San Antonio has officially stepped into meteorological summer, marking the beginning of the city’s most intense heat and humidity. Unlike astronomical summer, which starts on June 20 this year, meteorological summer begins on June 1 and ends on August 31. This seasonal shift is already making its presence felt across South Texas as the combination of rising temperatures and climbing dew points create extremely muggy and uncomfortable conditions for residents.
Meteorological seasons are based on the annual temperature cycle and align more consistently with calendar months. Meteorological summer includes June, July, and August—the warmest months of the year in the Northern Hemisphere. According to the National Weather Service, this classification helps climatologists compare historical weather data more accurately.
For San Antonio, this period brings consistently high temperatures, frequent heat advisories, and the kind of sticky, humid air that makes even the shortest walk outside feel exhausting.
As of June 1, locals are already experiencing dew points in the 70s, which significantly contributes to that oppressive, muggy feeling. The dew point is a measure of moisture in the air, and when it crosses into the 70-degree range, it makes the air feel much hotter than it actually is.
According to the National Oceanic and Atmospheric Administration (NOAA), when dew points are high, sweat cannot evaporate off your skin easily, making your body less efficient at cooling itself. This creates a risk of overheating and increases the likelihood of heat exhaustion and heat stroke—particularly for outdoor workers, athletes, the elderly, and young children.
San Antonio has already recorded multiple days with highs nearing or surpassing 95°F, and with the official start of meteorological summer, experts predict a long stretch of triple-digit temperatures is on the way. Local weather stations forecast that the first full week of June could see heat indexes reaching 105°F or higher.
This trend is in line with larger patterns. Data from the Texas State Climatologist Office show that San Antonio and other parts of Texas have been getting hotter over the past few decades, with more days over 100°F than ever before.
Locals are already taking precautions. City officials have opened several cooling centers around San Antonio to help vulnerable residents escape the heat. These centers are located in libraries, community centers, and some public schools. You can find a full list of locations on the City of San Antonio’s official website.
“Heat exhaustion can sneak up on you, especially in humid weather,” said Dr. Lisa Hernandez, a public health advisor with the city. “We advise everyone to drink plenty of water, avoid strenuous activity during peak sun hours, and never leave children or pets in cars.”
The increase in air conditioning use is also straining the city’s power grid. CPS Energy, San Antonio’s municipal utility, is urging residents to conserve electricity during peak hours (3 to 7 p.m.) to prevent outages. According to ERCOT, which operates the Texas power grid, energy demand is expected to reach record highs this summer.
To avoid disruptions, CPS has asked residents to use fans, close blinds, and raise their thermostats a few degrees when possible. They are also offering energy-saving rebates for upgrading inefficient appliances.
High humidity combined with extreme heat doesn’t just make you sweat—it can be dangerous. The local health department has issued several warnings and is conducting outreach to educate residents on the signs of heat-related illnesses.
Common symptoms of heat exhaustion include dizziness, nausea, rapid heartbeat, and headaches. If untreated, it can progress to heat stroke, which can be fatal. Experts recommend carrying water bottles when outside and taking frequent breaks in shaded or air-conditioned environments.
For those living without reliable air conditioning, local nonprofits like Project Cool are distributing free fans to senior citizens and low-income households.
Here are some practical ways to stay cool and safe:
Meteorologists predict that this summer could be hotter than average. According to the Climate Prediction Center, there is a strong probability of above-normal temperatures across Central and South Texas, including San Antonio.
There’s also concern over the Atlantic hurricane season, which officially starts on June 1 and runs through November 30. Warmer ocean temperatures can fuel stronger storms, and the National Hurricane Center has forecasted an “above-average” season in terms of storm activity.
While hurricanes don’t frequently hit San Antonio directly, their remnants often bring heavy rain and additional humidity to the region.
With meteorological summer now in full swing, San Antonio residents should brace for a long, hot, and humid season. Staying informed and prepared can make a significant difference in managing health and comfort during these extreme conditions.
For daily weather updates and safety advisories, residents are encouraged to follow the National Weather Service San Antonio Twitter feed and keep an eye on local news broadcasts.
As the muggy heat intensifies, remember: hydration, shade, and awareness are your best defenses against what promises to be a scorching summer.
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