Date & Time: Monday, September 14, 2026 at 7:21 PM PDT
San Luis Obispo County coastal areas are experiencing sunny to partly cloudy conditions with afternoon high temperatures reaching the mid to upper 60s (°F) across locations like Morro Bay, Port San Luis, and Pismo Beach, while current evening temperatures hover in the upper 50s (°F) to low 60s (°F). Winds along the coast are out of the northwest at 15 to 25 knots this evening, with occasional gusts reaching 30 knots under an active Small Craft Advisory.
Average wave sizes along open beaches are running between 4 and 6 feet, with total seas in offshore waters ranging from 5 to 7 feet. Nearshore buoy data near Diablo Canyon records primary swells coming from the northwest (289°) at 4.3 feet with an 8-second period, accompanied by water temperatures near 63.0°F. Further offshore, the Santa Lucia Escarpment buoy registers a primary northwest swell (314°) of 7.9 feet at an 8-second period, while the Harvest Buoy reports northwest swells (307°) at 7.2 feet with an 8-second period.
Tides at Port San Luis feature a morning low tide of 0.6 feet at 5:12 AM, a high tide of 5.4 feet at 11:25 AM, a afternoon low tide of 0.7 feet at 5:43 PM, and a final high tide of 4.9 feet at 11:45 PM. Tomorrow's marine conditions will see light northerly winds of 5 to 10 knots shifting northwest to 10 to 15 knots in the afternoon, with combined seas easing slightly to 4 to 6 feet and morning patchy fog giving way to mostly clear skies.