Recent days have seen Siberia's nickel capital hotter than Nice and on a par with Naples.
Norilsk - above the Arctic Circle - is known as one of the world's coldest cites, and is built on permafrost. Sunbathing picture was taken around lake Baikal, The Siberian Times
Norilsk has hit 32C in recent days with some forecasts predicting a blistering 35C by the weekend as the Arctic competes with the Mediterranean. The tundra turned hot as the Kransnoyarsk region industrial city - where foreigners are restricted from visiting - smashed records for heat established in 1979.
The average temperature in July is 13.6 but the mercury was touching 32C, a long way from the coldest-ever recorded temperature of minus 61C.
The previous hottest was 31.9C, more than three decades ago.
'I've never worn a bikini before in Norilsk, just to top up my tan', said Polina, 21, a student.
The hot spell is likely to last at least until 26 July, say forecasters.
Norilsk - above the Arctic Circle - is known as one of the world's coldest cites, and is built on permafrost. Frosty weather is a reality for 280 days a year. In summer time, average air temperatures are 14.6 degrees, before this year when Norilk finds itself in the furnace.
Irkutsk officials say supplies to major city could run out but Russian government says more analysis of environmental impact needed.
Pipeline will go through pristine Altai Mountains in supply route seen as economically vital by Kremlin.
Hope for millions around world with preparations under way for clinical trials on people starting next year.