Live · updated daily from USGS
Swimmable water near you
2,137 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (8 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 595
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 229
- 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 OLD LYME, CTUSGS gauge · Connecticut77°F7.6 mi9 hrs ago
- 77°F8.6 mi8 hrs ago
- CONNECTICUT RIVER AT ESSEX, CTUSGS gauge · Connecticut78°F9.8 mi8 hrs ago
- EAST BRANCH EIGHTMILE RIVER NEAR NORTH LYME, CTUSGS gauge · Connecticut · 93 ft³/s67°F10 mi8 hrs ago
- ORIENT HARBOR AT ORIENT NYUSGS gauge · New York76°F14 mi8 hrs ago
- SHELTER ISLAND SOUND AT SHELTER ISLAND NYUSGS gauge · New York77°F20 mi9 hrs ago
- CONNECTICUT RIVER AT MIDDLE HADDAM, CTUSGS gauge · Connecticut · 2,100 ft³/s78°F24 mi9 hrs ago
- 81°F36 mi8 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(147)Rocky Neck State Park Bathing Beach
Sandy beach featuring a boardwalk, a seasonal pavilion & nearby park amenities & bath facilities.
2.9 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.
5.3 mi from your location
4.4(204)Ocean Beach
Vibrant beach offering an outdoor swimming pool with water slides, mini golf, an arcade & boardwalk.
5.3 mi from your location
4.2(684)Esker Point Beach
Mellow local beach offering no-lifeguard swimming, shaded picnic areas & volleyball courts.
10 mi from your location
4.2(255)Williams Beach Park
Small seasonal beachfront park offering swimming, a playground, sports fields & a picnic area.
13 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.
19 mi from your location
4.6(3,425)Misquamicut State Beach
Quaint local beach with a half-mile sandy expanse, pavilions & showers, close to eateries & hotels.
21 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.
21 mi from your location
4.5(102)Higganum Reservoir State Park
Sprawling reservoir & walk-in park offering fishing, hiking & hunting, plus a car-top boat launch.
22 mi from your location
4.4(15)Lake Montauk
Private homes ring this quaint bay featuring restaurants & marinas with boat traffic.
23 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.