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Historical surf replay

St Ives Bay surf conditions on Sun, Aug 16, 2026

Godrevy wave and weather forecasts and weather observations, with Sevenstones offshore and Perranporth inshore wave readings. Each source keeps its own location and role so the view provides coastal context without presenting nearby buoy readings as measurements at the surf break.

Surf Day Summary

AI-generated summary. Hog Says

There were small, messy waves at Godrevy and Gwithian, with the well-aligned WNW Perranporth signal confirming surf but only low swell energy. The model’s 7.2-second primary-swell period and observed 6.1-second peak period, alongside onshore winds, pointed to weak, untidy breakers rather than powerful surf.

Generated from the completed forecast and observations shown on this page.

Day at a glance

Forecast and observations in their coastal context

Predicted at Godrevy

Last stored wave forecast

Primary swell height
0.9–2.1 ft
Primary swell period
6.8–7.6s
Primary swell direction
W 275°
well aligned with this coast
Combined sea height
1.7–3.1 ft
Combined sea period
2.8–3.8s
Combined sea direction
NW 315°

Wind mostly north-westerly

NNW 335°onshore

24 stored hourly values. This is the final stored revision, not necessarily the forecast first issued for the day.

Observed in west Cornwall

Godrevy wind and weather

Wind speed
4–12 mph

Wind veering westerly to northerly

NNW 345°onshore

24 observations. Godrevy is close enough to provide useful regional wind context for both coasts, although local effects can differ. Explore all weather readings.

Incoming Atlantic swell

Sevenstones

Significant wave height
1.3–2.6 ft
Average period
5.1–6.5s
Reported wave direction
Unavailable
Exposure unavailable

24 readings. falling height trend; medium confidence from metoffice. Open the Sevenstones archive.

Nearby north-coast inshore response

Perranporth

Significant wave height
1.3–3.3 ft
Peak period
3.6–8s
Peak wave direction
WNW 294°
well aligned with this coast

48 readings. falling height trend; high confidence from cco. Open the Perranporth archive.

How the stored wind forecast compared

Observed average wind was 3 mph lighter than the last stored forecast.

Forecast: wind mostly north-westerly; observed: wind veering westerly to northerly.

Observed wind at NNW 345° was onshore for Godrevy and Gwithian.

These sources describe different locations and exposures. Offshore and inshore buoy readings provide context for St Ives Bay; they are not measurements taken at the surf break itself. Directional labels use Godrevy and Gwithian as a representative north-west-facing swell window; individual peaks and beaches can differ.

Hour-by-hour replay

The charts share the same time axis so offshore signals, inshore readings and regional wind can be compared without treating them as the same measurement location.

Two line charts show wave height and wind speed through the selected day for St Ives Bay. The detailed table following the charts contains the same values in text form.

Swell and sea height through the day

Wind speed through the day

Metrics are rows; hours run left to right. Times use your device time zone.
Hourly forecast and observation values
Metric
Godrevy Primary swell height (ft)2.12.01.91.91.91.81.71.61.61.61.51.51.51.51.41.41.41.31.31.21.11.11.00.9
Primary swell period (s)7.67.67.57.57.47.47.47.47.37.37.37.37.27.27.17.17.07.07.07.06.96.96.96.8
Primary swell directionW 277°W 277°W 277°W 277°W 277°W 276°W 276°W 275°W 275°W 275°W 274°W 274°W 275°W 275°W 275°W 275°W 275°W 274°W 273°W 272°W 272°W 271°W 271°W 272°
Godrevy Combined sea height (ft)3.13.13.03.02.92.92.82.72.52.32.22.01.91.81.81.81.81.81.71.71.71.71.92.0
Combined sea period (s)3.63.83.73.63.53.53.43.43.33.33.23.23.13.13.03.02.92.92.92.82.92.92.92.9
Combined sea directionNNW 335°NNW 331°NNW 328°NW 325°NW 325°NNW 330°NNW 333°NNW 336°NNW 335°NNW 332°NW 326°NW 320°NW 316°NW 311°NW 305°WNW 299°WNW 295°WNW 293°WNW 294°WNW 295°WNW 297°WNW 298°WNW 297°WNW 296°
Godrevy forecast weather (3-hourly)
Godrevy forecast wind (mph)13N13N13N13N14N13N13N13N12N12NNW12NNW11NNW10NNW10NNW10NNW11NW12NW12NW12NW12NW12NW12NW12NW12NW
Observed weather
Observed wind (mph)11N10N9N10N10N12N9N10N10N11N11N10N8N9N9N10N9NW11NW11NW9NNW6NW5NW4W4SSW
Sevenstones Significant wave height (ft)2.62.62.32.32.62.32.32.62.32.02.32.02.02.01.61.61.61.62.01.31.31.31.31.3
Sevenstones Observed wave period (s)5.66.16.36.16.16.46.36.55.95.85.15.65.45.85.85.85.76.06.55.96.05.55.65.5
Sevenstones Observed wave directionUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailable
Perranporth Significant wave height (ft)2.92.52.62.92.93.23.03.22.92.42.41.71.71.41.61.71.72.12.32.11.91.81.71.7
Perranporth Observed wave period (s)5.17.75.05.14.94.95.15.04.74.37.47.47.17.46.77.48.04.03.66.98.07.48.04.1
Perranporth Observed wave directionNNW 335°W 277°NNW 329°NW 309°NNW 336°NNW 329°NW 318°NW 321°NNW 330°NNW 347°W 276°W 273°W 276°W 281°W 269°W 274°W 270°WNW 295°WNW 301°W 269°W 270°W 269°WNW 283°NW 311°

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