Hot tub pregnancy questions come up a lot, especially from families who already own a hot tub. The short answer is that health services advise pregnant women to avoid hot tubs, saunas and very hot baths, particularly in the first trimester. This guide explains why, and what you can do instead. It is general information only, so always talk to your GP, midwife or obstetrician about your own situation.
Why hot tubs are a concern in pregnancy
The main concern is raised body temperature. A hot tub is usually set at 37 to 40°C. Sitting in water that hot can push your core temperature up quickly. Research has linked a high core temperature in early pregnancy with a higher risk of some birth defects, such as neural tube defects. In addition, hot water can make you feel faint or dizzy, because it lowers blood pressure.
What the HSE and NHS say
Both the HSE and the NHS advise against using hot tubs and saunas while pregnant, because of the risk of overheating. Their advice is to avoid anything that makes your body temperature rise too high, including very hot baths. If you have already used a hot tub before you knew you were pregnant, do not panic. Instead, mention it to your GP or midwife at your next appointment.
Is a warm bath okay?
A warm bath, not a hot one, is generally considered fine during pregnancy. The key is that the water should feel comfortably warm rather than hot. If your face goes red, you start to sweat or you feel lightheaded, the water is too hot and you should get out.
Other risks to think about
- Slips getting in and out, especially later in pregnancy.
- Dizziness or fainting from lower blood pressure.
- Infections such as hot tub folliculitis if the water is poorly maintained.
Safer ways to relax during pregnancy
Instead of the hot tub, try a warm bath, gentle swimming, pregnancy yoga or a massage from a therapist trained in pregnancy care. If you own a hot tub, you could also lower the temperature and just sit with your feet in. Even so, check with your midwife before doing that.
Using your hot tub again after birth
Most women are advised to wait until any bleeding has stopped and any stitches or wounds have healed, which often means around six weeks after birth. Again, your GP or midwife can confirm when it is safe for you. Meanwhile, keep your water clean with our hot tub safety guide and maintenance tips.
Frequently asked questions
Can you use a hot tub when pregnant?
Health services like the HSE and NHS advise avoiding hot tubs while pregnant, especially in the first trimester, because of the risk of overheating.
What if I used a hot tub before I knew I was pregnant?
Try not to worry. Mention it to your GP or midwife at your next appointment, and avoid hot tubs for the rest of your pregnancy.
Is a warm bath safe in pregnancy?
A warm bath is generally fine. The water should feel comfortably warm, not hot, and you should get out if you feel dizzy or overheated.
When can I use a hot tub after giving birth?
Usually once bleeding has stopped and any wounds have healed, often around six weeks. Check with your GP or midwife first.
Planning a hot tub for after the baby arrives?
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