Water Damage Restoration in San Antonio, TX
San Antonio by the numbers: 77 flood report days from 2016 to 2025, 22 freezing nights a year, 12 federal disaster declarations since 2016. Below: first steps, the records, Texas insurance rules and costs.
Updated October 31, 2026
First Steps for Water in a Home in San Antonio
- Burst pipe: shut the main water valve, then open the lowest faucet to drain the lines (burst pipe steps).
- Stay clear of wet outlets and cords.
- Photograph the damage, then call your insurer.
How Often San Antonio Floods
The 8 counties of the San Antonio metro area logged flooding on 77 days from 2016 to 2025 (279 NOAA reports), May most often.
At the San Antonio Incarnate Word gauge, May is the wettest month with 4.4 inches on average.
Hurricanes, tropical storms or storm surge added 1 report day.
| Month | Flood report days | Normal precipitation (in) |
|---|---|---|
| January | 2 | 2.2 |
| February | 1 | 1.9 |
| March | 3 | 2.4 |
| April | 9 | 2.3 |
| May | 19 | 4.4 |
| June | 9 | 3.6 |
| July | 8 | 2.4 |
| August | 10 | 2.4 |
| September | 10 | 3.9 |
| October | 4 | 3.9 |
| November | 1 | 2.5 |
| December | 1 | 2.1 |
| County | Flood report days | Reports |
|---|---|---|
| Bexar County | 55 | 180 |
| Comal County | 22 | 31 |
| Bandera County | 14 | 25 |
| Guadalupe County | 9 | 12 |
| Kendall County | 9 | 9 |
| Medina County | 8 | 10 |
| Atascosa County | 5 | 5 |
| Wilson County | 5 | 7 |
Freezing Nights in San Antonio
San Antonio averages 22 nights a year at or below 32°F (San Antonio Incarnate Word station). NOAA counted 15 winter storm, ice or extreme cold days in the 8 counties of the San Antonio metro area from 2016 to 2025.
Unheated crawl spaces, attics and garages freeze first (Red Cross); keep the heat at 55°F or more (IBHS).
Storms and Disasters in San Antonio
The 8 counties of the San Antonio metro area were named in 12 federal weather or fire declarations since 2016 (OpenFEMA).
Notable NOAA storm reports
- June 12, 2025: Flash flood (Bexar County)Training of thunderstorms with intense rainfall rates produced a swath of 3-8 inches of rain across San Antonio. Several vehicles were swept off the Loop 410 access road into Beitel Creek.
- March 21, 2022: Tornado, EF2 (Guadalupe County)An NWS Storm Survey team determined a tornado caused EF-2 damage along a 7.5 mile track from 3 miles ESE of Kingsbury to 3 miles ESE of Fentress in Caldwell County. Maximum winds were estimated at 115 mph.
- April 28, 2021: Hail, 6.42 inch hail (Medina County)A NWS storm survey team and employees from the Insurance Institute for Business and Home Safety (IBHS) conducted official measurements of a gargantuan hailstone.
- August 26, 2017: Tropical storm (Comal County)Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th.
- February 19, 2017: Tornado, EF2 (Bexar County)A tornado formed near San Pedro Ave. at the San Pedro Golf course and moved northeastward while strengthening to an EF1 near Jackson-Keller Rd. As it got to Linda Dr.
Federal disaster declarations
- September 1, 2026: Severe Storms, Straight-Line Winds, Tornadoes, And FloodingFlood, FEMA DR-4935
- July 18, 2026: FloodingFlood, FEMA EM-3649
- July 6, 2025: Severe Storms, Straight-Line Winds, And FloodingFlood, FEMA DR-4879
- March 5, 2025: Duke FireFire, FEMA FM-5553
- May 17, 2024: Severe Storms, Straight-Line Winds, Tornadoes, And FloodingFlood, FEMA DR-4781
- April 21, 2023: Severe Winter StormWinter Storm, FEMA DR-4705
- February 19, 2021: Severe Winter StormsSevere Ice Storm, FEMA DR-4586
- February 14, 2021: Severe Winter StormSevere Ice Storm, FEMA EM-3554
San Antonio Housing at a Glance
Census figures for the city of San Antonio (American Community Survey, 2020 to 2024): 612,901 housing units, a median build year of 1985, 43% built before 1980, 29% before 1970, 52% owner occupied.
Texas Insurance Rules for Water Claims
Texas law gives an insurer 15 business days to confirm it received a claim and, once it has what it needs, 15 business days to decide whether to pay, extendable by 45 days with a reason (Texas Department of Insurance, claim deadlines).
Claim problems in Texas go to the Texas Department of Insurance.
Flood damage needs a separate flood policy, which typically starts 30 days after purchase (FloodSmart). Look up San Antonio flood zones on FEMA's flood maps.
Restoration Cost Guide for San Antonio
| Typical range (national) | Cost |
|---|---|
| Most jobs | $1,305 to $5,707 |
| Sewage, per sq ft | $7 to $7.50 |
| Average insurer payout, water or freeze claim | $15,400 |
Sources: Bob Vila, May 2023; III, 2019 to 2023.
Areas Served Around San Antonio
The same 24/7 line covers the San Antonio metro area, including:
- San Antonio
- New Braunfels
- Schertz
- Seguin
- Cibolo
- Converse
- Boerne
- Universal City
Other Texas city guides
Questions
When is the first freeze in San Antonio?
The median first night at or below 32°F is November 28 and the median last is February 25 at the San Antonio Incarnate Word station (NOAA normals, 1991 to 2020).
Does Texas license mold assessment or remediation?
Yes. The Texas Department of Licensing and Regulation licenses mold assessment and mold remediation, and its rules require contractors doing that work to be licensed (TDLR, mold assessors and remediators FAQ).
How fast does mold start?
Dry wet materials within 24 to 48 hours (EPA).
Sources: NOAA Storm Events, NOAA normals, OpenFEMA, Census ACS, Texas Department of Insurance, claim deadlines, TDLR, mold assessors and remediators FAQ, EPA mold guide.