The datasets include in-situ 10-minute measurements of subsurface water temperature taken at a depth of 20 cm at a site A (32.82 oN; 35.60 oE) located near the center of Lake Kinneret, during the period (Sept. 6 – 9, 2015). Lake Kinneret is located in Israel. The Campbell 107-L temperature probe was used (specifications are available online at https://www.campbellsci.asia/107-l ). The datasets also include meteorological measurements taken at the same site, such as air temperature, relative humidity, wind speed, upwelling and downwelling longwave (4.5 to 42 µm) radiation. The above meteorological measurements were taken at a height of 2 - 3 m above the lake surface. Measurements at the site A are associated with the Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research (https://www.ocean.org.il ). Data format: xlsx file. The file includes water temperature (WT, oC), wind speed (WS, m/s), air temperature (Tair, oC), relative humidity (RH, %), upwelling longwave radiation (Upwelling LW, W/m2) and downwelling longwave radiation (Downwelling LW, W/m2).