Is It Safe to Use a Hot Tub While Pregnant?
Medical experts urge caution with hot tubs during pregnancy. The primary concern is overheating: hot tub water (often set around 39–40 °C / 102–104 °F) can raise your core body temperature above normal. Pregnant people are advised to avoid getting too hot because it can potentially harm the developing baby. The CDC explicitly recommends that expecting parents avoid hot tubs to help prevent birth defects. The American College of Obstetricians and Gynecologists (ACOG) similarly advises avoiding hot tubs and saunas, especially in early pregnancy, due to links between high maternal temperatures and birth defects.
Why Is Overheating Risky?
During the first trimester, when the baby’s brain and spinal cord are forming, elevated core temperatures have been associated with neural tube defects. Studies show that soaking for more than 10 minutes can raise an adult's internal temperature above 38.3 °C (101 °F). High temperatures also increase the risk of dehydration or fainting in the pregnant parent.
Later in Pregnancy
While the risk of birth defects from heat decreases in later trimesters, overheating can still cause dizziness and lightheadedness. For this reason, many healthcare providers recommend avoiding hot tubs throughout pregnancy. If considering a soak, speak to your doctor or midwife first.
Safe Soaking Guidelines for Pregnancy
If your healthcare provider approves brief use:
Limit time to 10 minutes max
Keep water temperature under 38 °C (100 °F)
Sit with torso above water (chest, shoulders, and head out)
Avoid jets and hot spots that may be hotter than the rest of the tub
Exit immediately if you feel dizzy, hot, or faint
Never soak alone – have someone nearby
Stay hydrated before and after soaking
Consider alternatives like warm (not hot) baths, foot soaks, or heating pads for targeted relief
Summary
Hot tubs can pose risks during pregnancy due to the chance of overheating, especially in the first trimester. If you're considering a soak, consult your healthcare provider and follow strict safety precautions. When in doubt, it’s best to skip the hot tub and opt for safer relaxation methods.
