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A backyard at dusk in fall with a steam tent on a covered porch, a silver cold plunge tub, steps with handrails and a robe on a hook
Cold Plunge Suoimk

Suoimk Silicone Cover Ice Bath Thermometer with Timer, Floating (Black)

Water temperature and a plunge timer on one floating display.

Best for checking a cold plunge before you get intiming short plungestubs chilled with ice

Cold water all feels the same to a hand after a few seconds, which is why a cold tub needs a thermometer. This one is a floating disc about 2.8 in (7.1 cm) across with the temperature on the top line of the display and a timer below it. The timer sets up to 20 minutes, and the maker says a reading settles about a minute after the unit goes into the water.

The stated rating is IPX6, so treat it as a floater rather than a diving instrument, and as a guide rather than a lab thermometer – no accuracy figure is given. It runs on one CR2032 coin cell, which is included.

Tip: Stir the water before you read it – melting ice leaves cold and warm layers, and the thermometer only knows the one it floats in.

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