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 (11 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.
- 75°F7.4 mi12 hrs ago
- FLAX POND AT OLD FIELD NYUSGS gauge · New York73°F20 mi11 hrs ago
- 75°F21 mi12 hrs ago
- 75°F24 mi12 hrs ago
- 70°F24 mi12 hrs ago
- 66°F28 mi12 hrs ago
- 81°F28 mi11 hrs ago
- CONNECTICUT RIVER AT MIDDLE HADDAM, CTUSGS gauge · Connecticut · 2,100 ft³/s78°F31 mi12 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(3,491)Lighthouse Point Park
An 1847 lighthouse anchors this beachfront that is popular with swimmers & a prime birding spot.
4.7 mi from your location
4.1(35)Silver Sands Beach
Compact sandy stretch on the Long Island Sound flanked by private residences, town beaches & a park.
6.0 mi from your location
4.6(857)Short Beach Park
Waterfront park & beach offering play & picnic areas as well as tennis courts & a par-3 golf course.
7.7 mi from your location
4.5(69)Pleasure Beach Park
Accessed by water taxi, this remote beach has a boardwalk, info depot, showers & picnic facilities.
11 mi from your location
4.5(5,054)Seaside Park
This 325-acre park features beaches, grassy areas & sports fields, plus an island wildlife preserve.
11 mi from your location
4.4(40)Stony Creek Beach
Peaceful beach offering swimming overseen by lifeguards on the edge of the town.
13 mi from your location
4.5(3,084)Sherwood Island State Park
235 acres on the coast offering beaches for swimming & fishing, plus picnic areas & a 9/11 memorial.
19 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.
20 mi from your location
4.6(15)Old Mill Beach
Sandy beach overlooking the sound, with a seasonal 1.8-acre park without restrooms or lifeguards.
20 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
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.