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LakeQuality
A wave breaking on the cobble beach of Lake Superior at Duluth, Minnesota, with a wooded headland beyond

Mosslake_deep Water Temperature

Mosslake_deep in Vilas County, Wisconsin typically sits around 65°F at the surface in September — warmest in Jul (~71°F) and coldest in Jun (~61°F). That is a typical value for the month, not a live reading.

Typical in September
65°F
Cool
Summer average
66°F
Warmest (Jul)
71°F
Coldest (Jun)
61°F

Typical water temperature by month

Jan
Feb
Mar
Apr
May
Jun
61°
Jul
71°
Aug
Sep
65°
Oct
Nov
Dec

Typical surface water temperature by month, from 21 field readings (20242024) via the EPA Water Quality Portal. Months with too few readings are left blank.

Is Mosslake_deep warm enough to swim?

At its summer peak (~66°F): Cool

Brisk but swimmable for short dips — most people acclimate after the first few minutes.

Want more than temperature? Mosslake_deep scored NR on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.

Where to stay near Mosslake_deep

Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Mosslake_deep — 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 Mosslake_deep

Prices for Sep 4–6, 4 adults. Change dates on the map below.

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Frequently asked questions

What is the water temperature of Mosslake_deep?

Mosslake_deep typically sits around 65°F at the surface in September, from 21 EPA Water Quality Portal field readings (2024–2024). That is a typical value for the month, not a live reading.

When is Mosslake_deep warmest?

Surface water at Mosslake_deep is typically warmest in July, 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 Mosslake_deep warm enough to swim?

At its typical summer peak of about 66°F, Mosslake_deep rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.

Where does this Mosslake_deep 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 — 21 readings from 1 monitoring station between 2024 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.