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 (8 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.
- SANTA MARGARITA R NR TEMECULA CAUSGS gauge · California · 3 ft³/s76°F43 mi9 hrs ago
- DEEP C NR HESPERIA CAUSGS gauge · California · 0 ft³/s79°F64 mi9 hrs ago
- TECOLOTE C AB FOOTBRIDGE NR SAN DIEGO CAUSGS gauge · California · 0 ft³/s68°F68 mi9 hrs ago
- MOJAVE R A LO NARROWS NR VICTORVILLE CAUSGS gauge · California · 4 ft³/s72°F75 mi8 hrs ago
- HILTON CYN C 0.25 MI BL BRADBURY DAM NR SANTA YNEZUSGS gauge · California · 6 ft³/s60°F139 mi8 hrs ago
- SANTA YNEZ R NR SANTA YNEZ CAUSGS gauge · California62°F140 mi8 hrs ago
- SANTA YNEZ R A HWY 154 NR SANTA YNEZ CAUSGS gauge · California · 22 ft³/s65°F141 mi9 hrs ago
- SANTA YNEZ R A SOLVANG CAUSGS gauge · California · 17 ft³/s69°F147 mi8 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.8(79)Little Corona Beach
Small, popular spot for scuba diving & sunset-watching, with views of Catalina Island & tide pools.
0.1 mi from your location
4.7(17,531)Newport Beach Pier
Scenic pier popular for fishing & ocean views, convenient to beach & nearby shops & restaurants.
3.6 mi from your location
4.7(1,099)Newport Beach Municipal Beach
Sandy stretch popular for surfing, with a pier & a boardwalk backed by hotels, shops & restaurants.
3.7 mi from your location
4.7(5,564)Laguna Beach
A beachfront park with a boardwalk, volleyball & basketball courts, a playground & a tide-pool area.
5.9 mi from your location
4.7(8,776)Huntington State Beach
A popular surfing destination, this sandy 121-acre beach also offers a 8.5-mi. paved trail.
6.8 mi from your location
4.8(2,160)Treasure Island Park
Busy beach area offering swimming, scuba diving, tide pooling & other activities.
8.5 mi from your location
4.7(3,965)Aliso Beach
A busy spot for surfing & swimming, this beachfront park offers a concession stand & public showers.
8.7 mi from your location
4.7(13,981)Huntington Beach
This 3.5-mile stretch of beach & pier draws crowds & hosts pro surfing & volleyball competitions.
8.9 mi from your location
4.8(510)Table Rock Beach
Wooden steps lead to this quiet, sandy beach with striking cliffs & outcroppings, plus sunset views.
9.3 mi from your location
4.8(2,216)Salt Creek Beach
A steep hike from a parking lot leads to this sandy beach offering surfing & swimming.
11 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.