Photo: Michael Boyd · CC BY 3.0
Get the AppWater temperature in the United States
Made for U.S. waters
Atlantic 34.9 °C, Pacific 30.4 °C, Gulf of Mexico 35.9 °C. The coldest spot is Niukluk River, Melsing C at Council, Alaska at 0.1 °C. As of October 16, 2026, 3,282 locations from USGS, NOAA NDBC and NOAA CO-OPS.
35.9 °C
Jul 25warmest spot · Gulf of Mexico, Pilottown
0.1 °C
Oct 2coldest · Niukluk River, Melsing C at Council, Alaska
17.5 °C
average of all spots
3,282
locations
coldest0.1°
average17.5°
warmest35.9°
Brr8°16°24°32 °C
- coldest 0.1°
- average 17.5°
- warmest 35.9°
History, BrrScore and warnings for every spot – in the app.Swim now
The warmest spot of each kind of water
Lake
31.2 °C
Jul 28Old River Lake site Oldr near Wallisville, Texas
USGS · then Las Casas Lake, Fort Buchanan, Guaynabo, Pr 29.3 °C and Lynchburg Reservoir, Cwa Canal Inflow near Baytown, Texas 28.3 °C
River
34.7 °C
Nf Kings River A 24TH Ave Branch, Lemoore, California
USGS · then Brazos River at Giww Flood Gates near Freeport, Texas 32.4 °C and Brazos River at Coe Flood Gates near Freeport, Texas 32.4 °C
Coast
35.9 °C
Jul 25Gulf of Mexico, Pilottown
NOAA CO-OPS · then Gulf of Mexico, Port Mansfield 35.9 °C and Atlantic, South Port Everglades 34.9 °C
Good to know
Water temperatures from coast to coast
The United States stretches across very different swimming climates. The Gulf of Mexico and southern Florida are warm enough for a swim through most of the year, while the Great Lakes, Maine and the Pacific Northwest offer a short window that peaks in July and August. California's Pacific coast stays brisk even in high summer because cold water wells up from the depths along the shore. Inland rivers and smaller lakes warm quickly once summer arrives and cool just as fast in autumn.
This page draws on 3273 monitoring sites. The USGS supplies the bulk of them, with 2209 river and lake stations. NOAA NDBC buoys cover the open ocean and the Great Lakes, NOAA CO-OPS adds tide and harbor stations along the coast, and NOAA NERRS SWMP contributes sensors in estuaries. Where a beach has no sensor of its own, it shows the reading of the nearest official station and says so. A small number of coastal spots rely on the Open-Meteo marine model, and those values carry a model label.
Rip currents are the main hazard on Atlantic and Gulf beaches. Lifeguarded beaches post flags for current conditions, and anyone caught in a rip should swim parallel to the shore rather than against it. States and local health departments sample beach water through the season and issue advisories when bacteria levels rise. On the Great Lakes, wind and waves can change within hours, and a strong offshore wind can pull cold water up to the surface near the beach.
Regions
United States, region by region
8 regions, each with today's range and its best-known spots. Tap one to open the region's list.
Atlantic11.2–34.9 °CPacific5.0–30.4 °CGulf of Mexico25.1–35.9 °CLake Michigan9.1–23.6 °CLake Erie16.4–24.5 °CKaribik28.6–30.5 °CColorado River7.4–21.6 °CWhite River5.1–22.1 °C
Atlantic11.2–34.9 °C
324 coasts & beaches
Atlantic, South Port Everglades 34.9 °C · Atlantic, Trident Pier, Port Canaveral 32.9 °C · Atlantic, Trout Cove, FL 31.3 °C
Pacific5.0–30.4 °C
273 coasts & beaches
Pacific, Apra Harbor, Guam 30.4 °C · Pacific, Kwajalein, Marshall Islands 30.1 °C · Pacific, Santa Cruz 29.5 °C
Gulf of Mexico25.1–35.9 °C
173 coasts & beaches
Gulf of Mexico, Pilottown 35.9 °C · Gulf of Mexico, Port Mansfield 35.9 °C · Gulf of Mexico, Lake Charles Bulk Terminal, LA 31.4 °C
Lake Michigan9.1–23.6 °C
41 lakes
Lake Michigan, Michigan City 23.6 °C · Lake Michigan, Wilmette 22.7 °C · Lake Michigan, Little Traverse Bay 22.4 °C
Lake Erie16.4–24.5 °C
40 lakes
Lake Erie, Euclid, Ohio, USA 24.5 °C · Lake Erie, Rocky River, Ohio, USA 24.4 °C · Lake Erie, Erie Nearshore buoy data for Erie, PA 23.9 °C
Karibik28.6–30.5 °C
32 coasts & beaches
Karibik, Culebra, PR 30.5 °C · Karibik, Culebra 30.5 °C · Karibik, Playa de Cascajo 30.5 °C
Colorado River7.4–21.6 °C
23 rivers
Colorado River, Imperial Dam, Az-ca 21.6 °C · Colorado River, Cooper Wasteway near Yuma, Arizona 21.3 °C · Colorado River, Ballinger, Texas 20.6 °C
White River5.1–22.1 °C
17 rivers
White River, Stout Gen. Stn. at Indianapolis, Indiana 22.1 °C · White River, Hazleton, Indiana 21.4 °C · White River, Petersburg, Indiana 21.3 °C
Right now
3,282 spots, 3 kinds of water
188 lakes2,088 rivers1,006 coasts & beaches
3,241 readings are measurements from official and open networks, above all USGS, NOAA NDBC and NOAA CO-OPS; 41 values come from models. Beyond temperature, this page carries 415 official bathing-water ratings, tides for 598 coastal spots, water level or discharge at 1,754 gauges and wave height at 246 buoys. Added in the last 30 days: Cooper C, Siphon Outlet near Cooper Landing, Alaska, Dry C, Galt, California and Coyote C, Edenvale, California and 16 more.
© BrrChecker – all rights reserved. The compilation, texts, images and BrrScore are protected; the readings belong to the sources named. Automated extraction is not permitted.
About the data
The United States is the largest network in the app: USGS gauges on rivers from Alaska to Florida, NOAA NDBC buoys and CO-OPS tide stations on every coast, the estuary sondes of the National Estuarine Research Reserves, Chicago's beach sensors and the nearshore probes off Oahu. Add 170 beaches that carry the reading of the nearest official station within two kilometres.
All spots
By region, with today's reading
Atlantic324 spots
Atlantic, Trident Pier, Port CanaveralSep 1832.9 °C
Atlantic, Trout Cove, FL31.3 °C
Atlantic, Cannon Bay, FL30.6 °C
Atlantic, Taylor River, FL30.3 °C
Atlantic, Key West, FL30.1 °C
Atlantic, Key West30.1 °C
Atlantic, Boca RatonModel30.0 °C
Atlantic, Highway Creek, FL29.8 °C
Atlantic, Lane River, FL29.8 °C
Atlantic, North River, FL29.8 °C
Atlantic, Shark River, FL29.8 °C
Atlantic, Vaca Key, FL29.8 °C
Atlantic, Watson Place, FL29.8 °C
Atlantic, Long Sound, FL29.7 °C
Atlantic, Manatee Bay, FL29.7 °C
Atlantic, Trident Pier, FLSep 1829.7 °C
Atlantic, Hollywood Beach FL29.6 °C
Atlantic, Delray Beach29.5 °C
Atlantic, Joe Bay, FL29.5 °C
Atlantic, Johnson Key, FL29.5 °C
Atlantic, Whipray Basin, FL29.5 °C
Atlantic, Miami29.4 °C
Atlantic, Gunboat Island, FL29.4 °C
Atlantic, Little Madeira, FL29.4 °C
Atlantic, Terrapin Bay, FL29.4 °C
Atlantic, Virginia Key, FL29.4 °C
Atlantic, Virginia Key29.4 °C
Atlantic, Harney River, FL29.3 °C
Atlantic, Lostmans River, FL29.3 °C
Atlantic, Islamorada29.2 °C
Atlantic, Duck Key, FL29.2 °C
Atlantic, Murray Key, FL29.2 °C
Atlantic, Peterson Key, FL29.2 °C
Atlantic, Vero Beach29.0 °C
Atlantic, Thursday Point, FL29.0 °C
Atlantic, Key Largo28.9 °C
Atlantic, Buoy Key, FL28.9 °C
Atlantic, Butternut Key, FL28.9 °C
Atlantic, Garfield Bight, FL28.9 °C
Atlantic, Middle Key, FL28.9 °C
Atlantic, Fort Myers, FL28.8 °C
Atlantic, Bob Allen, FL28.7 °C
Atlantic, Fort Myers28.7 °C
Atlantic, Broad River, FL28.5 °C
Atlantic, 225 NM South of Cape HatterasOct 328.4 °C
Atlantic, Diamond Shoals, NC28.4 °C
Atlantic, Cane Patch, FL27.9 °C
Atlantic, Willy Willy, FL27.8 °C
Atlantic, Cocoa Beach27.7 °C
Atlantic, New Smyrna BeachModel27.6 °C
Atlantic, Daytona Beach27.5 °C
Atlantic, Jacksonville Beach26.9 °C
Atlantic, Jekyll IslandModel26.6 °C
Atlantic, Dames Point, FL26.6 °C
Atlantic, Dames Point26.6 °C
Atlantic, CHR60WAVE25.7 °C
Atlantic, CHR60Oct 1425.6 °C
Atlantic, Hilton Head Island25.5 °C
Atlantic, Tybee Island25.5 °C
Atlantic, Fort Pulaski, GA25.5 °C
Atlantic, Fort Pulaski25.5 °C
Atlantic, Charleston25.2 °C
Atlantic, Isle of Palms25.1 °C
Atlantic, Kiawah Island25.1 °C
Atlantic, Sullivan's Island25.1 °C
Atlantic, FRP2WAVE25.0 °C
Atlantic, Baltimore, MD25.0 °C
Atlantic, Baltimore25.0 °C
Atlantic, Capers Nearshore Waves (CAP2WAVE)Oct 724.9 °C
Atlantic, Beaufort, NC24.9 °C
Atlantic, Wilmington, NC24.8 °C
and 204 more spots in the app
Pacific273 spots
Pacific, Apra Harbor, Guam30.4 °C
Pacific, Santa Cruz29.5 °C
Pacific, Kawaihae, HI28.6 °C
Pacific, Kawaihae28.6 °C
Pacific, Honolulu, HI28.5 °C
Pacific, Honolulu28.5 °C
Pacific, Kauai / Poipu Beach28.3 °C
Pacific, Nawiliwili, HI28.3 °C
Pacific, Nawiliwili28.3 °C
Pacific, Mokuoloe, HI27.9 °C
Pacific, Hawaii Yacht Club, HonoluluOct 1527.9 °C
Pacific, Mokuoloe27.9 °C
Pacific, Maui / Makena Big BeachModel27.6 °C
Pacific, Kaanapali27.5 °C
Pacific, Lanai / Hulopoe BayModel27.5 °C
Pacific, Maui / Napili Bay27.5 °C
Pacific, Maui / Wailea Beach27.5 °C
Pacific, Oahu / Ko Olina27.5 °C
Pacific, Hilo, Hilo Bay, Kuhio BayJul 3027.4 °C
Pacific, Molokai / PapohakuModel27.0 °C
Pacific, Oahu / Waimanalo27.0 °C
Pacific, Kauai / Hanalei BayModel26.9 °C
Pacific, Kauai / Tunnels BeachModel26.9 °C
Pacific, Pauwela, Maui, HI (187)Oct 1326.8 °C
Pacific, Maunalua Bay, Oahu26.5 °C
Pacific, Hanalei, Kauai, HI (202)Sep 925.8 °C
Pacific, AstoriaOct 924.9 °C
Pacific, Coronado Beach23.6 °C
Pacific, San Diego, CA23.6 °C
Pacific, San Diego23.6 °C
Pacific, Oceanside22.7 °C
Pacific, San Pedro, CA (092)22.5 °C
Pacific, Huntington Beach22.4 °C
Pacific, Newport Beach22.4 °C
Pacific, Laguna Beach22.2 °C
Pacific, San Clemente22.2 °C
Pacific, Group Campsite22.2 °C
Pacific, North Day Use Beach22.2 °C
Pacific, South Day Use Beach22.2 °C
Pacific, Carlsbad21.7 °C
Pacific, Manhattan Beach21.5 °C
Pacific, Redondo Beach21.5 °C
Pacific, Santa Monica21.5 °C
Pacific, Venice Beach21.5 °C
Pacific, Santa Monica Pier21.5 °C
Pacific, Santa Monica21.5 °C
Pacific, Del Mar21.4 °C
Pacific, Ventura / San BuenaventuraModel21.4 °C
Pacific, La Jolla21.3 °C
Pacific, Malibu21.3 °C
Pacific, Zuma Beach21.3 °C
Pacific, La Jolla, CA21.3 °C
Pacific, Blacks Beach21.3 °C
Pacific, La Jolla21.2 °C
Pacific, El Matador (Malibu)Model21.0 °C
Pacific, Harvest, CA (071)19.5 °C
Pacific, Port Chicago, CA18.6 °C
Pacific, Tiburon Pier, San Francisco Bay, CASep 2418.6 °C
Pacific, Port Chicago18.6 °C
Pacific, Point Sur, CA (157)18.4 °C
Pacific, Morro Bay18.3 °C
Pacific, Alameda, CA18.3 °C
Pacific, BM1 T-Pier, CA18.3 °C
Pacific, Alameda18.3 °C
Pacific, Encinal beach18.3 °C
Pacific, Morro Rock Beach18.3 °C
Pacific, Capitola18.0 °C
and 153 more spots in the app
Gulf of Mexico173 spots
Gulf of Mexico, PilottownJul 2535.9 °C
Gulf of Mexico, Port MansfieldAug 1735.9 °C
Gulf of Mexico, Carrollton, LASep 1231.3 °C
Gulf of Mexico, CarrolltonSep 1231.3 °C
Gulf of Mexico, Port Isabel29.8 °C
Gulf of Mexico, Baffin Bay29.6 °C
Gulf of Mexico, Naples / Vanderbilt BeachModel29.5 °C
Gulf of Mexico, Marco IslandModel29.3 °C
Gulf of Mexico, Naples BeachModel29.3 °C
Gulf of Mexico, Sanibel / Bowman's BeachModel29.2 °C
Gulf of Mexico, Sanibel IslandModel29.2 °C
Gulf of Mexico, TGLO TABS Buoy BOct 529.2 °C
Gulf of Mexico, Boca Grande / GasparillaModel29.1 °C
Gulf of Mexico, Captiva IslandModel29.1 °C
Gulf of Mexico, Venice FLModel29.0 °C
Gulf of Mexico, Galveston28.9 °C
Gulf of Mexico, Sarasota / Lido KeyModel28.9 °C
Gulf of Mexico, Siesta KeyModel28.9 °C
Gulf of Mexico, Rockport, TX28.7 °C
Gulf of Mexico, Lake Charles28.7 °C
Gulf of Mexico, Rockport28.7 °C
Gulf of Mexico, Port Aransas28.6 °C
Gulf of Mexico, Port Aransas28.6 °C
Gulf of Mexico, FLRACEP nWFS Buoy, 58m isobathOct 928.5 °C
Gulf of Mexico, High Island28.5 °C
Gulf of Mexico, East Bay28.4 °C
Gulf of Mexico, East Bay, FL28.3 °C
Gulf of Mexico, Manchester28.3 °C
Gulf of Mexico, Port Manatee28.2 °C
Gulf of Mexico, Seadrift, TX28.0 °C
Gulf of Mexico, Seadrift28.0 °C
Gulf of Mexico, Port Arthur27.9 °C
Gulf of Mexico, Copano Bay27.6 °C
and 53 more spots in the app
Lake Michigan41 spots
Lake Michigan, Michigan CityJul 3023.6 °C
Lake Michigan, WilmetteJul 3022.7 °C
Lake Michigan, Little Traverse BayJul 3022.4 °C
Lake Michigan, Winthrop HarborJul 3022.4 °C
Lake Michigan, Chicago PierJul 3022.0 °C
Lake Michigan, McGulpin Point North, MI WaveJul 3021.1 °C
Lake Michigan, Atwater 20-meter buoy (ATW20)Jul 3021.0 °C
Lake Michigan, Mackinac Straits WestJul 3020.6 °C
Lake Michigan, MuskegonJul 3019.1 °C
Lake Michigan, Salmon Unlimited WisconsinOct 716.8 °C
Lake Michigan, Little Traverse Bay Buoy, MIOct 716.7 °C
Lake Michigan, Chicago Buoy16.7 °C
Lake Michigan, MenomineeOct 1416.6 °C
Lake Michigan, South Green Bay, WIOct 1116.4 °C
Lake Michigan, Ludington Buoy, MIOct 816.1 °C
Lake Michigan, Holland16.1 °C
Lake Michigan, Sleeping Bear DunesSep 2816.0 °C
Lake Michigan, Central Beach15.9 °C
Lake Michigan, Muskegon Buoy, MIOct 1415.7 °C
Lake Michigan, North Beach14.9 °C
Lake Michigan, Port Inland13.8 °C
Lake Michigan, Mackinaw City11.8 °C
Lake Michigan, LudingtonJul 309.1 °C
Lake Erie40 spots
Lake Erie, Euclid, Ohio, USAJul 3024.5 °C
Lake Erie, Rocky River, Ohio, USAJul 3024.4 °C
Lake Erie, Erie Nearshore buoy data for Erie, PAJul 3023.9 °C
Lake Erie, Walnut CreekJul 3023.6 °C
Lake Erie, Euclid Beach BuoyJun 1721.8 °C
Lake Erie, Beulah Park BeachJun 1721.8 °C
Lake Erie, Walnut Creek BuoySep 2919.6 °C
Lake Erie, Manchester BeachSep 2919.6 °C
Lake Erie, Erie Nearshore Buoy, Erie, PASep 2919.5 °C
Lake Erie, Beach 9 - Pine TreeSep 2919.5 °C
Lake Erie, Beach no.8 PettinatoSep 2919.5 °C
Lake Erie, Beach 2 BuoySep 2918.9 °C
Lake Erie, Beach 6 BuoySep 2918.9 °C
Lake Erie, Cleveland18.9 °C
Lake Erie, Beach no.7 WaterworksSep 2918.9 °C
Lake Erie, K-9 Coastline18.8 °C
Lake Erie, Perkins Beach18.8 °C
Lake Erie, Euclid, OH18.7 °C
Lake Erie, Rocky River, OH18.6 °C
Lake Erie, Cleveland DO18.5 °C
Lake Erie, Sheffield Buoy18.4 °C
Lake Erie, Fairport18.4 °C
Lake Erie, Huron Buoy18.3 °C
Lake Erie, Chaska Beach18.3 °C
Lake Erie, Toledo18.2 °C
Lake Erie, Erie Islands Buoy18.0 °C
Lake Erie, Port Clinton Buoy18.0 °C
Lake Erie, Marblehead18.0 °C
Lake Erie, Ashtabula BuoyOct 817.6 °C
Lake Erie, Buffalo17.3 °C
Lake Erie, Maumee Bay BuoyOct 917.2 °C
Lake Erie, Buffalo17.1 °C
Lake Erie, Algonac16.4 °C
Lake Erie, Willow Beach16.4 °C
Karibik32 spots
Karibik, Culebra, PR30.5 °C
Karibik, Culebra30.5 °C
Karibik, Playa de Cascajo30.5 °C
Karibik, Vieques Island, PROct 530.1 °C
Karibik, Playa La Puntilla30.1 °C
Karibik, Limetree Bay30.0 °C
Karibik, Playa Domes29.9 °C
Karibik, Playa Pools29.9 °C
Karibik, Spanish Wall Beach29.9 °C
Karibik, San Juan, PR29.8 °C
Karibik, Playa Caza y Pesca29.8 °C
Karibik, Playa El Muelle29.8 °C
Karibik, Playa Peña29.8 °C
Karibik, Playa Peña29.8 °C
Karibik, Playa Peña29.8 °C
Karibik, Playa Pelícano29.7 °C
Karibik, Mayaguez29.1 °C
Karibik, Mayaguez, PR28.6 °C
Colorado River23 spots
Colorado River, Paria Beach17.6 °C
Colorado River, Granby, ColoradoOct 112.5 °C
Colorado River, Cisco, Utah12.5 °C
Colorado River, Windy Gap, near Granby, ColoradoOct 111.6 °C
White River17 spots
White River, Watson, Utah11.0 °C
Other waters and lidos2,359 spots
Rio Grande above Rio Conchos near Presidio, TexasJul 2832.2 °C
Hubbard Creek below Albany, TexasJul 2631.8 °C
Jobos Bay, Station 10Sep 1531.5 °C
Weeks BaySep 931.2 °C
Old River Lake site Oldr near Wallisville, TexasJul 2831.2 °C
Jobos Bay, Station 19Sep 1530.8 °C
Aimakapa Fishpond 2-inch Pvc monitoring pipe, HawaiiSep 1030.6 °C
Jobos Bay, Station 9Sep 1530.4 °C
Nueces River, Odem, Texas29.8 °C
Jobos Bay, Station 2029.7 °C
G -390829.7 °C
Faka-union River, the Mouth29.4 °C
Rio Grande, Mercedes, Texas29.1 °C
San Antonio River, SH 72 near Runge, TexasSep 3028.6 °C
Weeks Bay, Fish River28.5 °C
Rio Grande, Mission, Texas28.5 °C
Trinity River, Dallas, TexasOct 1228.3 °C
Mission Aransas, Aransas Bay28.2 °C
Santa Ana River, Prado Dam, CaliforniaOct 728.0 °C
Rio Grande, Roma, Texas27.9 °C
Manatee River, Rye, Florida27.7 °C
G -391127.7 °C
Apalachicola Bay, Dry Bar27.6 °C
Marys Creek, Benbrook, TexasSep 3027.6 °C
Rio Grande, Rio Grande Village, Big Bnd Np, TexasOct 1527.4 °C
Apalachicola Bay, Sand Beach27.4 °C
Peace River, Platt, Florida27.3 °C
G -396927.2 °C
G -377727.0 °C
Trinity River, Rosser, Texas26.9 °C
and 2,239 more spots in the app
Check first, then swim.
All 3,282 spots with history, BrrScore and alerts, free in the app.