San Antonio, TX Lightning Map
Real-time lightning tracking for San Antonio, Texas. This city averages 42 thunderstorm days per year, making lightning awareness important for San Antonio residents and visitors.
Live data from NOAA GOES-19 GLM. San Antonio, TX. — quiet period. San Antonio, TX averages 42 thunderstorm days per year.
Data sourced from NOAA GOES-19 GLM and the Storm Prediction Center.
Real-Time Lightning Near San Antonio
Monitor live lightning strikes and approaching storms
Live Lightning Data for San Antonio
Download the iOS app for live alerts, then use this city page plus the nearby-lightning and alert guides to make faster weather and safety calls in San Antonio.
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Thunderstorm Season in San Antonio
When to expect lightning activity in San Antonio, TX
In San Antonio, thunderstorm season runs from May through October, with peak activity in June through September. The summer months bring daily afternoon thunderstorms fueled by humid tropical air and intense solar heating. July and August typically see the highest frequency of lightning strikes.
Compared to the national average of approximately 25 thunderstorm days per year, San Antonio sees 17 more days of thunderstorm activity. The Texas statewide average is 50 days.
Lightning Safety Tips for San Antonio
Essential guidelines to stay safe during thunderstorms
30-30 Rule
When you see lightning, count to 30. If you hear thunder before reaching 30, get indoors. Wait 30 minutes after the last thunderclap before going outside.
Seek Shelter
With 42 thunderstorm days annually, residents of San Antonio should always have a shelter plan. Move inside a substantial building or hard-topped vehicle.
Stay Informed
Use Lightning Tracker to monitor real-time lightning near San Antonio. Set alerts for your neighborhood to get advance warning of approaching storms.
Avoid Open Areas
Stay away from open fields, hilltops, isolated trees, and bodies of water during storms. If hiking, descend from ridges and peaks immediately.
Useful Guides for San Antonio
These guides match the nearby-lightning and alert questions people ask most often
Use this guide to judge nearby strike danger fast, especially when storms are building near your neighborhood.
Alerts Best alert options for San Antonio stormsSee how app alerts, NOAA weather radio, and local warnings work when storms move toward your city.
Map guide How to read live lightning around San AntonioUnderstand strike clusters, motion, and timing so you can decide when to get indoors.
San Antonio Lightning FAQ
Fast answers for live lightning, storm season, and safety in San Antonio
How many thunderstorm days does San Antonio, Texas get per year?
San Antonio averages 42 thunderstorm days per year. The national average is approximately 25 days, and the Texas statewide average is 50 days.
When is thunderstorm season in San Antonio?
In San Antonio, thunderstorm season runs from May through October, with peak activity in June through September. The summer months bring daily afternoon thunderstorms fueled by humid tropical air and intense solar heating. July and August typically see the highest frequency of lightning strikes.
What should I do if caught in a lightning storm in San Antonio?
Follow the 30-30 rule: if the time between seeing lightning and hearing thunder is 30 seconds or less, seek shelter immediately. With 42 thunderstorm days annually in San Antonio, always have a shelter plan. Move inside a substantial building or hard-topped vehicle, and wait 30 minutes after the last thunderclap before going outside.
Nearest Lightning Maps to San Antonio
Jump to nearby city pages when storms are moving across the region