The corrosion compatibility of zircaloy-2 was studied in strong oxidising permanganate based acidic (HMnO₄) medium using impedance spectroscopy and potentiodynamic anodic polarization methods at room temperature (28°C) and elevated temperatures (65 and 90°C). The average corrosion rate of zircaloy-2 in HMnO₄ medium (0.417–8.33 mM) was found to be 1.32 X 10^-4 μm h^-1 at 28°C, 2.59 X10^-4 μm h^-1 at 65°C and 3.53 X10^-4 μm h^-1 at 90°C. At 28°C, the polarisation resistance R_p values obtained from impedance spectrum were higher (in kΩ) when compared to R_p values at 65 and 90°C, indicating a lower corrosion rate at lower temperature. Comparative studies with 2.5 mM H₂SO₄ and platinum (as a working electrode) showed the effects of oxidising nature and participation of additional redox reactions in HMnO₄ medium. Cyclic polarisation studies showed the absence of pitting attack on zircaloy-2.