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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 (14 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. MILLSBORO POND OUTLET AT MILLSBORO, DEUSGS gauge · Delaware · 52 ft³/s
    82°F2.3 mi14 hrs ago
  2. MASSEY DITCH AT MASSEY LANDING, DEUSGS gauge · Delaware
    78°F13 mi14 hrs ago
  3. BROADKILL RIVER NEAR MILTON, DEUSGS gauge · Delaware
    82°F15 mi14 hrs ago
  4. BUCKS BRANCH DS OF CONRAIL RD AT CANNON, DEUSGS gauge · Delaware
    71°F17 mi15 hrs ago
  5. BEAVERDAM BRANCH AT HOUSTON, DEUSGS gauge · Delaware · 13 ft³/s
    71°F25 mi15 hrs ago
  6. MURDERKILL RIVER AT FREDERICA, DEUSGS gauge · Delaware
    81°F31 mi14 hrs ago
  7. Cape May Harbor at Cape May NJUSGS gauge · New Jersey
    76°F35 mi14 hrs ago
  8. CHOPTANK RIVER NEAR GREENSBORO, MDUSGS gauge · Maryland · 46 ft³/s
    76°F38 mi14 hrs ago

Nearest swimmable spots

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

Trap Pond State Park4.7(1,519)

Trap Pond State Park

State park · Laurel, Delaware
Camping nearby

Wetland forest with cypress trees features a nature center, trails & a pond for boating & fishing.

8.9 mi from your location

Delaware Seashore State Park4.6(1,082)

Delaware Seashore State Park

State park · Rehoboth Beach, Delaware
Camping nearby

Built in 1876, this restored, historic home offers period artifacts, history exhibits & a gift shop.

14 mi from your location

Bethany Beach4.7(98)

Bethany Beach

Beach · Delaware

Relaxed, sandy town beach featuring a wooden boardwalk lined with shops & eateries.

15 mi from your location

Bethany Beach Boardwalk4.7(3,218)

Bethany Beach Boardwalk

Tourist attraction · Bethany Beach, Delaware

This wooden boardwalk lined with charming clapboard houses goes past a plaza with a bandstand.

15 mi from your location

Indian Beach4.5(11)

Indian Beach

Beach · Delaware

This spacious beach is a popular summer destination for swimming, sunbathing, walking & ocean views.

16 mi from your location

Rehoboth Beach4.6(9,003)

Rehoboth Beach

Beach · Rehoboth Beach, Delaware

Known as the "Nation's Summer Capital," Rehoboth Beach is a charming one-square-mile coastal city in Sussex County, Delaware. Its mile-long boardwalk, clean shoreline, and family-friendly attractions like Funland amusement park and Thrasher's French Fries have drawn visitors since the 1870s. The beach earned a 5-star NRDC water quality rating and swells from 1,500 residents to over 25,000 in peak summer, offering tax-free shopping, diverse dining, and easy access to Cape Henlopen State Park.

16 mi from your location

Rehoboth Beach Boardwalk4.7(3,230)

Rehoboth Beach Boardwalk

Tourist attraction · Rehoboth Beach, Delaware

This mile-long waterfront boardwalk offers a charming, relaxed alternative to larger Jersey Shore and Ocean City boardwalks. Funland amusement park has thrilled families since 1962 with retro rides and a haunted mansion, while Thrasher's French Fries, Dolle's Candyland (since 1926), and Grotto's Pizza are boardwalk institution staples. Free summer concerts at the Rehoboth Beach Bandstand, tax-free Delaware shopping, and plenty of ocean-view benches complete the experience.

17 mi from your location

Fenwick Island State Park4.7(2,251)

Fenwick Island State Park

State park · Fenwick Island, Delaware

344 acres of shoreline on a barrier island featuring swimming areas & designated surfing spots.

17 mi from your location

Savannah Beach4.7(4,766)

Savannah Beach

Public beach · Lewes, Delaware

Public beach with shallow water & restrooms, attracting families for swimming, fishing & boating.

18 mi from your location

Ocean City Beach4.7(1,397)

Ocean City Beach

Beach · Ocean City, Maryland

Extensive, 10-mile-long public beach with water sports, a boardwalk & an amusement park.

19 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.