Summer Travel and Climate Change: Will Vacation Be a Thing of the Past?

You can’t escape the orange. That’s what travelers this summer have been reckoning with — swathes of tangerine, traffic cone and burnt sienna on maps indicating record high temperatures around the globe. Four concurrent heat domes from the southern United States to East Asia descended on millions — Phoenix residents enduring 31 days of 110-degree-plus temperatures. Italians in more than a dozen cities under extreme weather warnings. And in South Korea, at least 125 people were hospitalized for heat-related conditions at the World Scout Jamboree.

In Florida, it got so bad in June that Jacki Barber, 50, a clinical social worker and eighth-generation Floridian, canceled a beach trip to St. Augustine. “The water temperature was like 89 degrees,” Ms. Barber said.

“We’re used to hurricanes ruining plans, tropical storms, even just bad thunderstorms,” she said. “But I don’t recall ever looking at anyone and saying ‘It’s too hot to go to the beach.’”

As the summer travel engine kicked into high gear this year, it wasn’t just the scorching heat affecting carefully laid plans. There were also fires, floods, tornadoes and hail storms. Eight inches of rainfall left parts of Vermont coping with catastrophic floods. Tens of thousands of people, including thousands of tourists, had to evacuate islands in Greece because of wildfires. (Prime Minister Kyriakos Mitsotakis on Wednesday offered a free weeklong stay in 2024 to those travelers affected — in spring or fall.) The popular music festival Awakenings canceled a date in the Netherlands because of concern over hail, lightning and thunderstorms.

Increasingly dangerous weather now hits classic summer destinations, with conditions growing more erratic, expensive and deadly. According to the National Oceanic and Atmospheric Administration, the United States has experienced four climate disasters since May, each causing over a billion dollars in damages. The National Park Service estimates that more visitors have died of heat-related causes since June than do in an average year. The indirect toll is almost certainly higher: A recent study found that summer heat waves killed 61,000 people in Europe last year.

Summer trips have long been treasured. Sure, airport lines are longer and hotel rooms go quicker, but school’s out, the sun’s out and beaches beckon. Summer travel cuts across social class; whether you go to a state fair or Sardinia, you cash in precious vacation days. You suntan, you…