Whitewater Lake Water Temperature
Whitewater Lake in St. Louis County, Minnesota averages about 58°F at the surface in summer — warmest in Aug (~60°F) and coldest in May (~50°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 234 field readings (2019–2024) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Whitewater Lake warm enough to swim?
Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Want more than temperature? Whitewater Lake scored A on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby Minnesota lakes
Summer average ~66°F
Summer average ~50°F
Summer average ~51°F
Summer average ~70°F
Summer average ~70°F
Summer average ~51°F
Explore water temperatures
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Frequently asked questions
What is the water temperature of Whitewater Lake?
Whitewater Lake has a typical summer surface temperature of about 58°F. It is usually warmest in August (around 60°F) and coldest in May (around 50°F). These are typical values by month from 234 EPA Water Quality Portal field readings (2019–2024), not a live reading.
When is Whitewater Lake warmest?
Surface water at Whitewater Lake is typically warmest in August, reaching about 60°F. Lake surface temperature lags air temperature by several weeks, so the warmest water usually arrives in mid-to-late summer even though the hottest air can come earlier.
Is Whitewater Lake warm enough to swim?
At its typical summer peak of about 58°F, Whitewater Lake rates as "cold" for swimming. Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Where does this Whitewater Lake water temperature data come from?
Every temperature on this page is a typical (climatological) value computed from real surface-water field readings collected by state and federal agencies and published through the EPA Water Quality Portal — 234 readings from 2 monitoring stations between 2019 and 2024. They describe what is typical for each month, not the temperature right now.
About this data
Water temperatures are a climatology — the typical value for each month, averaged from real surface-water field readings collected by state and federal agencies and published through the EPA Water Quality Portal. They tell you what to expect, not the temperature at this moment. Actual conditions vary with recent weather, depth, and time of day.