TLDR

 

• Outdoor saunas provide heat therapy and muscle recovery benefits, perfect for wellness-focused relaxation even in summer.

 

• Hot tubs offer soothing water immersion and a social outdoor experience, feeling more refreshing during warm weather.

 

• Consider your garden space, maintenance, and how you intend to use your spa setup when choosing between a sauna and a hot tub.

 

 

Outdoor Sauna vs Hot Tub in Summer: Which Is Better for Your Garden?

Choosing between an outdoor sauna and a hot tub is one of the biggest decisions when creating a garden wellness space. Both can turn your outdoor area into somewhere you actually want to use, not just look at. The right choice depends on how you relax, how much space you have, who will use it, and whether you prefer dry heat, steam-style warmth or warm water immersion.

For summer, the decision can feel even harder. A hot tub sounds naturally suited to long evenings outside, but an outdoor sauna can be just as enjoyable when used at the right temperature, with good ventilation, proper hydration and a cool-down routine.

So, which is better: an outdoor sauna or a hot tub?

Here’s the simple answer. Choose an outdoor sauna if you want a quieter, more wellness-focused heat experience for relaxation, recovery and switching off. Choose a hot tub if you want warm water comfort, social use, massage jets and a more laid-back garden feature for family and friends.

In this guide, we’ll compare outdoor saunas and hot tubs for summer use, including comfort, benefits, maintenance, space, installation, running costs and who each option is best for.

Outdoor Sauna vs Hot Tub: Quick Comparison

Feature	Outdoor Sauna	Hot Tub
Main experience	Dry heat, steam heat or infrared warmth	Warm water immersion with jets
Best for	Quiet relaxation, heat therapy, recovery routines	Social use, hydrotherapy-style comfort, evening soaking
Typical feel	Intense, calming and private	Gentle, sociable and soothing
Summer use	Best with shorter sessions and cool-down breaks	Best at slightly lower temperatures on warm days
Maintenance	Wood care, heater checks, cleaning	Water testing, chemicals, filter cleaning
Space needed	Often more compact	Usually needs more surrounding access space
Privacy	More enclosed and private	More open unless screened
Social use	Better for small, quiet sessions	Better for groups and entertaining
Best buyer	Wellness-focused, recovery-focused, privacy-focused	Family-focused, social, relaxation-focused

1. The Main Difference: Heat Therapy vs Water Immersion

An outdoor sauna works by surrounding the body with heat. Depending on the model, this may come from a traditional sauna stove, steam-style heat, infrared heaters or a hybrid combination. The experience is usually quiet, focused and intentionally warming.

A hot tub works differently. Instead of sitting in hot air, you sit in warm water. The water supports your body, while jets can help relax tight muscles and create a massage-style feel. This makes hot tubs especially appealing for people who want comfort without the intensity of a sauna.

The biggest difference is the style of relaxation.

A sauna feels like a dedicated wellness ritual. You heat up, sweat, step out, cool down, hydrate, and repeat if you want another round. It suits people who enjoy structure and quiet.

A hot tub feels more casual. You step in, sit back, chat, unwind and enjoy the warmth. It suits people who want a garden feature they can use with a partner, family or guests.

For anyone comparing the two, this is the first question to ask:

Do you want a private heat experience or a warm water social experience?

If you prefer a calm, enclosed retreat, explore the CenturaHeat sauna collection. If you prefer water-based relaxation, browse the CenturaHeat hot tub collection.

2. Which Feels Better in Summer?

Many people assume a hot tub is automatically better in summer, but that is not always true. Both can work well in warm weather when used sensibly.

A hot tub can feel ideal on cooler summer evenings, especially when the temperature drops after sunset. It gives you a warm, comfortable place to relax outdoors without needing to sit inside. On very hot days, some users prefer lowering the water temperature slightly so the tub feels less intense.

A sauna can also be enjoyable in summer, especially when used in shorter sessions. The key is not to treat summer sauna use like a winter warm-up. Instead, think of it as a quick reset: a controlled heat session followed by fresh air, a cool shower and plenty of water.

A sauna may actually feel more refreshing than expected because the cool-down afterwards is part of the experience. The contrast between heat and fresh air can make the routine feel clean, energising and satisfying.

For summer comfort:

• Use shorter sessions if it is already warm outside.
• Drink water before and after.
• Avoid alcohol before or during use.
• Keep a towel nearby.
• Allow time to cool down properly.
• Place outdoor wellness products in a shaded or well-planned area where possible.

If your garden gets strong afternoon sun, think carefully about placement. A shaded corner, pergola, privacy screen or sheltered decking area can make both a sauna and hot tub more comfortable throughout the season.

3. Wellness Benefits: What Can Each One Support?

Both saunas and hot tubs are associated with relaxation, stress relief and muscle comfort, but they work in different ways.

Outdoor sauna benefits

An outdoor sauna may support:

• Deep relaxation
• Sweating
• Post-exercise wind-down
• A calmer evening routine
• Temporary relief from everyday muscle tension
• A more private space to switch off
• Heat and cool-down rituals

Saunas are often linked with wellness and recovery because heat encourages the body to warm up, sweat and relax. However, it is important not to overclaim. Sauna research is still developing, and not every benefit applies to every person. The BBC has covered the ongoing discussion around whether saunas truly boost health, which is a useful reminder to treat sauna use as a wellness habit rather than a medical cure.

A good sauna routine is less about chasing extreme heat and more about consistency, comfort and knowing your own limits.

Hot tub benefits

A hot tub may support:

• Stress relief
• Muscle relaxation
• Better evening wind-down
• Warm water comfort
• Social relaxation
• Joint-friendly soaking due to buoyancy
• Massage-style relief from jets

Healthline’s guide to hot tub benefits notes that warm water soaking may help with relaxation, muscle comfort, sleep and stress relief, although results vary depending on health, usage and the individual.

Hot tubs can be especially appealing after a long day because they combine warmth, water and comfort in a way that feels easy to enjoy. You do not need a structured routine. You simply get in, relax and let the water do the work.

4. Which Is Better for Muscle Recovery?

For muscle recovery, both options can be useful, but they suit different preferences.

A sauna is a strong option if you like heat-based recovery. After exercise, a short sauna session can help you relax, slow down and loosen up. Many people enjoy the feeling of heat after training because it creates a clear recovery ritual.

A hot tub is a strong option if you prefer water-based recovery. The buoyancy of the water reduces pressure on the body, while jets can help ease everyday muscle tightness. This makes hot tubs particularly appealing after walking, training, gardening or physical work.

So which is better?

Choose a sauna if you like a more intense heat session and a focused recovery routine.

Choose a hot tub if you want gentler warmth, water support and massage-style comfort.

For serious injuries, circulation issues, heart conditions, pregnancy or medical concerns, speak to a healthcare professional before using either.

5. Which Is Better for Social Use?

A hot tub is usually the better choice for social use.

Hot tubs are designed for sitting together, chatting and relaxing. They work well for couples, families and guests. If your idea of summer relaxation is having friends over, sitting outside in the evening and creating a more social garden space, a hot tub is likely to fit your lifestyle better.

A sauna is more private and focused. That is not a bad thing. It just creates a different experience. Some people love sharing a sauna with a partner or friend, but the atmosphere is usually quieter. You are less likely to sit in a sauna for casual conversation in the same way you would in a hot tub.

For entertaining, choose a hot tub.

For peaceful solo or small-group relaxation, choose a sauna.

6. Space and Garden Layout

Before choosing between a sauna and hot tub, look at your garden layout honestly.

A sauna usually needs a stable, level base and enough clearance for access, ventilation and safe use. Outdoor saunas can often be positioned against a garden boundary, on decking or in a dedicated wellness corner, depending on the model and installation requirements.

A hot tub also needs a strong, level base, but it usually requires more access around the sides for servicing, cleaning and cover use. You also need to think about filling, draining and water care.

Ask yourself:

• Do I want the feature to be a quiet corner retreat or a central garden focal point?
• Is there enough space for steps and access?
• Will delivery access be simple?
• Is there suitable electrical access?
• Will the area feel private enough?
• Can the base support the weight?
• Is there room for future extras like seating, lighting or a cold shower?

A sauna often suits a tucked-away retreat.

A hot tub often works better as part of a social decking or patio area.

7. Maintenance: Which Is Easier to Look After?

This is where the difference becomes practical.

A sauna does not involve water treatment in the same way a hot tub does. Maintenance usually involves wiping down benches, keeping the interior clean, allowing proper ventilation, checking the heater and looking after exterior materials.

A hot tub requires more regular water care. You need to test the water, manage chemical levels, clean filters and keep the cover in good condition. This is not difficult once you have a routine, but it does require consistency.

A sauna may suit you better if you want lower day-to-day maintenance.

A hot tub may suit you better if you are happy to manage water quality in return for the comfort of warm water and jets.

Neither option is maintenance-free. The better choice is the one you will realistically look after.

8. Running Costs and Energy Use

Running costs depend on the model, insulation, heater type, temperature, usage frequency, outdoor conditions and energy tariffs.

A sauna is usually heated for a session, used, then switched off. This can make it feel easier to control because you are only heating it when needed.

A hot tub is often kept warm and ready, although settings vary depending on how often you use it. Insulation, cover quality and temperature settings make a big difference. In summer, some owners reduce the water temperature to make it more comfortable and reduce unnecessary heat demand.

To manage running costs:

• Use a quality cover on a hot tub.
• Avoid overheating water in summer.
• Only heat a sauna when needed.
• Keep doors and covers closed when heating.
• Place products in sheltered spots where possible.
• Follow the manufacturer’s guidance.
• Keep up with maintenance so everything runs efficiently.

The cheapest option depends on how you use it. A sauna may be more cost-controlled for occasional use. A hot tub may feel better value if it becomes a regular part of family life.

9. Privacy and Atmosphere

A sauna gives you a naturally private space. It feels enclosed, quiet and separate from the rest of the garden. If you want somewhere to disconnect from your phone, reset after work or create a spa-style routine, this is a big advantage.

A hot tub is more open. That can be perfect for social use, but privacy needs more thought. You may want fencing, screens, planting, a pergola or a covered area to make the space feel more comfortable.

Think about the feeling you want your garden to have.

A sauna creates a retreat.

A hot tub creates a destination.

Both can look premium when designed well, but they shape the garden in different ways.

10. Which Is Better for Families?

For family use, a hot tub often has the advantage because it is easier to enjoy together. It feels less formal and more fun, especially during summer evenings.

That said, a sauna can still work well for households that value wellness, fitness and recovery. It may be more appealing to adults who want a calm space rather than a shared entertainment feature.

Choose a hot tub if the whole family will use it regularly.

Choose a sauna if the main users are adults looking for a private wellness space.

Always supervise children around hot tubs and follow product safety guidance carefully.

11. Which Adds More to a Garden?

Both can transform a garden, but they do it differently.

A sauna adds a sense of structure and intention. It creates a dedicated wellness room outside the home and can make the garden feel more premium, calm and Scandinavian-inspired.

A hot tub adds a stronger leisure feel. It turns a patio or decking area into somewhere people gather. It can make the garden feel more usable in the evenings and during cooler weather.

For design-led gardens, a sauna can look striking.

For sociable gardens, a hot tub often becomes the centrepiece.

The best result comes from planning the surrounding area properly. Add simple lighting, non-slip access, towel storage, hooks, seating and privacy features. These finishing touches make the space feel far more complete.

12. Can You Have Both?

Yes, and for some homes this is the ultimate garden wellness setup.

A sauna and hot tub work well together because they offer contrast. You can use the sauna for a focused heat session, cool down outside, then move into the hot tub for gentle water relaxation. This creates a more complete home spa experience.

However, having both requires more space, more budget and more planning. It is best for larger gardens or homeowners who know they will use both regularly.

If you are choosing one first, start with the one that matches your main reason for buying.

For quiet recovery and heat therapy, start with a sauna.

For social relaxation and warm water comfort, start with a hot tub.

Outdoor Sauna or Hot Tub: Which Should You Choose?

Choose an outdoor sauna if:

• You want a private garden retreat.
• You enjoy heat and cool-down routines.
• You want a more wellness-focused experience.
• You prefer lower water maintenance.
• You like quiet relaxation.
• You want something that works well for post-workout recovery.
• You have a smaller garden space.

Choose a hot tub if:

• You want a social garden feature.
• You enjoy warm water relaxation.
• You want massage jets.
• You plan to use it with family or friends.
• You like evening outdoor comfort.
• You are happy to manage water care.
• You want a more casual, leisure-focused experience.

Final Verdict: Sauna vs Hot Tub for Summer

There is no single winner. The better choice depends on how you want to relax.

An outdoor sauna is best if you want a calm, private and heat-focused wellness space. It is ideal for people who enjoy structured relaxation, recovery routines and switching off from everyday stress.

A hot tub is best if you want warm water comfort, social use and a relaxed garden feature that friends and family can enjoy together.

For summer, both can work beautifully. A sauna gives you a refreshing heat and cool-down ritual. A hot tub gives you long, comfortable evenings outdoors. The key is matching the product to your lifestyle, not just choosing what looks best online.

Explore our products

CenturaHeat: saunas 

CenturaHeat: hot tubs 

FAQs

Is a sauna or hot tub better in summer?

A hot tub is usually better for social summer evenings, while a sauna is better for a private heat and cool-down routine. Both can be used in summer when temperature, hydration and session length are managed sensibly.

Is an outdoor sauna too hot to use in summer?

Not necessarily. Many people use outdoor saunas in summer by keeping sessions shorter, staying hydrated and cooling down properly afterwards. Avoid pushing the temperature or session length too far, especially on very hot days.

Is a hot tub good in hot weather?

Yes, but many users prefer lowering the water temperature slightly in warmer weather. This can make the hot tub feel more comfortable and refreshing during summer.

Which is better for muscle recovery, a sauna or hot tub?

Both can support a recovery routine. A sauna offers heat-based relaxation, while a hot tub offers warm water immersion, buoyancy and jets. Choose the one you are more likely to use consistently.

Which is easier to maintain, a sauna or hot tub?

A sauna is usually simpler day to day because it does not require water balancing. A hot tub needs regular water testing, chemicals and filter cleaning, but many owners find the routine easy once they get used to it.

Which is better for entertaining guests?

A hot tub is usually better for entertaining because it is more sociable and relaxed. A sauna is better for quiet, private use or small wellness-focused sessions.

Do saunas and hot tubs have health benefits?

They may support relaxation, muscle comfort and stress relief, but they should not be treated as medical treatments. Benefits vary from person to person. If you have a health condition, are pregnant or have concerns about heat exposure, speak to a healthcare professional first.

Can I install a sauna or hot tub in any garden?

Not every garden will be suitable without preparation. You need a stable base, safe access, suitable electrical supply and enough room for use and maintenance. Hot tubs also need water filling and drainage considerations.

Which is better for a small garden?

A sauna can often work better in smaller gardens because it may require a more compact footprint. However, some smaller hot tubs can also suit tighter spaces if there is enough access around them.

Should I buy a sauna or hot tub first?

Buy a sauna first if you want quiet wellness, heat and recovery. Buy a hot tub first if you want social relaxation, warm water and family use.