Bass Lake: Northwest Basin Water Temperature
Bass Lake: Northwest Basin in Beltrami County, Minnesota averages about 73°F at the surface in summer — warmest in Jul (~77°F) and coldest in Jan (~32°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 71 field readings (2010–2025) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Bass Lake: Northwest Basin warm enough to swim?
Pleasant for swimming — the range most people find enjoyable without a wetsuit.
Want more than temperature? Bass Lake: Northwest Basin 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 ~72°F
Summer average ~73°F
Summer average ~73°F
Summer average ~73°F
Summer average ~76°F
Summer average ~73°F
Explore water temperatures
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Frequently asked questions
What is the water temperature of Bass Lake: Northwest Basin?
Bass Lake: Northwest Basin has a typical summer surface temperature of about 73°F. It is usually warmest in July (around 77°F) and coldest in January (around 32°F). These are typical values by month from 71 EPA Water Quality Portal field readings (2010–2025), not a live reading.
When is Bass Lake: Northwest Basin warmest?
Surface water at Bass Lake: Northwest Basin is typically warmest in July, reaching about 77°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 Bass Lake: Northwest Basin warm enough to swim?
At its typical summer peak of about 73°F, Bass Lake: Northwest Basin rates as "comfortable" for swimming. Pleasant for swimming — the range most people find enjoyable without a wetsuit.
Where does this Bass Lake: Northwest Basin 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 — 71 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.