Typical September highs at Olde Port Beach reach about 76°F, with reliable beach weather July to October. Olde Port Beach is located in San Luis Obispo, California.
San Luis Obispo, California · live parking & conditions · updated June 19, 2026
In a typical year September is the warmest month here, with highs near 76°F, and it's reliably beach weather July to October. Tap Olde Port Beach on the map for live surf, wind, water temperature, UV and tide times.
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