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Live Conditions
Every 30 min
Half Moon Bay · San Mateo Coast
46012 ↗
Period
—
seconds
Height
—
feet
Direction
—
swell from
SF Bar · San Francisco Coast
46026 ↗
Period
—
seconds
Height
—
feet
Direction
—
swell from
Bodega Bay · Marin and Sonoma Coast
46013 ↗
Period
—
seconds
Height
—
feet
Direction
—
swell from
What these readings mean
Period. The wave period carrying the most energy, which is the time for two successive crests to pass a fixed point. It is not the time between sets.
Height. The average height of the highest one third of all waves over a twenty minute sample. Buoy readings combine swell and locally generated wind waves.
Direction. The direction the waves at the dominant period are coming from, not the direction they are heading.
Source: NOAA National Data Buoy Center
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