The best times to visit Downtown San Antonio for ideal weather are

February 12th to April 29th

or

October 8th to December 9th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.


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    Weather in Downtown San Antonio

    Temperature

    Average temperatures in Downtown San Antonio vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some hot weeks in the summer, with a very low chance of precipitation throughout the year. The area is somewhat temperate — in the 47th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Downtown San Antonio, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 101°F (38.3°C) with temperatures rarely dropping below 76°F (24.4°C) at night.

    Downtown San Antonio Temperatures (Fahrenheit)

    Key
    High
    Average
    Low

    Downtown San Antonio Temperatures (Celsius)

    Key
    High
    Average
    Low

    “Feels-Like” Temperatures

    The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

    Downtown San Antonio Perceived Temperature (F)

    Key
    High
    Average
    Low

    Downtown San Antonio Perceived Temperature (C)

    Key
    High
    Average
    Low

     

    Average Downtown San Antonio Temperatures by Month

    Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

    Show Fahrenheit

    MonthAvg. High (°F)Avg. Mean (°F)Avg. Low (°F)
    Jan65.451.840.8
    Feb70.856.745.9
    Mar77.263.652.5
    Apr83.870.760.1
    May89.177.167.1
    Jun95.283.173.5
    Jul96.38474.5
    Aug99.486.275.4
    Sep93.480.770.9
    Oct86.172.661.3
    Nov75.362.251.5
    Dec68.154.844.2

    Show Celsius

    MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
    Jan18.6114.9
    Feb21.613.77.7
    Mar25.117.611.4
    Apr28.821.515.6
    May31.725.119.5
    Jun35.128.423.1
    Jul35.728.923.6
    Aug37.430.124.1
    Sep34.127.121.6
    Oct30.122.616.3
    Nov24.116.810.8
    Dec20.112.76.8


     

    Precipitation (Rain or Snow)

    If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Downtown San Antonio are August, February, and then December. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early August. For example, on the week of July 30th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May with an average of 1 days of significant precipitation the week of May 21st.

    When can you find snow in Downtown San Antonio? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

    Chanceof Precipitation

    The graph below shows the % chance of rainy and snowy days in Downtown San Antonio.

    Key
    Days with precipitation

    Snow on the Ground

    The graph below shows the average snow on the ground in Downtown San Antonio (in).

    Key
    Snow depth

    Average Rain and Snow by Month

    Show Inches

    MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
    Jan10%02.8
    Feb7%00.8
    Mar13%02.3
    Apr11%02.4
    May14%04
    Jun10%01.9
    Jul14%02.2
    Aug7%01.8
    Sep14%02.7
    Oct10%02.8
    Nov9%01.6
    Dec8%00.9

    Show Centimeters

    MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
    Jan1007.1
    Feb702
    Mar1305.8
    Apr1106.1
    May14010.2
    Jun1004.8
    Jul1405.6
    Aug704.6
    Sep1406.9
    Oct1007.1
    Nov904.1
    Dec802.3

     

    Humidity and Wind

    Downtown San Antonio has some comfortably humid months, with slightly drier months on the other side of the year. The least humid month is August (48.7% relative humidity), and the most humid month is May (57.7%).

    Wind in Downtown San Antonio is usually calm. The windiest month is May, followed by April and March. May’s average wind speed of around 7.4 knots (8.5 MPH or 13.6 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late April where average top sustained speeds reach 15.1 knots, which is considered a moderate breeze.

    Relative Humidity (%)

    The graph below shows the average % humidity by month in Downtown San Antonio.

    Key
    Avg. Relative Humidity

    Wind

    The graph below shows wind speed (max and average) in knots.

    Key
    Max Sustained Wind
    Average Daily Wind

    Average Wind Speeds

    Show Wind Speeds

    All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

    MonthAvg. WindAvg. Wind FeelSustained High WindHigh Wind Feel
    Jan5.4Light breeze11.7Significant breeze
    Feb6.4Light breeze12.8Significant breeze
    Mar6.8Light breeze13.8Significant breeze
    Apr7.1Gentle breeze14.1Significant breeze
    May7.4Gentle breeze14Significant breeze
    Jun6.8Light breeze13.5Significant breeze
    Jul6.1Light breeze12.9Significant breeze
    Aug5.5Light breeze12.3Significant breeze
    Sep5Light breeze11.4Significant breeze
    Oct5.2Light breeze11.3Significant breeze
    Nov5.1Light breeze11.3Significant breeze
    Dec5.2Light breeze11.2Significant breeze

    Show Relative Humidity by Month

    MonthAvg. Relative Humidity
    Jan51.8%
    Feb51.4%
    Mar54.1%
    Apr54.2%
    May57.7%
    Jun56.7%
    Jul55.9%
    Aug48.7%
    Sep54.1%
    Oct52.1%
    Nov53.9%
    Dec55.6%

     

    Is it Safe to Travel to Downtown San Antonio?

    Our best data indicates this area is generally safe. As of Mar 17, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Mar 15, 2019.


     

    The Busiest and Least Crowded Months

    The busiest month for tourism in Downtown San Antonio, TX, US is July, followed by March and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Downtown San Antonio in November. Those willing to visit at these times will likely find it the least expensive month.

    Estimated Tourism by Month

     

    Most Popular Months to Visit

    Key
    Tourists Seeking Accommodations

    Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 49.7 in November means 49.7% of the tourists vs. July.


    Overall Downtown San Antonio Travel Experience by Season

    Spring (March through May)

    Humidity and temperatures combine to make this season feel warm. Highs range from 92.6°F (33.7°C) and 73.1°F (22.8°C) with warmer temperatures in the later months. Rain is rare with 3 to 4 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.

    Summer (June through August)

    The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 2 to 4 days of precipitation per month. June – August is the second busiest season for tourism in Downtown San Antonio, so lodging and other accommodations may cost slightly more.

    Fall (September through November)

    Fall daily highs range from 95.8°F (35.4°C) and 70.6°F (21.4°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 3 to 4 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

    Winter (December through February)

    Weather is too cold this time of year in Downtown San Antonio to be enjoyable for warm weather travelers. The average high during this season is between 75.5°F (24.2°C) and 62.8°F (17.1°C). On average, it rains or snows a smalll amount: 2 to 3 times per month. These times of year are fairly slow with tourists.

     

    Best Times to Travelthe United States › Downtown San Antonio, TX, US


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