Bear Head Lake Water Temperature
Bear Head Lake in St. Louis County, Minnesota averages about 60°F at the surface in summer — warmest in Jul (~62°F) and coldest in Oct (~51°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 692 field readings (2010–2025) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Bear Head Lake warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Bear Head 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 ~63°F
Summer average ~65°F
Summer average ~73°F
Summer average ~70°F
Summer average ~69°F
Summer average ~53°F
Explore water temperatures
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Frequently asked questions
What is the water temperature of Bear Head Lake?
Bear Head Lake has a typical summer surface temperature of about 60°F. It is usually warmest in July (around 62°F) and coldest in October (around 51°F). These are typical values by month from 692 EPA Water Quality Portal field readings (2010–2025), not a live reading.
When is Bear Head Lake warmest?
Surface water at Bear Head Lake is typically warmest in July, reaching about 62°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 Bear Head Lake warm enough to swim?
At its typical summer peak of about 60°F, Bear Head Lake rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Bear Head 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 — 692 readings from 1 monitoring station between 2010 and 2025. 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.