Ocean Beach — Sloat surf report and forecast
Forecast for the selected hour
Now · 3pm
7–9 ft · sets to 11
Poor-FairBest available today 4–7pm
Wind and the tide hold it back.
The wave field solved for this hour on the real seafloor, playing forward. A model, not a camera.
Loads when it comes into view.The wave field solved for this hour on the real seafloor, playing forward. A model, not a camera.
This hour
The 3pm readingSwell, wind, tide, breaker, energy, water
- Swell7.0 ft · 12 s · WMakes the wave: 87% of the energy. Direction at the break.
- 1.9 ft · 17 s · SWSecondary: 7% of the energy. Direction at the break.
- 1.8 ft · 5 s · WSecondary: 6% of the energy. Direction at the break.
- Wind15 mph from the WOnshore to a shoreline facing 264°Strong
- Tide4.2 ft, risingNext high 4.8 ft at 5:21pm · NAVD88, NOAA 9414290 observed
- BreakerSpillingBreaks in about 14 ft of water
- Energy715 kJHeight² × period²Punchy
- Water60° · air 59° · UV 3
High confidence.
Best window4–7pm
No strong window today. Onshore wind all day; lightest 11am–12pm.
Against what Ocean Beach — Sloat likesWhy it is Poor-Fair, not Fair
Preferred tide and swell are surfer-consensus notes for this spot, not yet reviewed against measurements. Wind is judged by the general rule (light or offshore helps). No percent match: these are plain states and reasons.
Nearby at 3pmOcean Beach, Ocean Beach — Kelly's Cove and 3 more
The break
The seafloorSand (seasonal bars), open and heavy
Shallow is light, deep is dark; contours every few feet; the relief is exaggerated.
- Bottomsand (seasonal bars), open and heavy
- DepthCUDEM 1/9 arc-second (2022), relative to NAVD88. Depth shown is below the selected hour’s tide.
- CoverageRock reef and headland shapes resolve well. Nearshore sandbars are interpolated flat in this dataset, so a beachbreak’s bar is not in the picture. A tile’s year is its publication, not the survey date.
Why it breaks like this3 swells at once, the seafloor is neutral here, where it trips
Read from the current hour (today at 3pm). Each number, and what it does to the wave.
3 swells at once
7.0 ft at 12s from the W carrying 87% of the energy, plus 1.9 ft at 17s from the SW (7%), plus 1.8 ft at 5s from the W (6%).
The shorter, steeper train is carrying most of the energy here, so expect a choppier, less organised lineup than the longest period in the list would suggest on its own. Why period matters more than height
The seafloor is neutral here
Kr 0.94 · 90% of modelled rays break.
Energy arrives roughly as it left deep water: this bottom neither concentrates the swell nor fans it out, so what the buoy sees is close to what you get. Why two breaks a mile apart differ
Where it trips
4.2 ft of tide; waves are breaking in about 14 ft of water.
A wave breaks when the water gets shallow enough relative to its height, so that depth is a contour on the seafloor, and the tide slides the whole break up and down it through the day. Same swell, different spot, a few hours apart. How the tide moves the break
Wind is onshore
15 mph from the W, against a shoreline facing 264°.
Pushing into the back of the wave from the sea, making it crumble and break early instead of standing up. Note this is measured against the angle THIS break faces, which is why one spot can be blown out while the one round the headland is fine.
How the sets come
About one set every 1 min, roughly 4 waves in it.
Swell arrives in groups, not evenly. That spacing is what you are really timing your paddle-out to, and it's why the lineup can look flat for minutes and then produce five waves at once.
How Ocean Beach — Sloat worksStraight into the swell window with no shelter
Straight into the swell window with no shelter — long paddle, thick peaks, serious currents. Big-day OB.
- Best tidemedium
- Best swellW–NW groundswell
- Suitsadvanced
3 swell trains in the current hour · How this is calculated
Common questions4 questions about Ocean Beach — Sloat
- What is the best tide for Ocean Beach — Sloat?
- Ocean Beach — Sloat works best on medium tide. Tide matters because depth is what trips a wave: as the water fills in, the break slides shoreward onto a different part of the bottom, and over a shallow bank enough water stops it breaking at all. Our forecast solves each hour at that hour's real water level rather than assuming one.
- What swell direction is best for Ocean Beach — Sloat?
- W–NW groundswell suits Ocean Beach — Sloat best. The direction that matters is the one at the break, not the one on the buoy: the seafloor bends swell on its way in, so a spot can work on an angle the open coast is missing. We model that bending for each break rather than reporting the offshore direction.
- Is Ocean Beach — Sloat good for beginners?
- Ocean Beach — Sloat suits advanced surfers, over sand. That is the wave this bottom makes on an average day, and it moves: the same break is a different proposition on a bigger swell or a different tide, so read the day's forecast rather than the label.
- What is the bottom like at Ocean Beach — Sloat?
- sand (seasonal bars), open and heavy. It is the reason this break behaves the way it does: the shape of the seabed decides where the swell focuses, where it trips, and whether it spills or pitches. We model Ocean Beach — Sloat on real 10-foot bathymetry instead of treating the seafloor as a slope.