It sounds counterintuitive: why would anyone climb into a 100°F+ pool when it’s already 90°F outside? But some of the best hot springs in summer experiences happen precisely because most people assume the season is off-limits. Trails are clear, high-alpine pools finally thaw out, and evening soaks under a warm sky are one of the most underrated ways to close out a long summer day. The catch is that soaking in summer heat carries real risks that don’t exist in January — and this guide walks through exactly how to manage them so you can soak smart instead of skipping the season entirely.
Why Soak in Summer at All?
Most soakers default to hot springs as a cold-weather activity — steam rising off the water while snow piles up around the edges makes for a great photo, and there’s a real physiological satisfaction to being hot while everything else is cold. But summer has its own advantages that don’t get enough credit.
High-elevation and backcountry springs that are buried under snowpack most of the year become accessible right around early-to-mid summer, which means some of the most scenic soaks in the country only have a short window when you can actually reach them. Trailheads that are treacherous or impassable in winter open up completely. And because so many people mentally file hot springs under “winter activity,” summer crowds at many springs are noticeably thinner than you’d expect — especially on weekdays.
There’s also the simple fact that a lot of hot springs sit near rivers, creeks, or lakes. In summer, that pairing becomes a feature: soak, then cool off in the current a few feet away. It’s a rhythm that doesn’t really work the same way in the colder months.
None of that means summer soaking is risk-free, though. It just means the risks are different from what most soakers are used to managing.
The Real Risks of Soaking in Summer Heat
The core issue with hot springs in summer is straightforward physics: your body is already working to cool itself down in warm ambient air, and a hot pool actively fights that process. Combine a 90°F afternoon with a hot soak, and you’re stacking heat load on top of heat load — which is a very different experience than easing into the same pool when it’s 20°F outside and the heat feels balanced by the cold air on your face and shoulders.
The main risks to know about:
Overheating and heat exhaustion. Symptoms include dizziness, nausea, a racing heart, and confusion. These can come on faster than people expect when air temperature and water temperature are both working against you.
Dehydration. Soaking causes you to sweat even though you’re submerged in water, and that sweat loss is easy to miss because you don’t feel the sweat the way you would on dry land. Add sun exposure and physical exertion from a hike in, and dehydration risk climbs fast.
Sun exposure. Many hot springs sit in open, exposed terrain — desert basins, high alpine bowls, riverbanks with no tree cover. Sunburn and sun-related heat illness are a bigger factor in summer than most soakers plan for.
Altitude combined with heat. A lot of the country’s best backcountry hot springs sit at elevation, where thinner air, stronger UV exposure, and physical exertion from the approach all compound the heat-related risks of the soak itself.
None of this means avoid the pool. It means treat the season differently than you would a winter trip.
How to Soak Safely When It’s Hot Outside
Time Your Soak
The single biggest lever you have is timing. Early morning and evening soaks are dramatically more comfortable and safer in summer than a midday session, when both air and water temperatures are working against your body’s ability to cool itself. Many experienced soakers treat summer hot springs almost like a sunrise or sunset activity rather than a midday stop — arrive before the heat builds, or wait until it breaks in the evening.
This also happens to be when the light is best for photos and when trailheads are least crowded, so the safety upside comes with a quality-of-experience upside too.
Hydrate Before, During, and After
Start hydrating well before you leave for the trailhead — don’t try to catch up once you’re already at the spring. Bring more water than you think you’ll need, especially if there’s any hike involved, and keep sipping throughout the soak itself rather than waiting until you feel thirsty. Thirst is a lagging indicator of dehydration, not a real-time one.
Electrolytes matter here too. A long hike plus a hot soak in summer heat is enough sweat loss that plain water alone may not fully replace what you’re losing.
Know When to Get Out
Set a mental timer and check in with your body regularly. Dizziness, a pounding heart, nausea, or feeling unusually fatigued are all signals to get out immediately, move to shade, and rehydrate. In winter, most people naturally limit their soak time because the contrast between hot water and cold air becomes uncomfortable on its own. In summer, that natural feedback loop disappears — nothing forces you out — so you have to be more deliberate about limiting your time in the water.
Alternate Hot and Cold
If the spring you’re visiting sits near a river, creek, or cooler pool, use it. Alternating between hot water and cooler water helps regulate your core temperature and makes for a much more sustainable soak session in summer heat. This is one of the reasons river-adjacent hot springs are especially well-suited to the season — the cooling option is built right into the landscape.
Protect Yourself from the Sun
Many hot springs — especially in desert and high-alpine terrain — offer little to no shade. Sunscreen, a hat, and sunglasses are worth packing even for a short soak, and reapplying sunscreen after time in the water matters more than people expect.
Best Types of Hot Springs for Summer Soaking
Not every hot spring is equally suited to summer. A few categories stand out.
High-Elevation Springs
Backcountry hot springs at higher elevations tend to run naturally cooler air temperatures even in the height of summer, which makes the heat-on-heat problem much more manageable. They’re also frequently only accessible once snowmelt clears the approach trail, which makes summer the actual season for visiting rather than an off-season workaround.
Discover high-elevation hot springs like these — plus GPS directions, trail conditions, and community reviews — in the Soakr app. Download free for iOS
Springs Near Rivers or Cold Water
Springs that sit directly beside a river or creek give you the built-in option to alternate hot and cold, which is one of the most effective tools for soaking safely in summer heat. These combination spots tend to be some of the most popular summer destinations in the country for exactly this reason — the pairing of hot pools with a cold-water plunge just steps away is hard to beat on a warm afternoon.
Explore river-adjacent hot springs with GPS directions, filters, and real-time conditions in the Soakr app. Download Soakr free for iOS
Early-Access Springs
Some springs are simply easier to reach comfortably at dawn or dusk — shorter approach hikes, east- or west-facing trailheads that avoid the worst midday sun, or locations close enough to a town that a sunrise visit is realistic. These are worth prioritizing over longer, more exposed hikes during the hottest months.
Summer Hot Springs Etiquette Reminders
Summer brings more visitors to accessible springs, which makes good etiquette even more important. Pack out everything you bring in, keep groups reasonably sized so everyone gets a turn at popular pools, and be mindful of noise at springs near backcountry campsites. If you’re new to soaking etiquette generally, it’s worth reading through a full breakdown before your trip — our hot springs etiquette guide covers the rules every soaker should know, and they matter even more when trails are busier in peak season.
It’s also worth brushing up on general hot springs safety beyond just the heat-specific concerns covered here — things like water quality, footing on slick rock, and recognizing when a pool simply isn’t safe to enter.
Planning Your Summer Hot Springs Trip
If you’re building a longer trip around summer soaking, pair your hot springs stops with camping. Many of the best backcountry springs sit near dispersed camping or established campgrounds, which lets you arrive the evening before and hit the pool at sunrise before the heat builds — exactly the timing strategy that makes summer soaking work. Our hot springs camping guide walks through how to plan a soak-and-camp trip end to end.
Colorado is a particularly good option for summer high-elevation soaking, since so many of its best springs sit at altitude and only fully open up once snowmelt clears in early summer. Spots like Conundrum Hot Springs reward the wait with a genuinely alpine soaking experience — cool mountain air, a demanding approach, and pools that stay comfortable even on a warm afternoon. Get trail details, permit information, and community reviews for Conundrum in the Soakr app. Download free You can browse the state’s full lineup, from backcountry classics to developed soaks, in our Colorado hot springs guide.
Yellowstone’s Boiling River is another classic summer pick precisely because it’s a mixing zone — geothermal water meeting the cold Gardner River right where you soak, which means you control your own temperature simply by shifting position in the current. Discover Boiling River and other Yellowstone-area soaks — plus GPS directions and current conditions — in the Soakr app. Download Soakr free for iOS For more options around the park, see our hot springs near Yellowstone roundup or the broader Wyoming hot springs guide.
The Bottom Line
Hot springs in summer aren’t something to avoid — they’re a different soak with a different rhythm. Time your visit around the cooler parts of the day, hydrate aggressively, watch your body for warning signs, and lean into springs that pair hot pools with cold water nearby. Do that, and summer can be one of the best seasons to soak all year, not a season to sit out.
Ready to plan your next summer soak? Soakr has over 2,000 hot springs across the US, with GPS directions, community check-ins, photos, and offline maps so you can find the right spring for the season — wherever you’re headed. Download Soakr free for iOS