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San Antonio
San Antonio Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in San Antonio, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in San Antonio
75°F
TODAY
75°F
YESTERDAY
66°F
A WEEK AGO
As of today, the minimum water temperature in San Antonio ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Analysis, Historical Data, and Forecast of Water Temperature
Water Temperature Chart in San Antonio Over the Last 30 Days
Today the water temperature in San Antonio is higher than the same day in previous years. The water temperature range here in March is from 37°F to 75°F. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.
The forecasted water temperature values for San Antonio are presented in the table below.
The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.
Daily Water Temperature Chart
| Date | Current | Average | Forecast |
|---|---|---|---|
| Mar 20 | 66°F | 56°F | |
| Mar 21 | 66°F | 56°F | |
| Mar 22 | 67°F | 56°F | |
| Mar 23 | 67°F | 56°F | |
| Mar 24 | 67°F | 56°F | |
| Mar 25 | 67°F | 56°F | |
| Mar 26 | 75°F | 56°F | |
| Mar 27 | 75°F | 56°F | |
| Mar 28 | 56°F | 74°F | |
| Mar 29 | 56°F | 73°F | |
| Mar 30 | 56°F | 72°F | |
| Mar 31 | 56°F | 71°F | |
| Apr 1 | 50°F | 69°F | |
| Apr 2 | 50°F | 68°F | |
| Apr 3 | 50°F | 67°F | |
| Apr 4 | 50°F | 66°F |
Water Temperature Ranges in San Antonio by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 49°F | 61°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 51°F | 64°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 56°F | 75°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 41°F | 50°F | 61°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 70°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 65°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 68°F | 75°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 71°F | 73°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 64°F | 66°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 61°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 47°F | 61°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 46°F |
Monthly Water Temperature Histogram in San Antonio
San Antonio Weather
MARCH 28
59°F / 75°F
light drizzlerain: 95% | wind: 11 mph
MARCH 29
63°F / 88°F
fograin: 32% | wind: 14 mph
MARCH 30
64°F / 88°F
fograin: 3% | wind: 11 mph
MARCH 31
54°F / 86°F
partly cloudyrain: 10% | wind: 21 mph
Water Temperature in San Antonio: General Trends and Swimming Opportunities
San Antonio, Texas, is home to a variety of water bodies, with temperatures in rivers, lakes, and other natural features fluctuating based on the season. The San Antonio River, which flows through the heart of the city, typically has warmer water during the summer, ranging from 75°F to 85°F (24°C to 29°C). While the river is popular for leisurely activities like walking along the riverwalk and enjoying the city’s scenic views, swimming in the San Antonio River itself is generally not encouraged. The river is more suited for sightseeing and kayaking rather than swimming due to urban runoff and occasional water quality concerns.
In addition to the river, San Antonio has several notable swimming destinations, such as the natural springs of the San Marcos River, located just outside the city, or the city's many public pools. For those seeking cooler, clearer water, the springs in areas like the Guadalupe River maintain a temperature range of 68°F to 72°F (20°C to 22°C) year-round, providing a refreshing option for swimming, tubing, and canoeing. The area's lakes, including Braunig Lake and Calaveras Lake, also offer more controlled environments for swimming, with water temperatures typically ranging from 80°F to 90°F (27°C to 32°C) in the summer months, making them ideal for a day of swimming or boating in a more serene atmosphere.
Overall, while the San Antonio River is a scenic spot for other activities, the city's lakes, spring-fed rivers, and public pools are the best options for swimming in the area.
Geographical Location of San Antonio
Frequently Asked Questions About San Antonio and its Water Temperatures
What is the current water temperature in San Antonio?
The water temperature today in San Antonio is 75°F (23.8°C).
What is the water temperature in San Antonio during the summer months?
The average water temperature in San Antonio during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in San Antonio in May?
The average water temperature in San Antonio in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in San Antonio in September?
The average water temperature in San Antonio in September is typically between 52°F to 66°F (11°C to 19°C).
Is it possible to swim in any bodies of water in San Antonio (United States, Texas), and what are the available options for doing so?
Yes, it's possible to swim in various bodies of water in San Antonio, Texas. Options include public pools, water parks, local rivers such as the San Antonio River, and natural springs like the San Pedro Springs Park.