The water temperature in Daugava estuary was at 15.2 degrees Celsius, in Lielupe estuary - 17.3 degrees Celsius, at Skulte - 12.3 degrees Celsius, but in the Baltic Sea at Liepaja - 17.8 degrees Celsius.
The temperature in Riga's Kisezers Lake reached 20.5 degrees Celsius, in Rezekne's Razna Lake - 21.4 degrees Celsius.
The temperature readings in Latvian rivers range from 19 to 23 degrees Celsius. The temperature in the Venta River is 22 degrees Celsius, in the Lielupe River - 23 degrees Celsius, in the Daugava River - 19 to 23 degrees Celsius, in the Gauja River - 20 degrees Celsius.

