Museum of Art (SAMA). The museum is renowned for owning the most comprehensive ancient Greek, Roman, and Egyptian art collections in the Southern United States.
  • Spanish Governor's Palace: is A National Historic Landmark in the heart of downtown. Visit the Spanish Governor's Palace, the last visible trace of the Presidio San Antonio de Bexar, and the only surviving model of an aristocratic 18th-century Spanish Colonial townhouse in Texas. Upon its completion in 1749, the house served as the Commandancia, or residence and working office, of the Captain of the Presidio.

Is it humid in San Antonio Texas in July?

A lot of people ask interested in the humidity or relative humidity for San Antonio Texas in July. 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 July in San Antonio, 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 San Antonio 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 July, you can expect that San Antonio 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 be moderately humid, and can feel slightly uncomfortable for some. In the graph, you can see that there is a significant difference between the most comfortable and most uncomfortable months

Humidity level for San Antonio
Humidity level for San Antonio

Is July a good time to go to San Antonio Texas?

Trying to answer the question of whether July is a good time to go to San Antonio 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 San Antonio in July, we can see that it will be too hot for a lot of visitors. In July, you can expect it to be quite hot, with an average temperature of around 93°F / 34°C. But due to the moderate humidity it can feel slightly uncomfortable for some. During the night, it will be around 71°F / 22°C.

As the number of overcast days is not high, you can enjoy the sun with around 13 sunny days and 17 partly sunny days.

The last aspect we will look at is rain. You can expect around 7 rainy days, with on average 1.1 inches / 27 mm of rain during July. 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 July in San Antonio 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 San Antonio Texas in July?

In San Antonio, it does not rain all day in July. You can expect around 7 rainy days, with on average 1.1 inches / 27 mm of rain during the month.

Another way of looking at the rain is the number of sunny days. For San Antonio Texas, there are, on average 13 sunny days and 17 partly sunny days in July. That clearly shows that it is not raining all the time.

Is July the rainiest month in San Antonio Texas?

July is not the month with the most rainy days, and not the month with the most rain.

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

March is the month with the the highest number of rainiest days. On average, you can expect 10 days with rain. August is the month with the lowest number of rainy days, with aproximately 7 days.

March is the month with the most rain. This is not equal as the one with the most rainy days. On average, you can expect 1.7 inches / 44 mm of rain. August is the month with the least amount of rain. This is not the same month as the one with the lowest number of rainy days. You can expect approximately 0.7 inches / 19 mm of rain.

Is July the most sunniest month in San Antonio Texas?

July is not the month with the most sunny days, not 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 San Antonio, 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 13 sunny days, and 17 partly suny days. May is the month with the lowest number of sunny days.

August 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. August 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 San Antonio Texas

Weather in San Antonio Texas in other months

What to do in San Antonio Texas for each month

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