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Photo: Matthias Nonnenmacher · CC BY-SA 4.0

Warmest rivers today

United States 35.8 °C, Germany 28.9 °C, Ireland 20.8 °C. The coldest spot is Ostružná, Kolinec at 0.5 °C. As of September 20, 2026, 4,715 locations from USGS, Landeshydrographie AT and Water Survey of Canada.

35.8 °C
warmest spot · Hot C A Flume near Mammoth Lakes, California
0.5 °C
coldest · Ostružná, Kolinec
16.5 °C
average of all spots
4,715
locations

Updated on September 20, 2026

Swim now

The three warmest spots today

Regions

Country by country

8 regions, each with today's range and its best-known spots. Tap one to open the region's list.

Right now

4,715 spots, one kind of water

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About the data

All 4,715 readings are measurements from official and open networks, above all USGS, Landeshydrographie AT and Water Survey of Canada. Beyond temperature, this page carries 30 official bathing-water ratings and water level or discharge at 3,573 gauges. Added in the last 30 days: Aimakapa Fishpond 2-inch Pvc monitoring pipe, Hawaii, North Canadian River near El Reno, Oklahoma and White River near Fayetteville, Arkansas and 387 more.

USGSLandeshydrographie ATWater Survey of CanadaČHMÚARSONZ Regional Councils
All spots

By region, with today's reading

United States2,058 spots
and 1,938 more spots in the app
Germany450 spots
Erft, Glesch22.0 °C
Rhein, Worms20.9 °C
Mosel, Ruwer18.8 °C
Rhein, Köln18.5 °C
Isar, Landau18.4 °C
Saar, Kanzem18.4 °C
Teltowkanal18.3 °C
Weser, Brake18.2 °C
Weser, Brake18.2 °C
and 330 more spots in the app
Ireland352 spots
Bandon15.6 °C
Sneem14.7 °C
Doonbeg14.6 °C
and 232 more spots in the app
Austria303 spots
Donau, Grein17.6 °C
Donau, Linz17.5 °C
Melk, Lachau15.4 °C
Osternach14.6 °C
Pram, Riedau14.1 °C
Pram13.8 °C
Naarn, Haid13.8 °C
and 183 more spots in the app
Canada301 spots
Rainy River16.3 °C
and 181 more spots in the app
Czechia251 spots
Odra, Svinov16.1 °C
Dyje, Znojmo15.9 °C
Loděnice14.9 °C
Osoblaha14.9 °C
Sázava14.4 °C
and 131 more spots in the app
Norway209 spots
Hoffselva13.3 °C
Tysvær13.0 °C
Istreelva12.9 °C
Sandsli12.4 °C
Aspervik12.2 °C
Haukåselva11.1 °C
Forra, Feren10.8 °C
Skivika10.8 °C
Førdeelv9.9 °C
Grovåi9.2 °C
Jogla9.0 °C
and 89 more spots in the app
Slovenia168 spots
Drava, Ptuj19.6 °C
Reka, Neblo18.2 °C
Pšata, Loka16.0 °C
Sava, Litija15.6 °C
Rača, Vir15.6 °C
Sora, Suha I15.4 °C
Ižica, Ig14.0 °C
Rašica13.7 °C
Reka, Trnovo12.9 °C
and 48 more spots in the app
Other countries623 spots
Ebro, Ascó26.7 °C
Ebro, Xerta25.6 °C
Hammen, oost21.0 °C
Maros, Makó20.8 °C
Ebro, Haro20.6 °C
Tisza, Tokaj20.1 °C
Aare, Brugg19.5 °C
Grave, boven19.3 °C
Dee, Chester19.3 °C
Lith, boven19.1 °C
and 503 more spots in the app

Check first, then swim.

All 4,715 spots with history, BrrScore and alerts, free in the app.

Open in the BrrChecker app