Castle Rock
Protected Area
San Miguel Island Spec Special Closure
Why dive here
Castle Rock is a dive in California, United States. Water ranges 14-21°C, warmest July, August, September.
Castle Rock, off the California coast, offers a solid shore dive when conditions align. We’ve found the rocky reefs home to a good mix of local critters, from nudibranchs on the kelp to cabezon tucked in crevices. It's a site that rewards those who take their time exploring the nooks and crannies, great for a relaxed macro hunt if the surge isn't too strong.
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Conditions
Ocean conditions, forecast and tides for Castle Rock
Castle Rock Ocean Conditions
Monthly averages for Castle Rock, sourced from NOAA NDBC buoy data - nearest station: Topanga Nearshore, CA (103) (221km away)
October Averages
Sea Temperature
19°C
66°F · Range: 14–23.7°C
Air Temperature
18°C
65°F
Wave Height
0.6m
13.8s period
Based on 4 years of monitoring data · Data sources: NOAA NDBC buoy data
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