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San Antonio River

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San Antonio River Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

San Antonio River year round climate

  • Spring (March–May): Average 67–78°F, mild and comfortable climate, with the most rainfall in April, and vibrant plant life. Common activities: outdoor picnics, cycling, visiting historical sites. Suggested clothing: light jacket, long-sleeved shirt, comfortable shoes.
  • Summer (June–August): Average 84–86°F, hot and dry, with less rainfall in some months. Common activities: swimming, relaxing in shaded areas, visiting museums and art galleries. Suggested clothing: light and breathable clothing, hat, sunglasses.
  • Autumn (September–November): Average 75–64°F, pleasant climate with gradually decreasing temperatures. Common activities: hiking, viewing autumn leaves (certain tree species), outdoor concerts. Suggested clothing: light jacket, long-sleeved or short-sleeved shirt, depending on the weather.
  • Winter (December–February): Average 57–60°F, mild and dry, with occasional rainfall. Common activities: visiting indoor attractions, enjoying hot drinks, shopping. Suggested clothing: light jacket, long-sleeved shirt, warm clothing.

San Antonio River climatological average

Annual average temperature: approx. 73.4°F / Annual rainfall: approx. 699 mm / Summer humidity: 60%–70% / Rainiest month: April

San Antonio River monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
55.6°F
96.2
February
60.6°F
31.4
March
67.3°F
48.8
April
71.2°F
162.1
May
78.4°F
102.2
June
84.9°F
34.3
July
85.8°F
33
August
86.7°F
72
September
82.8°F
14.3
October
75°F
25.5
November
64.2°F
55.2
December
57.9°F
24.7

San Antonio River weather for the next seven days

5/7
Thursday
Overcast
76.6°F/63.7°F
5/8
Friday
Moderate rain
81.5°F/68.5°F
5/9
Saturday
Heavy rain
87.4°F/64.1°F
5/10
Sunday
Sunny
94.8°F/70.6°F
5/11
Monday
Patchy rain nearby
81.8°F/67.6°F
5/12
Tuesday
Partly Cloudy
86.4°F/63.8°F
5/13
Wednesday
Sunny
91.2°F/69.2°F

San Antonio River Frequently Asked Questions and Useful Information for Travel

How much does it cost to ride the riverboat in San Antonio?

The GO RIO River Cruises typically cost $13.50 for adults with a valid ID. These scenic cruises last about 35 minutes and operate daily from morning until evening, offering a wonderful way to experience the San Antonio River.

What is the best time to visit the San Antonio River Walk?

The most pleasant times to visit the San Antonio River Walk are generally in the spring, from March to May, and in the fall, from September to November. During these seasons, the weather is mild and ideal for enjoying the outdoor charm of the River Walk.

How long is the boat ride on the San Antonio River Walk?

The standard GO RIO boat tour on the San Antonio River Walk lasts approximately 35 minutes. This duration allows ample time to connect with the city's rich culture, history, architecture, and enduring charm as you glide along the water.

How many miles long is the San Antonio Riverwalk?

The San Antonio River Walk spans an impressive 15 miles in total length. While it extends for 15 miles, approximately 5 miles of this vibrant pathway flow through the heart of downtown San Antonio, offering numerous points of interest.

What can I see on a San Antonio River boat tour?

A San Antonio River boat tour provides a unique perspective on the city's vibrant culture, fascinating history, stunning architecture, and timeless charm. You'll get to see diverse scenes and learn about the significance of this iconic waterway.