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Santa Monica Weather in September
Santa Monica, Los Angeles, United States
About Santa Monica in September
Santa Monica sits directly on the Pacific coast and lives inside the marine layer for much of June and July — 'June Gloom' keeps mornings overcast and temperatures 10–15°F cooler than downtown. Sea breezes arrive reliably by early afternoon, making it one of the coolest zones in the metro.
For detailed monthly temperature and rainfall data for Los Angeles in September, see the Los Angeles September weather guide.