Kaikoura Coast · Right now

Mangamaunu

Updated Wed, Sep 23, 12:30 PM GMT+12

When to go

Around 1:00 PM

Looks good · Low confidence

5.4–5.4 ft · Offshore waves · not face height

Wind: 7.0 kt · offshore

Forecast details

Wind blowing out to sea should help the waves stay clean.

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.

1:00 PM–3:00 PM · Pacific/Auckland
Strong wind · up to 7.5 kt · reported gusts up to 21.2 kt
Caution: This is the best available wind comparison, not a favorable-wind label. Strong wind remains in the selected evidence.
Offshore waves: 5.3–5.4 ft across the period. Surf height unavailable. Tide data unavailable.
Wind source time: Sep 23, 11:45 AM GMT+12. 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 8.0 km from the mapped spot. Provider grid resolution is not established for this response.
Reference model hour: 0 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 WSW 7 kt

Tide Unavailable

Wave, wind and tide details

Offshore model swellS 4.5 ft @ 7sValid 2026-09-23 13:00 · Pacific/AucklandMarine grid -42.3750, 173.7084 · offshore model, not a local measurement

Offshore model sea5.4 ft @ 8.0sSignificant wave height including wind waves and swell; not breaking surfValid 2026-09-23 13:00 · Pacific/Auckland

Model windWSW 7 ktoffshoreValid 2026-09-23 13:00 · Pacific/Auckland6.1 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 Mangamaunu
Time	Wind	Tide	Offshore swell
Noon	SSW 7.1 ktcross-shore	Unavailableunavailable	S 4.6 ft @ 8s
1 PM	WSW 7 ktoffshore	Unavailableunavailable	S 4.5 ft @ 7s
2 PM	SW 7.5 ktcross-shore	Unavailableunavailable	S 4.4 ft @ 6s
3 PM	WSW 7 ktoffshore	Unavailableunavailable	S 4.3 ft @ 6s

NoonUnavailable

WindSSW 7.1 ktcross-shoreTideUnavailableunavailableOffshore swellS 4.6 ft @ 8s

1 PMUnavailable

WindWSW 7 ktoffshoreTideUnavailableunavailableOffshore swellS 4.5 ft @ 7s

2 PMUnavailable

WindSW 7.5 ktcross-shoreTideUnavailableunavailableOffshore swellS 4.4 ft @ 6s

3 PMUnavailable

WindWSW 7 ktoffshoreTideUnavailableunavailableOffshore swellS 4.3 ft @ 6s

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. Point break. Published named-break coordinate; the source describes southeast swell and west offshore wind.

Mapped spot coordinate: -42.31, 173.75.

South Island · Kaikoura Pacific east-facing exposed point coast · Ocean-facing bearing 90° · Location provenance

Model request point: Mangamaunu (-42.31, 173.75). 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 B · NEW_ZEALAND · spot-level model point

MetService New Zealand Surf Forecasts
The checked MetService public marine/surf response exposes an HTML application shell but no stable named-spot payload, timestamp schema, units, or update contract; no forecast is scraped.UnavailableNo source time
New Zealand Regional Wave Buoy Pages
South Island Waves identifies a Kaikoura buoy, but its checked public list and buoy-data response were empty. The Banks Peninsula buoy is 150+ km south and is not substituted for Mangamaunu.UnavailableNo source time
NIWA Tide Forecasting API
NIWA tide requests require an API key; no credential bypass is attempted and no station, datum, timezone, or current value is available.UnavailableNo source time
LINZ Tide Predictions and Sea-Level Data
LINZ is retained as an official tide-table reference, but no spot-specific station, distance, chart datum, timezone, and current response is connected.UnavailableNo source time
Open-Meteo Marine API
1 of 1 configured model points availableCurrentSep 23, 11:45 AM GMT+12
Open-Meteo Weather API
1 of 1 configured model points availableCurrentSep 23, 11:45 AM GMT+12
Surf-Forecast public pages
Spot discovery and break-specific HTML fallbackNot applicableNo source time
Surfline public spot pages
Break-specific comparison, cams, and metadataNot 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.