Can You Swim With a Smartwatch? Reading Water Ratings for Sport

Can you swim with your smartwatch?

The short answer is yes, but only if your watch has a water resistance rating that matches the activity. Most smartwatches sold today are built to handle accidental splashes and rain, but not all are safe for intentional submersion. For swimming, you need a watch that is explicitly rated for water contact, not just splash-proof.

According to the World Health Organization, regular physical activity such as swimming contributes to better cardiovascular health, muscle strength, and mental well-being. If you plan to track your swims, your watch must survive the water. The Apple Watch Ultra, for example, is described in the Apple Watch User Guide as built for outdoor adventures and capable of diving the world's oceans. That tells you it has a high level of water resistance, but you should always verify the exact rating for any model you consider.

What water resistance ratings mean

Water resistance is usually expressed in two ways: ATM (atmospheres) and IP codes (Ingress Protection). ATM measures the static pressure a watch can withstand, where each ATM roughly corresponds to 10 meters of depth in still water. IP codes use two digits: the first for solid particle protection, the second for liquid ingress. For example, an IP68 rating is common for high-end consumer electronics, but the exact test conditions vary by manufacturer.

Rather than memorizing numbers, focus on what the rating claims. A watch marked 3 ATM is generally safe for hand washing and light rain, while 5 ATM or higher is often suitable for swimming. However, these are general guidelines, and you should read the specific product page to see what activities the manufacturer endorses. For a deeper dive into ATM, read 5ATM water resistance.

How ratings relate to swimming, showering, and diving

Showering and swimming impose different challenges. A shower involves hot water, steam, and soap, which can degrade seals over time. Most watches with a basic rating (e.g., 3 ATM) handle showering fine, but steam can seep in through tiny gaps. Swimming in a pool or open water adds movement, which increases pressure and may stress gaskets. Diving, even at modest depths, requires a much higher rating and often a dedicated dive mode.

A general rule of thumb: if you only need to wear your watch in the shower, a lower rating will do. For lap swimming in a pool, choose a watch marketed as swim-proof, typically with a rating of 5 ATM or higher. For open-water swimming or snorkeling, look for a watch with an explicit open-water swim mode and GPS. For scuba diving, you need a watch like the Apple Watch Ultra that is specifically designed for underwater use, not just a high ATM number.

Remember that water resistance is not permanent. Seals and gaskets wear out with age and temperature changes, so even a high-rated watch can lose its integrity over time.

What to check in the specifications

Before trusting your watch in water, read the specifications carefully. Look for the water resistance rating in ATM or IP notation, and note any qualifying statements. Some watches claim to be 'water resistant' but only for minor splashes, while others state 'suitable for swimming.' The manufacturer's own page is the authoritative source.

Check three things: first, the numeric rating (e.g., 5 ATM, 10 ATM). Second, whether the page lists 'swimming' or 'water sports' among approved activities. Third, if the watch has a water lock mode or a feature that ejects water from the speaker after swimming. These features are common on swim-friendly watches.

If the specs mention a depth rating, confirm whether it applies to static pressure (like a pool) or dynamic pressure (like moving in water). For cold-water swimming, also consider the operating temperature range.

Extra features for swimming

Beyond the rating, a good swim watch includes features that make tracking easier. A water lock mode disables the touchscreen to prevent accidental taps while submerged, and a speaker ejection function uses sound to clear water from the speaker grill.

For pool swimming, look for automatic lap counting and stroke detection. For open-water swimming, GPS is essential to track distance and pace; the GPS.gov site describes how GPS provides positioning and navigation services that enable accurate tracking. Many watches also allow you to set a pool length, which improves lap counting accuracy.

Care after swimming

Even with a high water resistance rating, you should rinse your watch with fresh water after swimming in a pool or the sea. Chlorine and salt can corrode the case and the speaker grille over time. Gently dry it with a soft cloth, and make sure the speaker is clear of water before using audio.

Avoid hot showers, saunas, and steam rooms, as heat can expand air inside the watch and compromise the seals. If you swim in saltwater, follow the manufacturer's care instructions.

Choosing a watch for your water activity

Your choice of smartwatch should depend on how and where you plan to use it in water. If you only need a watch that survives occasional rain or hand washing, a basic model will do. If you are a serious swimmer who wants to track laps, strokes, and heart rate, look for a dedicated swim-tracking watch from a reputable brand such as Garmin or Apple.

For open-water swimming or triathlon training, a GPS watch with a built-in swim mode is ideal. For scuba divers, only a watch built for diving, like the Apple Watch Ultra, offers the combination of depth measurement and water resistance. To help you choose, review the best Garmin smartwatches, GPS smartwatches, or Apple smartwatches.

What to pick for your use

Questions

Can I swim with my smartwatch?

Yes, if it has a proper water resistance rating. Check the specification for swimming suitability. Most watches with a rating of 5 ATM or higher are designed for swimming, but you should always verify the manufacturer's stated activities.

What does ATM mean on a smartwatch?

ATM stands for atmosphere, a unit of pressure. Higher ATM values generally mean better water resistance. See 5ATM water resistance for a detailed breakdown.

Can I shower with my smartwatch?

Usually yes if the watch has at least a basic rating (e.g., 3 ATM). However, hot water and steam can damage seals over time, so it is safer to remove the watch before hot showers or saunas.

Can I dive with my smartwatch?

Only if it is specifically rated for diving, such as the Apple Watch Ultra, which is designed for underwater activities. Standard smartwatches are not suitable for scuba diving, even if they have a high ATM rating. Check the depth rating and any dive-specific certifications.

Does water resistance last forever?

No, seals and gaskets can wear out over time, so the rating may degrade. Factors like age, temperature changes, and physical shocks can affect integrity. See water resistance wears out for signs to look out for.