Live · updated daily from USGS
Swimmable water near you
2,139 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (4 hrs ago).
- Cold · below 60°F · 384
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 933
- Warm · above 86°F · 215
- 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.
- DEEP C NR HESPERIA CAUSGS gauge · California · 0 ft³/s79°F75 mi1 day ago
- MOJAVE R A LO NARROWS NR VICTORVILLE CAUSGS gauge · California · 4 ft³/s72°F78 mi1 day ago
- SANTA MARGARITA R NR TEMECULA CAUSGS gauge · California · 3 ft³/s76°F83 mi1 day ago
- HILTON CYN C 0.25 MI BL BRADBURY DAM NR SANTA YNEZUSGS gauge · California · 6 ft³/s60°F97 mi1 day ago
- SANTA YNEZ R NR SANTA YNEZ CAUSGS gauge · California62°F98 mi1 day ago
- SANTA YNEZ R A HWY 154 NR SANTA YNEZ CAUSGS gauge · California · 22 ft³/s65°F99 mi1 day ago
- SANTA YNEZ R A SOLVANG CAUSGS gauge · California · 17 ft³/s69°F105 mi1 day ago
- TECOLOTE C AB FOOTBRIDGE NR SAN DIEGO CAUSGS gauge · California · 0 ft³/s68°F109 mi1 day ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.6(1,249)Del Rey Lagoon
Small park featuring a saltwater lagoon with waterfowl, plus a baseball field & play area for kids.
0.5 mi from your location
4.7(2,581)Playa Del Rey Beach
Broad, peaceful sandy beach featuring volleyball courts, a paved bike path & fire pits.
0.9 mi from your location
4.6(3,184)Mothers Beach
Playground, picnic tables & other kid-friendly attractions at a surf-free sheltered beach.
1.5 mi from your location
4.5(16,442)Dockweiler Beach
Bustling public beach offering a hang gliding training park, bonfires & views of departing aircraft.
2.5 mi from your location
4.7(2,265)Ocean View Park
Busy beachfront park features paddle tennis, basketball & tennis courts, plus a grassy lawn & hill.
3.0 mi from your location
4.6(126,928)Santa Monica Pier
Storied seaside destination showcasing a range of shops & cafes, plus an amusement park & aquarium.
4.0 mi from your location
4.7(1,808)Bruce's Beach
Small local park known for its role in African-American history, as well as its scenic views.
5.2 mi from your location
4.7(13,872)Manhattan Beach Pier
This restored 928-ft. concrete pier is the oldest on the West Coast & features a cafe & an aquarium.
5.9 mi from your location
4.8(311)Longfellow Beach
Laid-back public beach with a long, wide expanse of sand, swings, lifeguard stands & a shower.
6.6 mi from your location
4.7(4,452)Will Rogers State Beach
Public beach featuring an on-site restaurant, volleyball courts, showers & a bike trail.
6.8 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.