The data includes the values of δ¹⁸О, δ²Н and Dexc in modern snow and Holocene and modern ice wedges in the outcrops of the first marine terrace on the Onemen Bay coast, in vicinity of Anadyr town.Sampling was done in 2017. Stable isotope analyses were made at the isotope laboratory of the Geographical Department of Moscow University on a Finnigan Delta-V mass spectrometer with the standard gas-bench option (Prof. Yu. Vasil'chuk and Dr. N. Budantseva). The δ¹⁸О and δ²H values were expressed per mill (‰) as the deviation of the respective isotope ratios of the measured samples from the Vienna standard mean ocean water VSMOW (δ¹⁸О = 0 ‰, δ²H = 0 ‰) and Greenland Ice Sheet Precipitation GISP (δ¹⁸О = -24.76 ‰, δ²H = -189.5 ‰), as well as IAEA laboratory standards (IAEA 12, δ¹⁸О = -12.10 ‰, δ²H = -85.9 ‰; IAEA 13, δ¹⁸О = -33.35 ‰, δ²H = -257.2 ‰) and the domestic moscow University standard of fresh snow from the Garabashi glacier in the Cuacasus (δ¹⁸О = -15.60 ‰, δ²H = -110.0 ‰). The precision of the measurements was 0.1 ‰ for δ¹⁸О and 0.6 ‰ for δ²H. Stable isotopes ratios for snow were obtained by Prof. M. Gey, Hannover Isotope Laboratory, Geological Survey of Lower Saxony, Germany.