  We investigate Natural Inflation with non-minimal coupling to gravity,
characterized either by a quadratic or a periodic term, within the Warm
Inflation paradigm during the slow roll stage, in both strong and weak
dissipation limits, and show that, in the case of $T$-linearly dependent
dissipative term, it can accommodate the spectral index $n_s$ and
tensor-to-scalar ratio $r$ observables given by Planck 2018 constraints, albeit
with a too small value of the e-folding number to solve the horizon problem,
providing thus only a partial solution to Natural Inflation issues. Assuming a
$T$-cubically dependent dissipative term can provide a solution to this
e-folding number issue.

General Relativity and Quantum Cosmology;Cosmology and Nongalactic Astrophysics