temperate has 1 distinct synonym spread across 1 of its 3 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is intemperate.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
(of weather or climate) free from extremes; mild; or characteristic of such weather or climate
“a temperate region”
not extreme in behavior
“temperate in his habits”
Synonyms, antonyms and the broader and narrower relations for temperate come from Princeton University’s WordNet. Full sources and licences.