every summer, countless visitors arrive in the united states and quickly reach the same conclusion:
"why is it so hot?"
this reaction appears across social media, travel forums, and personal travel blogs. Visitors from around the world often describe american summers as far hotter than they expected.
while temperatures are certainly part of the explanation, researchers have found several additional factors that contribute to this perception.
humidity
one of the biggest reasons is humidity.
in many parts of the united states, especially throughout the southeast and midwest, summer air contains large amounts of moisture.
cities such as:
- atlanta
- orlando
- new orleans
- houston
- indianapolis
can experience days where stepping outside feels like walking into a sauna.
high humidity reduces the body's ability to cool itself through sweat, making temperatures feel much hotter than the thermometer suggests.
a day with an actual temperature of 90°F (32°C) may feel closer to 105°F (40°C).
larger temperature swings
many visitors come from regions with milder climates.
parts of europe, for example, often experience cooler summers due to the influence of the atlantic ocean.
american cities located farther inland can heat up much more dramatically.
someone accustomed to 75°F (24°C) summers may find a week of 95°F (35°C) temperatures overwhelming.
the urban heat island effect
large cities absorb and trap heat.
concrete, asphalt, buildings, and vehicles all contribute to higher temperatures.
as a result, cities frequently feel hotter than nearby rural areas.
tourists often spend most of their time in urban environments, where this effect is strongest.
walking more than expected
many visitors underestimate how much walking they will do.
tourist activities often involve:
- sightseeing
- outdoor events
- amusement parks
- city exploration
spending hours outside in direct sunlight can make temperatures feel significantly more intense.
air conditioning differences
many americans spend large portions of the day in air-conditioned buildings.
visitors moving between extremely cold indoor spaces and very hot outdoor spaces often become more aware of the temperature difference.
the contrast can make the heat feel even more intense.
the sun itself
travelers frequently report that american sunlight feels unusually strong.
this is especially common in states such as:
- arizona
- nevada
- texas
- florida
while the actual reason varies by location and season, spending long periods under direct sunlight can dramatically increase heat exposure.
many first-time visitors underestimate how quickly they can become dehydrated.
regional extremes
the united states is home to some of the hottest populated areas in the developed world.
summer temperatures regularly exceed:
- 100°F (38°C) in arizona
- 105°F (41°C) in nevada
- 110°F (43°C) in parts of california
for visitors from cooler climates, these temperatures can feel almost unbelievable.
traveler experiences
common comments from international visitors include:
"the weather app said 90 degrees. it felt like 200."
"i walked outside and immediately started sweating."
"how do people live here?"
while often exaggerated, these reactions highlight how intense american summers can feel to newcomers.
conclusion
many visitors describe the united states as "burning hot" because of a combination of high temperatures, humidity, urban environments, strong sunlight, and unfamiliar climate conditions.
for travelers arriving from cooler regions, the difference can be dramatic.
while not every part of the country experiences extreme heat, many of America's most visited destinations do, leaving a lasting impression on tourists who weren't expecting the weather to hit quite so hard.