Live · updated daily from USGS
Swimmable water near you
2,135 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (16 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 594
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 228
- You
A map of the United States with one coloured dot per USGS sensor reporting a live water temperature. The readings are listed below.
Nearest live readings
The closest USGS sensors currently reporting a water temperature, nearest first.
- CONNECTICUT RIVER AT ESSEX, CTUSGS gauge · Connecticut78°F3.2 mi16 hrs ago
- EAST BRANCH EIGHTMILE RIVER NEAR NORTH LYME, CTUSGS gauge · Connecticut · 93 ft³/s67°F5.1 mi16 hrs ago
- CONNECTICUT RIVER AT OLD LYME, CTUSGS gauge · Connecticut77°F6.6 mi17 hrs ago
- CONNECTICUT RIVER AT MIDDLE HADDAM, CTUSGS gauge · Connecticut · 2,100 ft³/s78°F13 mi16 hrs ago
- ORIENT HARBOR AT ORIENT NYUSGS gauge · New York76°F18 mi16 hrs ago
- 77°F20 mi16 hrs ago
- SHELTER ISLAND SOUND AT SHELTER ISLAND NYUSGS gauge · New York77°F24 mi17 hrs ago
- NORTH BRANCH PARK RIVER AT HARTFORD, CTUSGS gauge · Connecticut · 33 ft³/s69°F31 mi17 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.5(102)Higganum Reservoir State Park
Sprawling reservoir & walk-in park offering fishing, hiking & hunting, plus a car-top boat launch.
10 mi from your location
4.5(147)Rocky Neck State Park Bathing Beach
Sandy beach featuring a boardwalk, a seasonal pavilion & nearby park amenities & bath facilities.
11 mi from your location
4.5(2,455)Hammonasset Beach State Park
Popular destination features a 2-mile-long beach with a boardwalk, boat launch & 550 campsites.
11 mi from your location
4.8(16)West Wharf
A 1.8-acre beach with a pier, boat moorings, parking lot in an old shipbuilding area.
13 mi from your location
4.5(2,222)Wadsworth Falls State Park
Swimming pool & trails in a picnic-ready park that contains a waterfall, streams & a pond.
17 mi from your location
4.4(5,900)Ocean Beach Park
1/2-mile beach boardwalk features an Olympic-size pool, miniature golf course, playgrounds & a cafe.
18 mi from your location
4.4(204)Ocean Beach
Vibrant beach offering an outdoor swimming pool with water slides, mini golf, an arcade & boardwalk.
18 mi from your location
4.4(40)Stony Creek Beach
Peaceful beach offering swimming overseen by lifeguards on the edge of the town.
19 mi from your location
4.5(193)River Highlands State Park
Forested park on the Connecticut River featuring trails, campsites & bluffs with scenic views.
19 mi from your location
About this map
Every pin is a live reading from a USGS real-time monitoring station, captured in a daily snapshot. Colours follow the site’s cold-water-safety thresholds and describe the water at that one sensor — usually a river or stream gauge, not a swim beach — so treat them as a guide to what the water is doing nearby, not a verdict on a specific spot. Readings are provisional and can be revised by the USGS. Your location only sorts this page: the coordinates appear in the address bar (rounded to about a mile) and are not saved to an account or our database.
Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.

