Warnings
vjetar grmljavinska oluja
Open
River water temperatures
  1. Home
  2. Data and Observations
  3. Hydrological data

River water temperatures on   17 Apr 2026 / 18 Apr 2026

 River gauge  River 19 22 01 04 07 10 13 16
 Donji Miholjac  Drava 15.01 14.92 14.77 14.67 14.86 15.29 15.77
 Batina  Dunav 13.3 13.2 13.1 13.1 13.2 13.5 13.8
 Vukovar  Dunav 13.9 13.8 13.7 13.6 13.8 14.0 14.3
 Ilok most  Dunav 14.3 14.1 13.8 13.6 13.8 14.2 14.6
 Bregana-remont  Bregana 11.4 11.1 10.4 9.8 9.7 10.2 10.9
 Samobor  Gradna 13.6 12.1 11.1 10.3 10.5 12.8 15.5
 Bračak  Krapina 13.8 13.7 13.5 13.3 13.2 13.2 13.5
 Luketići  Korana 10.1 9.7 9.3 8.9 9.1 10.3 11.1
 Jarče Polje  Donja Dobra 12.4 11.1 10.6 10.3 10.6 10.9 11.4
 Zamost 2  Čabranka 11.9 10.8 9.9 9.3 9.9 11.5 12.9
 Kozjak most  Kozjak jezero 9.5 9.28 9.32 9.45 9.52 9.77 10.02
 Portonski most  Mirna 12.2 12.2 12.2 12.2 12.2 12.2 12.2
 Izvor Rječine  Rječina 7.4 7.4 7.4 7.4 7.4 7.4 7.4
 Prevjes  Zrmanja 12.3 11.7 10.5 9.5 9.4 10.8 12.2
 Krupa  Krupa 11.9 11.5 11.1 10.9 10.9 11.3 11.6
 Roški slap  Krka 13.6 13.6 13.5 13.5 13.4 13.8 14.2
 Nacionalni park  Krka 14.1 14.2 14.3 14.4 14.4 14.4 14.4
 Dusina  Matica Vrgorska 14.7 14.6 14.5 14.3 14.2 14.5 14.7
 Metković  Neretva 13.6 13.0 12.2 11.9 12.2 12.7 13.4

River water temperatures on   18 Apr 2026

 River gauge  River 04 07 10 13 16
 Donji Miholjac  Drava 14.77 14.67 14.86 15.29 15.77
 Batina  Dunav 13.1 13.1 13.2 13.5 13.8
 Vukovar  Dunav 13.7 13.6 13.8 14.0 14.3
 Ilok most  Dunav 13.8 13.6 13.8 14.2 14.6
 Bregana-remont  Bregana 10.4 9.8 9.7 10.2 10.9
 Samobor  Gradna 11.1 10.3 10.5 12.8 15.5
 Bračak  Krapina 13.5 13.3 13.2 13.2 13.5
 Luketići  Korana 9.3 8.9 9.1 10.3 11.1
 Jarče Polje  Donja Dobra 10.6 10.3 10.6 10.9 11.4
 Zamost 2  Čabranka 9.9 9.3 9.9 11.5 12.9
 Kozjak most  Kozjak jezero 9.32 9.45 9.52 9.77 10.02
 Portonski most  Mirna 12.2 12.2 12.2 12.2 12.2
 Izvor Rječine  Rječina 7.4 7.4 7.4 7.4 7.4
 Prevjes  Zrmanja 10.5 9.5 9.4 10.8 12.2
 Krupa  Krupa 11.1 10.9 10.9 11.3 11.6
 Roški slap  Krka 13.5 13.5 13.4 13.8 14.2
 Nacionalni park  Krka 14.3 14.4 14.4 14.4 14.4
 Dusina  Matica Vrgorska 14.5 14.3 14.2 14.5 14.7
 Metković  Neretva 12.2 11.9 12.2 12.7 13.4
Measurements of river water temperatures

River temperatures are an important indicator of the state of the environment, as water, due to its good thermal conductivity, is a direct indicator of surface and underground temperature of the entire upstream basin, but also beyond.

There are eight river temperature values shown in the table with a three-hour frequency. The displayed values were measured at the specified hour on 20 hydrological stations in different parts of Croatia. Modernization of hydrological stations is in progress so the table will complement as new temperature sensors will be installed on the bathing rivers.

The measurements are carried out with temperature probes which continually measure temperature at a depth of 0.5 to 1 meter. That are the temperature sensors Pt100 (type RTD), OTT PLS pressure probes or OTT Ecolog 500/1000 measuring systems. Measurements are taken uninterruptedly with continuous data records, and hourly temperature values are published in near real time.

At some river gauges measurements are still taken manually. In those cases, a thermometer with lower measurement limits from 0°C to -5°C is used. The thermometer is integrated in the protective metal case which is perforated on the bottom side so that the water can circulate freely around the lower part of the thermometer. Measurement is taken in the middle of the river flow, and the thermometer is kept at the certain depth up to three to five minutes. Such measurements are taken once a day and are not shown in the table. Croatian Meteorological and Hydrological Service (DHMZ) has had data on river temperatures at some hydrological stations since 1948.