Extensive multi-year ice and radiation observations conducted on Lake Vendyurskoe in 1995-2013 were summarized in the database “Radiation regime of Lake Vendyurskoe: Results of long-term observations” (Certificate of state registration № 2014620152, date of registration 20 January 2014). The database is a set of interlinked tables containing information on the radiation regime and the optical properties of the snow and ice cover of Lake Vendyurskoe. The database includes photographs of the lake surface and lake ice samples. The structure of the database allows for a variety of queries to be made for analyzing the radiation regime of the lake. The main objectives of the database are analysis of the radiation regime of the lake and the optical properties of the snow and ice cover, assessment of solar radiation attenuation in snow and ice depending on the state of the lake surface. The database can be used for research purposes by hydrologists, hydrophysics, as well as for training purposes as visual material in geographical and meteorological universities.