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← Central and South Chile report

Central and South Chile · Wednesday, Sep 23

Matanzas

When to go

11:00 AM–1:00 PM

Looks good · Low confidence

2.8–2.9 ft · Offshore waves · not face height

Wind: 1.8 kt · direction unavailable

Forecast details
  • Light wind should keep the water smoother.
Other wind windows

Plan around the wind

The best available upcoming daylight wind sample to compare with the wave evidence. This compares wind only; wave size, tide suitability, and hazards can change your choice.

  • 10:00 AM–12:00 PM · America/Santiago

    Light wind · up to 1.6 kt · reported gusts up to 5.2 kt

    Offshore waves: 2.8–2.9 ft across the period. Surf height unavailable. Tide data unavailable.

    Wind source time: Sep 22, 8:30 PM GMT-3. This is not the model run issue time.
How these periods are chosen

The planner prefers three consecutive hourly samples covering two daylight hours, but retains shorter one- or two-sample evidence when that is all the forecast provides. Light wind means at most 6 kt. Moderate offshore means at most 12 kt from land toward the sea when shore orientation is verified. Strong wind or known gusts of 20 kt or more remain visible as cautions instead of making the entire comparison disappear. These are comparison labels, not locally tested surf-quality or safety ratings. Missing gusts remain unknown. Terrain shelter, currents, closures, and your ability are not assessed.

Forecast confidence
  • Returned marine grid point is 5.3 km from the mapped spot. Provider grid resolution is not established for this response.
  • Reference model hour: 11 hours from now; historical residuals do not measure forecast lead-time error.
  • No accepted local model for these inputs: missing history, unsupported direction/period/height, or failed historical validation.
  • Tide unavailable: assessment incomplete, especially at shallow reef breaks.
  • A mapped coordinate does not establish nearshore grid resolution or terrain/shelter accuracy.

Wind SSE 1.4 kt

Tide Unavailable

Wave, wind and tide details
Offshore model swellWSW 2.5 ft @ 5sValid 2026-09-23 08:00 · America/SantiagoMarine grid -33.9583, -71.9583 · offshore model, not a local measurement
Offshore model sea3.1 ft @ 8.4sSignificant wave height including wind waves and swell; not breaking surfValid 2026-09-23 08:00 · America/Santiago
Model windSSE 1.4 ktcross-shoreValid 2026-09-23 08:00 · America/Santiago0.6 kt offshore component
TideUnavailableunavailableNo verified local tide station connected; no tide height estimated

Surf height unavailable. Coastal and offshore waves are not breaking-wave heights.

Surf and wind

Recommended window: No recommended window

Breaking surf is not reliably resolved. Hourly offshore swell and wind inputs are listed below.

Hourly forecast

Hourly surf forecast for Matanzas
TimeWindTideOffshore swell
SSW 4.4 ktcross-shoreUnavailableunavailableWSW 2.4 ft @ 9s
S 3 ktcross-shoreUnavailableunavailableWSW 2.4 ft @ 8s
SW 4.4 ktcross-shoreUnavailableunavailableWSW 2.5 ft @ 8s
S 2.8 ktcross-shoreUnavailableunavailableWSW 2.6 ft @ 7s
SE 3.3 ktoffshoreUnavailableunavailableWSW 2.6 ft @ 6s
SE 2.4 ktoffshoreUnavailableunavailableWSW 2.7 ft @ 6s
SE 1.8 ktoffshoreUnavailableunavailableWSW 2.8 ft @ 6s
ESE 2.1 ktoffshoreUnavailableunavailableWSW 2.6 ft @ 5s
SSE 1.4 ktcross-shoreUnavailableunavailableWSW 2.5 ft @ 5s
SSW 2.4 ktcross-shoreUnavailableunavailableWSW 2.4 ft @ 5s
S 1.6 ktcross-shoreUnavailableunavailableWSW 2.3 ft @ 6s
W 0.4 ktonshoreUnavailableunavailableWSW 2.2 ft @ 6s
NNW 0.9 ktcross-shoreUnavailableunavailableWSW 2.2 ft @ 6s
W 1.8 ktonshoreUnavailableunavailableWSW 2.4 ft @ 7s
W 4.3 ktonshoreUnavailableunavailableWSW 2.6 ft @ 8s
WSW 7.6 ktonshoreUnavailableunavailableWSW 2.9 ft @ 8s
WSW 8.2 ktonshoreUnavailableunavailableWSW 3.0 ft @ 8s
SW 8.5 ktonshoreUnavailableunavailableWSW 3.1 ft @ 8s
SW 4.7 ktonshoreUnavailableunavailableWSW 3.1 ft @ 8s
W 2.3 ktonshoreUnavailableunavailableWSW 3.2 ft @ 8s
W 1.4 ktonshoreUnavailableunavailableWSW 3.3 ft @ 8s
WSW 2.7 ktonshoreUnavailableunavailableWSW 3.4 ft @ 8s
WSW 2.6 ktonshoreUnavailableunavailableWSW 3.5 ft @ 8s
SW 2.8 ktonshoreUnavailableunavailableWSW 3.6 ft @ 8s
Unavailable
WindSSW 4.4 ktcross-shoreTideUnavailableunavailableOffshore swellWSW 2.4 ft @ 9s
Unavailable
WindS 3 ktcross-shoreTideUnavailableunavailableOffshore swellWSW 2.4 ft @ 8s
Unavailable
WindSW 4.4 ktcross-shoreTideUnavailableunavailableOffshore swellWSW 2.5 ft @ 8s
Unavailable
WindS 2.8 ktcross-shoreTideUnavailableunavailableOffshore swellWSW 2.6 ft @ 7s
Unavailable
WindSE 3.3 ktoffshoreTideUnavailableunavailableOffshore swellWSW 2.6 ft @ 6s
Unavailable
WindSE 2.4 ktoffshoreTideUnavailableunavailableOffshore swellWSW 2.7 ft @ 6s
Unavailable
WindSE 1.8 ktoffshoreTideUnavailableunavailableOffshore swellWSW 2.8 ft @ 6s
Unavailable
WindESE 2.1 ktoffshoreTideUnavailableunavailableOffshore swellWSW 2.6 ft @ 5s
Unavailable
WindSSE 1.4 ktcross-shoreTideUnavailableunavailableOffshore swellWSW 2.5 ft @ 5s
Unavailable
WindSSW 2.4 ktcross-shoreTideUnavailableunavailableOffshore swellWSW 2.4 ft @ 5s
Unavailable
WindS 1.6 ktcross-shoreTideUnavailableunavailableOffshore swellWSW 2.3 ft @ 6s
Unavailable
WindW 0.4 ktonshoreTideUnavailableunavailableOffshore swellWSW 2.2 ft @ 6s
Unavailable
WindNNW 0.9 ktcross-shoreTideUnavailableunavailableOffshore swellWSW 2.2 ft @ 6s
Unavailable
WindW 1.8 ktonshoreTideUnavailableunavailableOffshore swellWSW 2.4 ft @ 7s
Unavailable
WindW 4.3 ktonshoreTideUnavailableunavailableOffshore swellWSW 2.6 ft @ 8s
Unavailable
WindWSW 7.6 ktonshoreTideUnavailableunavailableOffshore swellWSW 2.9 ft @ 8s
Unavailable
WindWSW 8.2 ktonshoreTideUnavailableunavailableOffshore swellWSW 3.0 ft @ 8s
Unavailable
WindSW 8.5 ktonshoreTideUnavailableunavailableOffshore swellWSW 3.1 ft @ 8s
Unavailable
WindSW 4.7 ktonshoreTideUnavailableunavailableOffshore swellWSW 3.1 ft @ 8s
Unavailable
WindW 2.3 ktonshoreTideUnavailableunavailableOffshore swellWSW 3.2 ft @ 8s
Unavailable
WindW 1.4 ktonshoreTideUnavailableunavailableOffshore swellWSW 3.3 ft @ 8s
Unavailable
WindWSW 2.7 ktonshoreTideUnavailableunavailableOffshore swellWSW 3.4 ft @ 8s
Unavailable
WindWSW 2.6 ktonshoreTideUnavailableunavailableOffshore swellWSW 3.5 ft @ 8s
Unavailable
WindSW 2.8 ktonshoreTideUnavailableunavailableOffshore swellWSW 3.6 ft @ 8s

Tide

Local tide station unavailable

Tide predictions are unavailable for this period.

About this spot

Model-grid forecast requested at the mapped coordinate; reef, headland, and nearshore transformations are unresolved. Reef break. Matanzas named-break page reports southwest swell and east offshore wind; orientation reviewed at 270 degrees.

Mapped spot coordinate: -33.9592, -71.9006.

Mainland South America · O'Higgins mainland west-facing Pacific reef coast · Ocean-facing bearing 270° · Location provenance

Model request point: Matanzas (-33.9592, -71.9006). Model output times describe valid conditions; the provider does not expose the model run issue time in this response.

Forecast sources

Data coverage 2/6 sources

Source availability is not forecast accuracy. Where an empirical model passes historical testing, its error and interval coverage are shown above. Source count cannot increase that confidence.

Coverage tier C · CHILE · spot-level model point

  • Chile DIRECTEMAR/SHOA Marine Data
    No current DIRECTEMAR forecast passed title, validity, zone, metre-range, and timestamp validation; no wave observation or tide is inferred from the forecast feed.    UnavailableNo source time
  • The Buoy API
    No current same-exposure Chilean wave observation with verified station identity, coordinates, units, and timestamp is connected.    UnavailableNo source time
  • WorldTides API
    No tide source with verified station identity, distance, datum, timezone, and current response is connected.    UnavailableNo source time
  • Open-Meteo Marine API
    1 of 1 configured model points available    Current
  • Open-Meteo Weather API
    1 of 1 configured model points available    Current
  • Copernicus Marine Global Ocean Waves
    Copernicus Marine requires an account/toolbox workflow and no independently connected response is available.    UnavailableNo source time
  • Surf-Forecast public pages
    Spot discovery and break-specific HTML fallback    Not applicableNo source time
  • Surfline public spot pages
    Break-specific comparison, cams, and metadata    Not applicableNo source time
How best guesses are made

Best guesses combine usable wave and wind evidence, with qualitative confidence and specific limitations. A missing tide or local surf-height model does not prevent useful guidance. Tide levels use the named station datum; their effect at this break remains uncertain. Wind direction is relative to the mapped beach orientation, without calibrated terrain or shelter effects. The comparison is a heuristic, not a measured quality rating.