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 (23 hrs ago).
- 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.
- SANTA MARGARITA R NR TEMECULA CAUSGS gauge · California · 3 ft³/s76°F34 mi1 day ago
- DEEP C NR HESPERIA CAUSGS gauge · California · 0 ft³/s79°F57 mi1 day ago
- TECOLOTE C AB FOOTBRIDGE NR SAN DIEGO CAUSGS gauge · California · 0 ft³/s68°F65 mi1 day ago
- MOJAVE R A LO NARROWS NR VICTORVILLE CAUSGS gauge · California · 4 ft³/s72°F69 mi1 day ago
- HILTON CYN C 0.25 MI BL BRADBURY DAM NR SANTA YNEZUSGS gauge · California · 6 ft³/s60°F146 mi1 day ago
- SANTA YNEZ R NR SANTA YNEZ CAUSGS gauge · California62°F146 mi1 day ago
- SANTA YNEZ R A HWY 154 NR SANTA YNEZ CAUSGS gauge · California · 22 ft³/s65°F148 mi1 day ago
- SANTA YNEZ R A SOLVANG CAUSGS gauge · California · 17 ft³/s69°F154 mi1 day ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.7(5,564)Laguna Beach
A beachfront park with a boardwalk, volleyball & basketball courts, a playground & a tide-pool area.
7.5 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.
8.6 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.
9.1 mi from your location
4.8(79)Little Corona Beach
Small, popular spot for scuba diving & sunset-watching, with views of Catalina Island & tide pools.
9.6 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
4.6(6,755)Doheny State Beach
Park area & beach has campsites in the southern end; volleyball, picnics & surfing up north.
12 mi from your location
4.6(974)Capistrano Beach Park
Sandy venue with beach volleyball, a basketball court & facilities; fire rings allowed, but no dogs.
12 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.
13 mi from your location
4.7(17,531)Newport Beach Pier
Scenic pier popular for fishing & ocean views, convenient to beach & nearby shops & restaurants.
13 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.