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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 (22 hrs ago).

Clear location
  • 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.

  1. PECONIC RIVER AT COUNTY HWY 105 AT RIVERHEAD NYUSGS gauge · New York
    81°F1.1 mi22 hrs ago
  2. SHELTER ISLAND SOUND AT SHELTER ISLAND NYUSGS gauge · New York
    77°F20 mi23 hrs ago
  3. ORIENT HARBOR AT ORIENT NYUSGS gauge · New York
    76°F24 mi22 hrs ago
  4. FLAX POND AT OLD FIELD NYUSGS gauge · New York
    73°F25 mi22 hrs ago
  5. CONNETQUOT RIVER DISTRIBUTARY NEAR OAKDALE NYUSGS gauge · New York
    65°F28 mi22 hrs ago
  6. NISSEQUOGUE RIVER AT LANDING AVE AT SMITHTOWN, NYUSGS gauge · New York
    66°F29 mi23 hrs ago
  7. HOUSATONIC RIVER NR NELLS ISLAND NR STRATFORD, CTUSGS gauge · Connecticut
    75°F30 mi23 hrs ago
  8. CONNECTICUT RIVER AT OLD LYME, CTUSGS gauge · Connecticut
    77°F32 mi23 hrs ago

Nearest swimmable spots

Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.

Cupsogue Beach County Park4.7(1,300)

Cupsogue Beach County Park

Park · Westhampton Beach, New York

Beachfront park featuring lifeguard-supervised swimming, bass fishing, camping & a concession stand.

11 mi from your location

Georgica Beach4.6(172)

Georgica Beach

Public beach · East Hampton, New York

Sandy stretch of public beach mostly used for sunbathing, swimming & picnicking.

23 mi from your location

West Wharf4.8(16)

West Wharf

Beach · Connecticut

A 1.8-acre beach with a pier, boat moorings, parking lot in an old shipbuilding area.

24 mi from your location

East Hampton Main Beach4.6(851)

East Hampton Main Beach

Public beach · East Hampton, New York

Popular East Hampton ocean beach provides lifeguards plus a snack bar & bathroom.

24 mi from your location

Stony Creek Beach4.4(40)

Stony Creek Beach

Beach · Branford, Connecticut

Peaceful beach offering swimming overseen by lifeguards on the edge of the town.

24 mi from your location

Hammonasset Beach State Park4.5(2,455)

Hammonasset Beach State Park

State park · Madison, Connecticut

Popular destination features a 2-mile-long beach with a boardwalk, boat launch & 550 campsites.

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.