Swimming in Pregnancy: Pools, Temperature and Timing

Swimming in pregnancy: how to think about it

ACOG guidance on exercise in pregnancy lists swimming among the activities that are generally safe and encourages at least 150 minutes of moderate-intensity aerobic activity a week for people without contraindications. NHS guidance takes the same line, framing it as keeping up normal physical activity for as long as you are comfortable. Swimming is often singled out because the water supports body weight, which reduces strain on the back, pelvis and joints at a stage when those are commonly sore. It also avoids the impact and fall risk that come with some land-based activities. The cautions attached to swimming in pregnancy are mostly about the surroundings rather than the exercise: hot tubs and spa pools raise the overheating question that ACOG addresses separately, and wet poolside floors are a slip hazard when balance is already changing.

Swimming: safer choices

• Swimming and aqua aerobics as part of the roughly 150 minutes a week of moderate activity ACOG recommends in an uncomplicated pregnancy.
• Using a pool at a normal swimming temperature rather than a heated therapy pool, spa or hot tub, where overheating becomes the concern.
• Continuing to swim through all three trimesters if you are comfortable, since buoyancy often makes it easier as the bump grows.
• Getting out if you feel dizzy, breathless, overheated or unwell, and telling a lifeguard if you feel faint.
• Taking care on wet poolside surfaces, since balance changes in pregnancy and slips are the more realistic hazard.

Swimming: what to avoid or double-check

• Avoid hot tubs, spa pools, steam rooms and saunas at the poolside, where ACOG guidance about not raising core temperature above about 102 F applies.
• Avoid diving and jumping into the pool, particularly later in pregnancy.
• Avoid swimming alone in open water, and avoid water where quality or currents are unknown.
• Avoid swimming if your waters have broken or you have unexplained bleeding, and follow any specific advice your clinician has given.
• Avoid pushing to exhaustion. The talk test applies in water as it does on land.

How SafeMama helps

SafeMama reads product labels rather than pool schedules, but it can help with the things that go with swimming, including sunscreen for outdoor pools, skincare, and any chlorine-related products you use afterwards.

Open the SafeMama app, scan the barcode or search the ingredient, then use the result as a starting point for a conversation with your healthcare provider.

Sources

• ACOG exercise during pregnancy
• NHS exercise in pregnancy