This work proposes the characterization of the temperature dependence of the thermal properties of heart and lung tissues from room temperature up to > 90 °C. The thermal diffusivity (α), thermal conductivity (k), and volumetric heat capacity (Cv) ofex vivoporcine hearts and deflated lungs were measured with a dual-needle sensor technique.αandkassociated with heart tissue remained almost constant until ~ 70 and ~ 80 °C, accordingly. Above ~ 80 °C, a more substantial variation in these thermal properties was registered: at 94 °C,αandkrespectively experienced a 2.3- and 1.5- fold increase compared to their nominal values, showing average values of 0.346 mm2/s and 0.828 W/(m·K), accordingly. Conversely,Cvwas almost constant until 55 °C and decreased afterward (e.g.,Cv= 2.42 MJ/(m3·K) at 94 °C). Concerning the lung tissue, both itsαandkwere characterized by an exponential increase with temperature, showing a marked increment at supraphysiological and ablative temperatures (at 91 °C,αandkwere equal to 2.120 mm2/s and 2.721 W/(m·K), respectively, i.e., 13.7- and 13.1-fold higher compared to their baseline values). Regression analysis was performed to attain the best-fit curves interpolating the measured data, thus providing models of the temperature dependence of the investigated properties. These models can be useful for increasing the accuracy of simulation-based preplanning frameworks of interventional thermal procedures, and the realization of tissue-mimicking materials.