The manuscript considers the kinetics of water freezing in mesopores of three silica gels with the dominant pore diameter is equal to 3 nm, 6 nm and 15 nm analysed using differential scanning calorimetry. We test four cooling rates: 2.5 °C/min; 5.0 °C/min; 7.5 °C/min and 10.0 °C/min. By integrating DSC signal we determine the relation between ice content and temperature. It appears that the process rate depends only on the temperature and the extent of conversion. The isoconversional method is used to select most suitable kinetic model. The Šesták-Berggren model gives the best approximation of the conversion function. The activation energy obtained using Starink method is smaller than using Friedman method for all silica gels under investigation. The pre-exponential factor and reaction orders are estimated using the procedure introduced by Málek and depend on the mesopore diameter. We prove that the results obtained using the Šesták-Berggren model are in good agreement with the experimental data for all investigated cases. Additionally, the SEM and nitrogen adsorption/desorption tests are performed to analyse the influence of cyclic inpore water freezing on the silica gels microstructure.