Pebble Lake Water Temperature
Pebble Lake in Otter Tail County, Minnesota averages about 68°F at the surface in summer — warmest in Aug (~71°F) and coldest in May (~54°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 131 field readings (2016–2025) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Pebble Lake warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Pebble 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
Explore water temperatures
Where to stay near Pebble Lake
Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Pebble Lake — live availability and prices.
Top-rated places to stay near Pebble 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 Pebble Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Pebble Lake — straight to your inbox. No spam, unsubscribe anytime.
Frequently asked questions
What is the water temperature of Pebble Lake?
Pebble Lake has a typical summer surface temperature of about 68°F. It is usually warmest in August (around 71°F) and coldest in May (around 54°F). These are typical values by month from 131 EPA Water Quality Portal field readings (2016–2025), not a live reading.
When is Pebble Lake warmest?
Surface water at Pebble Lake is typically warmest in August, reaching about 71°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 Pebble Lake warm enough to swim?
At its typical summer peak of about 68°F, Pebble Lake rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Pebble 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 — 131 readings from 2 monitoring stations between 2016 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.