NOAA Ocean Update – August 20, 2026

Coastal Buoy Observations

Surf Alert: Water Temperature 71.8 °F and Wave Height 4.9 ft

The San Clemente Basin reports water around 71.8 °F with about 4.9 ft of swell in the mix. Winds are light, and air temperatures are mid-to-high 60s °F, suggesting pleasant beach conditions with manageable surf for most, though exposed breaks may feel higher due to swell. Next high and low tides are noted in the Shore / Tide section.

Area / Location
San Clemente Basin (32.5033, -118.0283)
Observation time 3:30 AM PST
Water temperature 71.8 °F
Wave height 4.9 ft
Wave period 7.1 sec
Wind speed and direction W 5.8 kt
Air temperature 68.4 °F
Water temperature graph

71.8 °F

Wave height graph

4.9 ft

Air temperature graph

68.4 °F

Secondary Buoy
Area / Location
Oceanside Offshore (33.1783, -117.4717)
Observation time 3:26 AM PST
Water temperature 73.8 °F
Wave height 3.3 ft
Wave period 15.4 sec
Wind speed and direction Unavailable
Air temperature Unavailable
Water temperature graph

73.8 °F

Wave height graph

3.3 ft

Air temperature graph

Unavailable

Shore / Tide
Area / Location
San Diego shore (32.7156, -117.1767)
Observation time 3:26 AM PST
Current water level Unavailable
Tide 1 Low: 5:34 AM PST, -0.029 ft
Tide 2 High: 11:52 AM PST, 5.523 ft
Tide 3 Low: 5:50 PM PST, 1.172 ft
Tide 4 High: 11:47 PM PST, 5.427 ft

Sources

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