White Bear Lake Water Temperature
White Bear Lake in Washington County, Minnesota averages about 63°F at the surface in summer — warmest in Aug (~65°F) and coldest in Apr (~45°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 1,376 field readings (2010–2025) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is White Bear Lake warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? White Bear Lake scored A on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
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Frequently asked questions
What is the water temperature of White Bear Lake?
White Bear Lake has a typical summer surface temperature of about 63°F. It is usually warmest in August (around 65°F) and coldest in April (around 45°F). These are typical values by month from 1,376 EPA Water Quality Portal field readings (2010–2025), not a live reading.
When is White Bear Lake warmest?
Surface water at White Bear Lake is typically warmest in August, reaching about 65°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 White Bear Lake warm enough to swim?
At its typical summer peak of about 63°F, White Bear Lake rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this White Bear 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 — 1,376 readings from 2 monitoring stations 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.