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

Dunl Lake Water Temperature

Dunl Lake in Washington County, Florida typically sits around 87°F at the surface in August — warmest in Aug (~87°F) and coldest in Jan (~62°F). That is a typical value for the month, not a live reading.

Typical in August
87°F
Warm
Summer average
84°F
Warmest (Aug)
87°F
Coldest (Jan)
62°F

Typical water temperature by month

Jan
62°
Feb
Mar
Apr
May
73°
Jun
83°
Jul
82°
Aug
87°
Sep
Oct
79°
Nov
62°
Dec

Typical surface water temperature by month, from 20 field readings (20192020) via the EPA Water Quality Portal. Months with too few readings are left blank.

Is Dunl Lake warm enough to swim?

At its summer peak (~84°F): Warm

Very comfortable for swimming. Warm surface water can also favor blue-green algae in nutrient-rich lakes, so check for advisories before you go in.

Want more than temperature? Dunl Lake water quality: clarity, algae, phosphorus, depth, fish species, and current advisories, all on one page.

Where to stay near Dunl Lake

Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Dunl 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 Dunl Lake

Prices for Sep 18–20, 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.

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Frequently asked questions

What is the water temperature of Dunl Lake?

Dunl Lake typically sits around 87°F at the surface in August, from 20 EPA Water Quality Portal field readings (2019–2020). That is a typical value for the month, not a live reading.

When is Dunl Lake warmest?

Surface water at Dunl Lake is typically warmest in August, reaching about 87°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 Dunl Lake warm enough to swim?

At its typical summer peak of about 84°F, Dunl Lake rates as "warm" for swimming. Very comfortable for swimming. Warm surface water can also favor blue-green algae in nutrient-rich lakes, so check for advisories before you go in.

Where does this Dunl 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 — 20 readings from 2 monitoring stations between 2019 and 2020. 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.