Live · updated daily from USGS
Swimmable water near you
2,141 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (2 hrs ago).
- Cold · below 60°F · 385
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 934
- Warm · above 86°F · 215
- 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.
- SHELTER ISLAND SOUND AT SHELTER ISLAND NYUSGS gauge · New York77°F3.8 mi1 day ago
- ORIENT HARBOR AT ORIENT NYUSGS gauge · New York76°F10 mi1 day ago
- 81°F18 mi1 day ago
- CONNECTICUT RIVER AT OLD LYME, CTUSGS gauge · Connecticut77°F22 mi1 day ago
- CONNECTICUT RIVER AT ESSEX, CTUSGS gauge · Connecticut78°F25 mi1 day ago
- 77°F28 mi1 day ago
- EAST BRANCH EIGHTMILE RIVER NEAR NORTH LYME, CTUSGS gauge · Connecticut · 93 ft³/s67°F30 mi1 day ago
- CONNECTICUT RIVER AT MIDDLE HADDAM, CTUSGS gauge · Connecticut · 2,100 ft³/s78°F40 mi1 day ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.6(172)Georgica Beach
Sandy stretch of public beach mostly used for sunbathing, swimming & picnicking.
6.2 mi from your location
4.6(851)East Hampton Main Beach
Popular East Hampton ocean beach provides lifeguards plus a snack bar & bathroom.
6.9 mi from your location
4.6(385)Kirk Park Beach
White-sand beach with seasonal lifeguards & a parking lot, plus toilet & shower facilities.
19 mi from your location
4.7(455)Ditch Plains Beach
A popular spot for surfing & swimming, this large beach offers seasonal lifeguards & scenic views.
21 mi from your location
4.4(15)Lake Montauk
Private homes ring this quaint bay featuring restaurants & marinas with boat traffic.
21 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.
22 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.
23 mi from your location
4.4(204)Ocean Beach
Vibrant beach offering an outdoor swimming pool with water slides, mini golf, an arcade & boardwalk.
25 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.