NOAA Ocean Update – August 21, 2026 (2:25 AM)

Coastal Buoy Observations

Surf Alert: Water temperature 71.8 °F and Wave height 3.9 ft.

San Clemente Basin reports water at 71.8 °F with a wave height around 3.9 ft and a light WNW breeze (5.8 kt). Oceanside Offshore shows water at 75.6 °F with no wind or air temperature data available. Next high: 11:52 AM PST and Next low: 5:34 AM PST.

Primary Buoy
Area / Location
San Clemente Basin (32.5033, -118.0283)
Observation time
5:50 PM PST 08/20/26
Wave period
13 sec
Wind speed and direction
WNW (290°), 5.8 kt
Water temperature graph

71.8 °F

Wave height graph

3.9 ft

Air temperature graph

69.6 °F

Secondary Buoy
Area / Location
Oceanside Offshore (33.1783, -117.4717)
Observation time
5:56 PM PST 08/20/26
Wave period
14 sec
Wind speed and direction
Unavailable
Water temperature graph

75.6 °F

Wave height graph

2.6 ft

Air temperature graph

Unavailable

Shore / Tide
Area / Location
San Diego shore (32.7156, -117.1767)
Observation time
5:56 PM PST 08/20/26
Current water level
4.228 ft
Tide 1
High: 3:55 PM PST, 4.879 ft
Tide 2
Unavailable
Tide 3
Unavailable
Tide 4
Unavailable
Sources:

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