Sturgeon Lake Water Temperature
Sturgeon Lake in St. Louis County, Minnesota averages about 56°F at the surface in summer — warmest in Aug (~58°F) and coldest in May (~47°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 173 field readings (2011–2019) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Sturgeon Lake warm enough to swim?
Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Want more than temperature? Sturgeon 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 ~61°F
Summer average ~68°F
Summer average ~54°F
Summer average ~68°F
Summer average ~70°F
Summer average ~55°F
Explore water temperatures
Where to stay near Sturgeon Lake
Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Sturgeon Lake — live availability and prices.
Top-rated places to stay near Sturgeon Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Sturgeon Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Sturgeon Lake — straight to your inbox. No spam, unsubscribe anytime.
Frequently asked questions
What is the water temperature of Sturgeon Lake?
Sturgeon Lake has a typical summer surface temperature of about 56°F. It is usually warmest in August (around 58°F) and coldest in May (around 47°F). These are typical values by month from 173 EPA Water Quality Portal field readings (2011–2019), not a live reading.
When is Sturgeon Lake warmest?
Surface water at Sturgeon Lake is typically warmest in August, reaching about 58°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 Sturgeon Lake warm enough to swim?
At its typical summer peak of about 56°F, Sturgeon Lake rates as "cold" for swimming. Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Where does this Sturgeon 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 — 173 readings from 2 monitoring stations between 2011 and 2019. 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.