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The Water Around Us
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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 (9 hrs ago).

Clear location
  • 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.

  1. Ludlum Thorofare at Sea Isle City NJUSGS gauge · New Jersey
    80°F2.7 mi10 hrs ago
  2. Great Channel at Stone Harbor NJUSGS gauge · New Jersey
    81°F5.3 mi10 hrs ago
  3. 090089-- Oyster Lab 4 ObsUSGS gauge · New Jersey
    58°F11 mi10 hrs ago
  4. Great Egg Harbor Bay at Ocean City NJUSGS gauge · New Jersey
    77°F14 mi10 hrs ago
  5. Cape May Harbor at Cape May NJUSGS gauge · New Jersey
    76°F15 mi9 hrs ago
  6. Beach Thorofare at Margate NJUSGS gauge · New Jersey
    79°F18 mi9 hrs ago
  7. Maurice R at Mauricetown NJUSGS gauge · New Jersey
    80°F19 mi9 hrs ago
  8. Maurice River at Bivalve NJUSGS gauge · New Jersey
    80°F19 mi9 hrs ago

Nearest swimmable spots

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

Wildwoods Beach Ball Sign4.7(5,176)

Wildwoods Beach Ball Sign

Tourist attraction · Wildwood, New Jersey

Photography is popular at these iconic letters that spell “Wildwood” in front of the ocean.

11 mi from your location

Cape May Beach NJ4.7(973)

Cape May Beach NJ

Beach · New Jersey
Camping nearby

Standby featuring a boardwalk near restaurants, Victorian-style homes & seasonal lifeguards.

17 mi from your location

Sunset Beach4.8(5,921)

Sunset Beach

Tourist attraction · Cape May, New Jersey

Scenic beach with the submerged ruins of the concrete SS Atlantus & quartz crystals in the sand.

18 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.