Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
sou'wester is a noun meaning "a strong wind from the southwest". It carries 2 recorded senses.
a strong wind from the southwest
waterproof hat with wide slanting brim longer in back than in front
Definitions, synonyms and semantic relations for sou'wester come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.