Can Children Use a Hot Tub? Ages, Limits and Safety Rules
Safe limits by age: temperature, time and water depth
Find your child's age below for the water temperature, the length of a soak and where the water should sit.
Adults have their own, warmer range, set out in our hot tub temperature guide.
Under 5
OutCover on and locked
Out of the tub. Small bodies heat up quickly, so babies and toddlers are best kept out of the water altogether.45
Close and lock the cover after every soak
A solid, lockable cover that a child cannot open without an adult is the first layer of protection.12
Put it back on straight after the last person gets out, even if you are only popping indoors for a minute, and keep watching children who are in the garden.2
If your cover's locks are worn or missing, these are made to fit virtually any hot tub cover.
tubhub Hot Tub Cover Locks & Keys with Pinch Release£19.99
A set of 4 pinch-release cover locks with screws and keys. The pinch-release mechanism is childproof.
tubhub Secure Hot Tub Cover Straps£32.99
Two adjustable straps with locking buckles. They hold a cover down over the tub when it has no locks of its own.
Simple rules for children in the water
Children manage best when they know the rules before they get in, so run through them every time.3
Our hot tub safety guide covers the safety basics for everyone who uses the tub.
Before they get in
- Set the tub to 35°C or below and let the water settle at that temperature.
- Name the adult who is watching, so someone is always looking at the water.2
- Tie long hair back and take off jewellery, so nothing can catch on a drain.37
- Agree how long the soak is and who tells them when it is time to get out.
If a child gets too hot: four steps
Tiredness, dizziness, headache, feeling sick, very pale clammy skin, cramps, thirst and grumpiness can all be signs of heat exhaustion, and they look the same in children and adults.8
Most children feel better within 30 minutes. Call 999 if they are still unwell after that, have hot skin that is not sweating, are confused or uncoordinated, have a fast heartbeat or trouble breathing, or have a fit.8
Quick answers
Open a question to read the answer.
What age can a child go in a hot tub?
Children under 5 should not use a hot tub. From 5, children can join with an adult watching, in water at 35°C (95°F) or below, for 5 to 10 minutes at a time, and never more than 15 minutes at a time.
Can babies and toddlers go in a hot tub?
No. Babies, toddlers and all children under 5 are best kept out of the hot tub, because small bodies heat up quickly and the water is deep and hot.
What temperature is safe for children in a hot tub?
Set the tub to 35°C (95°F) or below whenever children are going to use it. Our temperature guide covers adults and every other situation.
How long can a child stay in a hot tub?
Between 5 and 10 minutes at a time for children under 10, and no more than 15 minutes at a time for older children. Then they step out, cool down and have a drink of water.
Does a hot tub need a lock?
Yes. A solid, lockable cover that a child cannot open without an adult keeps the tub closed whenever nobody is using it. Put it back on and lock it after every soak.
Does an adult need to watch the whole time?
Yes. An adult should watch children in the tub and around it, even when the cover is on. When several adults are in the garden, agree who is watching so the job is never left to chance.
What should I do if a child feels dizzy or too hot in the hot tub?
Help them out straight away and take them somewhere cool. Remove any extra clothing, give them plenty of water and cool their skin with cool water. Call 999 if they are still unwell after 30 minutes, are not sweating, are confused or have a fit.
Sources
- RoSPA, Hot tub safety (children, covers, session length), accessed 7 October 2026
- RLSS UK, Take note before hopping into your hot tub, 20 November 2024
- Jacuzzi, Hot tub safety: what you need to know (supervising children), accessed 7 October 2026
- Bullfrog Spas, Hot tub safety for kids, 27 November 2017, updated 22 April 2025
- Pool & Hot Tub Alliance (PHTA), Hot tub safety, accessed 7 October 2026
- HSE, HSG282: The control of legionella and other infectious agents in spa-pool systems, information box 3 (supervision and immersion time)
- Toronto Public Health, Home pool and hot tub safety, last modified 3 November 2022
- NHS, Heat exhaustion and heatstroke, accessed 7 October 2026
Paul Margerison
Managing Director & Founder, Outdoor Living
A hot tub is at its best when the whole family can enjoy the garden around it safely. This guide gives you the ages, limits and habits to start from.