Exposure to extreme cold triggers in humans various of physiological responses, which is necessary to control is necessary when it comes to occupational exposure. The objective of the present study was to analyze the evolution of core temperature, mean skin temperature during exposure to extreme cold (-20 ºC), with the usual protection for this type of exposure. From a total of 12 healthy individuals using a climatic chamber, intra-abdominal temperature and skin temperature were measured during and after the exposure period. The results demonstrate a decrease in core temperature and mean skin temperature at the initial moments of the test, from an increase to the end of exposure. The choice of individual protective equipment with the appropriate thermal insulation as well as the protection of the extremities is fundamental in order to guarantee the safety and the comfort of the exposed individuals. Further studies should be conducted using larger samples with a greater diversity of individual factors.