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Reporting at Half Moon Bay State Beach
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Where Were You?

Half Moon Bay State Beach

TAR/OIL 7.5/10 0 reports today Β· last 3 days ago
Tar/Oil scores 0–10 Β· 10 clean
7.5 Sand
7.5 Water
Surf
SURF – Β· –
Offshore swell –
Wind
7.5 kt
sideshore Β· NNW
Tide ft MLLW
L 11:14 AM
now 2.6 ft falling Β· next L 2.1 Β· 11:14 AM
Temps
– Water
58.8Β°F Air

Tar/Oil Conditions

TAR/OIL SCORE (0-10 Β· 10 = clean) Β· 7 DAYSHow scoring works β†’
now 7.5

Surf

Offshore Buoy β€” San Francisco46026 Β· obs + forecast Β· NDBC / wave model
no data
Swell direction Β· every 6h
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Weather

Weather
58.8Β°Fovercast7.5 ktUV 0Sunrise 6:43 AM Β· Sunset 7:32 PM
Today, hour by hour
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Wind direction
Sat 12 AM
Sat 4 AM
Sat 8 AM
Sat 12 PM
Sat 4 PM
Sat 8 PM
TodayUV 7 HighSunrise 6:43 AMSunset 7:32 PMMoonrise 12:16 AMMoonset 4:06 PM🌘 Waning Crescentnext full moon Sep 27

Live Observations

Jul 18, 6:35 AM anon Rocks Clean Patchy 11-50% Balls Palm Hard – – A
Jul 17, 9:14 AM anon Waterline Clean Sporadic 1-10% Balls Pea Firm None – C
Jul 17, 8:37 AM anon Wrack line Clean Trace <1% Balls Coin Firm None – C
Jul 15, 5:44 PM refugio_rae Wrack line Clean Patchy 11-50% Balls – Hard None – C
Jul 15, 1:05 PM channelkeeper_kai Dry sand Black line Trace <1% Balls Coin Sticky None – C
Jul 15, 9:27 AM anon Waterline Sheen Trace <1% Balls Coin Hard – – B
Jul 13, 5:41 PM anon Wrack line Black line Trace <1% Balls Coin Sticky None – C
Jul 12, 6:12 PM anon Waterline Black line Trace <1% Balls Coin Sticky None – C
Jul 12, 4:25 PM anon Dry sand Clean Trace <1% Film – – None – B
Jul 12, 6:15 AM anon Waterline Sheen Sporadic 1-10% Balls Pea Hard – – C
Jul 11, 1:24 PM anon Dry sand Clean Trace <1% Balls Coin Sticky – – A
Jul 10, 1:57 PM mesa_lane_mary Dry sand Black line Sporadic 1-10% Balls Palm Firm None – B
Jul 10, 10:28 AM anon Waterline Clean Patchy 11-50% Balls Pea Hard None – B
Jul 10, 7:30 AM anon Wrack line Clean Trace <1% Balls Pea – – – C
Jul 8, 10:54 AM anon Waterline Clean Trace <1% Film – – – – C
Jul 6, 5:45 PM anon Dry sand Sheen Patchy 11-50% Balls Pea Hard – – A
Jul 6, 7:40 AM anon Dry sand Clean Trace <1% Film – – None – B
Jul 4, 6:52 PM ellwood_erin Waterline Clean Patchy 11-50% Balls Pea Hard None – C
Jul 3, 12:27 PM anon Wrack line Clean Patchy 11-50% Balls Pea Hard None – C
Jul 1, 11:59 AM anon Waterline Black line Trace <1% Balls Coin – – – B

16-Day Forecast

Confidence is an estimate based on forecast lead time.

Nearby Buoys

Buoy 46026 just now
Wave ht 5.3ft
Period 9s
Water temp 58.3Β°F
Station 46026 on NDBC →

Photo Gallery

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Nearby Incident Reports

May 23, 2026 NRC raw raw report β€” unverified: /// POTENTIAL RELEASE /// CALLER STATES THAT A 20' RECREATIONAL FISHING BOAT RAN AGROUND ON A REEF IN HALF MOON BAY, RESULTING IN LOCAL LIF… 5.6 km β€”
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Apr 9, 2026 NRC raw raw report β€” unverified: THE CALLER DISCOVERED A RELEASE OF MOTOR OIL INTO SAN FRANCISCO BAY FROM AN ABANDONED SAILBOAT THAT RAN AGROUND. CALLER STATES THE CAUSE OF … 23.8 km β€”
Oct 4, 2025 NRC raw raw report β€” unverified: /// POTENTIAL RELEASE /// CALLER REPORTING A BOAT CAPSIZED IN THE PACIFIC OCEAN WITH TWO INDIVIDUALS ON BOARD. THE LOCAL HARBOR ASSISTED T… 6.8 km β€”
Feb 4, 2023 IncidentNews Pleasure Craft Adrift and Sinking, Southwest of Half Moon Bay, CA 11.4 km Source β†—
May 21, 2021 IncidentNews Whale carcass; Pacifica, CA 15.9 km Source β†—
May 20, 2020 IncidentNews S/V FREEDOM adrift; South of Half Moon Bay, CA 21.1 km Source β†—
May 15, 2019 IncidentNews Gray whale carcass; Pacifica, CA 16 km Source β†—
Apr 16, 2019 IncidentNews Gray whale carcass; Pacifica, CA 94044, USA 21 km Source β†—
Oct 25, 2017 IncidentNews Tug CALEB; Half Moon Bay, CA 94019, USA 4.7 km Source β†—
May 23, 2014 IncidentNews Whale carcass; Pillar Point Harbor, CA 5.4 km Source β†—
Feb 12, 2014 IncidentNews Tarball event; Montara, CA 11.7 km Source β†—
Feb 28, 2013 IncidentNews M/V Champion Express adrift; Off Half Moon Bay, CA 22.1 km Source β†—
Apr 2, 2010 IncidentNews F/V Betty K; 7 miles west of Half Moon Bay, CA 17 km Source β†—
Jan 29, 2008 IncidentNews Mystery Tarball Incident; Pacifica, CA 9.5 km Source β†—
May 26, 2004 IncidentNews Gasoline Spill; Half Moon Bay, CA 8.5 km Source β†—
Mar 20, 2004 IncidentNews Helium release; near Halfmoon Bay, CA 6.3 km Source β†—
Jun 11, 2003 IncidentNews Unexploded Torpedo; Pillar Point Harbor, CA 22.3 km Source β†—
Mar 30, 1999 IncidentNews Fish Boat Aground; Pillar Point, California 6.3 km Source β†—