The finite temperature of the ionic degrees of freedom plays either a
determining or an important role in a large variety of cluster propert
ies. We briefly review here the role played by the temperature in diff
erent cluster phenomena, such as: occurence of phase transitions, shap
e fluctuations, detailed properties of the static and dynamic structur
e formfactors, of the electron single-particle spectra and of the opti
cal response, and the emergence of the 1/f-noise in ionic dynamics.