USWaterLevels
🏊 Swimming Guide

Best Swimming Lakes in America

Real-time water temperature rankings. Find the warmest lakes for swimming near you.

🔥 Warmest Waters Right Now

1

Grand Calumet River At Columbia Av At Hammond, In

Indiana • River
161.8°F
Very Warm
2

Grand Calumet River At Columbia Av At Hammond, In

Indiana • River
159.6°F
Very Warm
3

Grand Calumet River At Columbia Av At Hammond, In

Indiana • River
158.7°F
Very Warm
4

Grand Calumet River At Columbia Av At Hammond, In

Indiana • River
157.8°F
Very Warm
5

Grand Calumet River At Columbia Av At Hammond, In

Indiana • River
157.1°F
Very Warm
6

Boiling River At Mammoth,Ynp

Wyoming • River
113.7°F
Very Warm
7

Boiling River At Mammoth,Ynp

Wyoming • River
113.5°F
Very Warm
8

Boiling River At Mammoth,Ynp

Wyoming • River
113°F
Very Warm
9

Boiling River At Mammoth,Ynp

Wyoming • River
112.5°F
Very Warm
10

Boiling River At Mammoth,Ynp

Wyoming • River
112.5°F
Very Warm
11

Shakett Creek At Cr 762 Nr Nokomis, Fl

Florida • River
94.3°F
Very Warm
12

Shakett Creek At Cr 762 Nr Nokomis, Fl

Florida • River
93.6°F
Very Warm
13

Shakett Creek At Cr 762 Nr Nokomis, Fl

Florida • River
93.4°F
Very Warm
14

Big Warm Spgs Nr Duckwater, Nv

Nevada • Lake
90.5°F
Very Warm
15

Big Warm Spgs Nr Duckwater, Nv

Nevada • Lake
90.5°F
Very Warm
16

Big Warm Spgs Nr Duckwater, Nv

Nevada • Lake
90.5°F
Very Warm
17

Big Warm Spgs Nr Duckwater, Nv

Nevada • Lake
90.3°F
Very Warm
18

Crystal River Near Crystal River Fl

Florida • River
90.3°F
Very Warm
19

Crystal River Near Crystal River Fl

Florida • River
89.8°F
Very Warm
20

Crystal River Near Crystal River Fl

Florida • River
89.4°F
Very Warm

Finding the Best Swimming Lakes

Water temperature is one of the most important factors for comfortable swimming. Most people find water temperatures between 75°F and 85°F ideal for swimming. Below 70°F, prolonged swimming can become uncomfortable, and below 60°F, cold-water risks increase significantly.

This page ranks US lakes and reservoirs by current water temperature, updated daily from USGS monitoring stations. During summer months (June-August), lakes in the southern states typically offer the warmest waters, while northern lakes may not reach comfortable swimming temperatures until July.

Beyond temperature, always check local safety advisories, water quality reports, and weather conditions before swimming. Look for designated swimming areas with lifeguards when possible.

Looking for specific lakes? Try our search tool, check Texas lakes, or view the national dashboard.

Swimming Lakes FAQ

What is the ideal water temperature for swimming?
Most people find water between 75°F and 85°F most comfortable for swimming. Competitive swimmers often prefer slightly cooler water around 77-82°F. Below 70°F, extended swimming can be uncomfortable.
Which US states have the warmest lakes?
Southern states like Florida, Texas, Louisiana, Alabama, and Georgia typically have the warmest lake temperatures, especially during summer months. Arizona and Nevada lakes can also reach very warm temperatures.