What’s the Right Hot Tub Temperature for Maximum Relaxation?

When it comes to using a hot tub, one of the most important factors that affect your experience is the water temperature. Getting it right is vital for a perfect evening of relaxation. But, what is the right hot tub temperature? In this article, we’ll explore that question and all the variables that can impact the recommended temperature for the best soak possible.

The Recommended Hot Tub Temperature

The ideal temperature for a hot tub should be between 100 and 104°F (37.8 and 40°C). It is essential to note that these recommended temperatures may not be suitable for everyone. The best temperature for you depends on your individual preferences, health concerns, and other factors, such as the time of day, the season, the weather, and your mood.

The temperature range of 100-104°F (37.8-40°C) is generally safe for most adults. However, the water can heat up to 105°F (40.6°C) for a maximum of 15 minutes if you’re using your hot tub for hydrotherapy. After 15 minutes, it’s best to lower the temperature to a safe range to avoid skin damage, light-headedness, and other potential health risks.

The Effects of Temperature on Your Body

The temperature of the hot tub can have various effects on your body, both positive and negative. For example:

Higher temperatures:

  • Promote relaxation by reducing muscle tension and increasing blood circulation.
  • Relieve joint pain and stiffness by improving joint mobility and flexibility.
  • Speed up muscle recovery after a workout or injury by increasing the flow of oxygen and nutrients to the muscles.

Lower temperatures:

  • Reduce the risk of dehydration by minimizing water loss through sweating.
  • Lower the risk of overheating, heat exhaustion, and heatstroke, especially in hot and humid environments.
  • Make it easier to stay in the hot tub for a longer time without feeling dizzy, nauseous, or fatigued.

Factors That Affect Your Ideal Temperature

Various factors can affect the ideal temperature for your hot tub experience. Some of the most important ones include:

Your health and medical conditions

If you have a specific medical condition such as high blood pressure, diabetes, or pregnancy, consult your doctor before using a hot tub. They can recommend a safe and suitable temperature range for your health status.

Your age and sensitivity to heat

As you age, your skin becomes thinner, and you may lose the ability to regulate your body temperature. Therefore, you might prefer lower temperatures than younger folks. Also, some individuals may have a higher sensitivity to heat than others, and they may find higher temperatures uncomfortable or even painful.

The time of day and season

Hot tub temperatures can vary depending on the time of day and season. For example, if you’re using your hot tub during the daytime in summer, you may prefer lower temperatures to avoid overheating. Conversely, if you’re using your hot tub during winter, you may prefer higher temperatures to stay warm and comfortable.

Your mood and relaxation goals

The hot tub experience is all about relaxation, and your mood plays a vital role in determining the optimal temperature. If you’re looking to unwind after a busy day, you may prefer higher temperatures to loosen up your muscles and release tension. But, if you’re looking to cool off and refresh your mind, lower temperatures may be more suitable.

The Risks of an Incorrect Hot Tub Temperature

It’s crucial to maintain the recommended temperature range to avoid any potential risks that come with using a hot tub. Some of the risks include:


If the temperature of the hot tub is too low, you may develop hypothermia. Hypothermia is a condition that occurs when your body temperature drops below the normal range, causing symptoms such as shivering, numbness, confusion, and slurred speech.


If the temperature of the hot tub is too high, you may get dehydrated. Dehydration occurs when your body loses more fluids than it takes in, leading to symptoms such as thirst, dry mouth, headache, dizziness, and fatigue.

Heat exhaustion and heatstroke

If the temperature of the hot tub is too high, you may experience heat exhaustion or heatstroke. Heat exhaustion is a condition that occurs when your body overheats, causing symptoms such as heavy sweating, weakness, nausea, and fainting. If left untreated, heat exhaustion can progress to heatstroke, which is a life-threatening emergency that requires immediate medical attention.

The Bottom Line

Choosing the right hot tub temperature is critical for a relaxing and safe experience. While the recommended temperature range is 100-104°F (37.8-40°C), you should always consider your individual preferences, health status, and other factors before deciding on the ideal temperature. Maintain the recommended temperature range and keep the risks of hypothermia, dehydration, heat exhaustion, and heatstroke at bay. Happy soaking!


  • Q: What is the ideal temperature for a hot tub? A: The ideal temperature for a hot tub is between 100 and 104°F (37.8 and 40°C).
  • Q: Can I get into a hot tub if I am pregnant? A: It is always best to consult your doctor before any hydrotherapy or hot tub use when you’re pregnant, as it may not be safe for you or your unborn baby.
  • Q: How long should I stay in a hot tub? A: It is recommended to stay in a hot tub for no more than 15 minutes at a water temperature of 105°F (40.6°C). After that, you should lower the temperature to avoid health risks.
  • Q: Can hot tubs cause UTIs? A: Hot tubs can harbor bacteria, which can cause urinary tract infections (UTIs). It’s essential to maintain proper hygiene, clean the hot tub regularly, and not spend too much time in it to avoid UTIs.


  1. Mayo Clinic Staff. (2019). Hot tub safety: How to reduce your risk of infection. Mayo Clinic. https://www.mayoclinic.org/healthy-lifestyle/adult-health/in-depth/hot-tub-safety/art-20047113
  2. Pool Research. (2021). Hot Tub Temperature Guide: The Perfect Bath. Retrieved from https://poolresearch.com/hot-tub-temperature/
  3. U.S. Consumer Product Safety Commission. (n.d.). Safety Barrier Guidelines for Residential Pools. CPSC.gov. https://www.cpsc.gov/Safety-Education/Safety-Guides/Sports-Fitness-and-Recreation/Swimming-Pools-and-Spas/Safety-Barrier-Guidelines-for-Residential-Pools

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