The climate of the Maremma Grossetana is typically mediterranean, with moderately warm summers and mitigated by the sea breezes of the maestral and the west; Winter is not particularly cold, with rare episodes of night frost and morning.
Rainfall averages between 550 and 650 mm. All places record a summery minimum and an autumn peak more or less accentuated.
The wind spins with an annual average of over 7 hours a day along the coast, in the stretch between Ombrone and Chiarone: the value is close to the absolute maximum of the entire Italian national territory