Cedar Island Lake Water Temperature
Cedar Island Lake in Stearns County, Minnesota typically sits around 65°F at the surface in September — warmest in Jul (~68°F) and coldest in Oct (~54°F). That is a typical value for the month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 231 field readings (2010–2024) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Cedar Island Lake warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Cedar Island Lake scored F 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 ~70°F
Summer average ~74°F
Summer average ~66°F
Summer average ~57°F
Summer average ~78°F
Summer average ~66°F
Explore water temperatures
Where to stay near Cedar Island Lake
Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Cedar Island Lake — live availability and prices. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Cedar Island Lake
Prices for Sep 4–6, 4 adults. Change dates on the map below.
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 Cedar Island Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Cedar Island Lake — straight to your inbox. No spam, unsubscribe anytime.
Frequently asked questions
What is the water temperature of Cedar Island Lake?
Cedar Island Lake typically sits around 65°F at the surface in September, from 231 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
When is Cedar Island Lake warmest?
Surface water at Cedar Island Lake is typically warmest in July, reaching about 68°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 Cedar Island Lake warm enough to swim?
At its typical summer peak of about 66°F, Cedar Island Lake rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Cedar Island 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 — 231 readings from 1 monitoring station between 2010 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.