National Hot Tub Day

National Hot Tub Day is an annual American holiday dedicated to hot tubs and whirlpool baths. It is observed on March 28. Today, hot tubs are extremely popular. People visit spas to enjoy water-based relaxation, while those with the opportunity often install whirlpool tubs in their own homes. A hot tub allows you to enjoy warm water while benefiting from full-body relaxation created by targeted water jets.

History

Bathtubs have been known to humanity since ancient times. Historical sources indicate that the Persian king Phraortes, who lived in the 7th century BC, ordered a bathtub carved from solid granite. Many ancient healers believed in the therapeutic properties of hot water, which made bathing an essential practice among wealthy individuals and rulers. In ancient Rome, hot baths were especially popular among legionaries recovering from injuries.

In the 17th century, a French inventor named Levele created the first metal bathtub equipped with a boiler for heating water. This innovation laid the foundation for modern bathtubs and also contributed to the development of early water-heating systems.

A major breakthrough occurred in the 20th century. In the 1960s, Candido Jacuzzi introduced the first commercially produced whirlpool bath. Although early versions were used mainly in medical facilities, hot tubs soon gained popularity among private homeowners. Users appreciated the relaxing and therapeutic effects created by warm water and pressurized jets powered by an internal pump.

Interesting Facts

• Candido Jacuzzi originally developed water pumps and a whirlpool system to help his child, who suffered from rheumatic fever. While the concept emerged in the 1940s, mass production began in the 1960s.
• The word “spa” is commonly believed to come from the Latin phrase “Sanus per Aquam,” meaning “health through water.”
• Many sleep specialists recommend taking a warm bath in the evening, as it can help reduce stress and promote faster, deeper sleep.

How to Take Part

Take a relaxing hot bath or enjoy time in a whirlpool tub on this day. You can enhance the experience with aromatic oils, bath salts, or other water additives. Visiting a spa to unwind in a hot tub is also a great way to take part.

Sharing the holiday on social media can add to the celebration. Asking others whether they prefer a standard bathtub or a whirlpool tub can spark lighthearted conversations.

When is National Hot Tub Day in 2026?

National Hot Tub Day is observed on March 28 each year.

Observations