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Historical surf replay

St Ives Bay surf conditions on Sun, Aug 23, 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 little, clean waves at Godrevy and Gwithian: the west swell was well aligned, but observations and the model showed short, weak periods and minimal swell energy (0.43 kW/m), limiting surf size. Cross-offshore winds around 5 mph kept conditions tidy rather than messy.

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
0.9–1.8 ft
Primary swell period
5.1–10.9s
Primary swell direction
W 279°
well aligned with this coast
Combined sea height
1.5–2.2 ft
Combined sea period
2.7–3.4s
Combined sea direction
NNW 332°

Wind mostly north-easterly

ENE 64°cross-offshore

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
5–13 mph

Wind mostly easterly

ENE 74°cross-offshore

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
1.6–3 ft
Average period
4.9–5.7s
Reported wave direction
Unavailable
Exposure unavailable

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

Nearby north-coast inshore response

Perranporth

Significant wave height
1–3 ft
Peak period
3.5–5.4s
Peak wave direction
NNW 335°
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 1 mph lighter than the last stored forecast.

Forecast: wind mostly north-easterly; observed: wind mostly easterly.

Observed wind at ENE 74° was cross-offshore 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)1.10.90.91.01.00.90.90.91.21.51.81.51.20.91.01.11.21.21.21.21.21.21.21.2
Primary swell period (s)8.78.68.68.68.68.78.88.87.66.35.06.58.19.69.69.79.810.110.510.810.19.38.69.0
Primary swell directionW 279°W 275°W 276°W 276°W 276°W 275°W 275°W 275°WNW 303°NNW 332°N 1°NNW 331°WNW 302°W 272°W 272°W 271°W 270°W 266°W 261°WSW 256°WSW 258°W 261°W 263°W 260°
Godrevy Combined sea height (ft)2.22.22.22.22.12.02.01.91.91.81.81.81.71.71.61.61.61.61.61.61.61.51.51.5
Combined sea period (s)3.13.43.33.23.13.13.13.03.13.13.13.23.23.33.23.13.03.02.92.82.82.82.72.7
Combined sea directionNNW 342°NNW 344°NNW 346°NNW 347°NNW 347°NNW 347°NNW 346°NNW 345°NNW 343°NNW 341°NNW 340°NNW 338°NNW 335°NNW 332°NNW 329°NW 325°NW 321°NW 320°NW 318°NW 316°NW 312°NW 310°NW 309°NW 309°
Godrevy forecast weather (3-hourly)
Godrevy forecast wind (mph)11NE11NE11NE10NE10NE10NE10NE10NE9NE8ENE8ENE7ENE7ENE6E7ENE8ENE9ENE9ENE10ENE10ENE10ENE10ENE10ENE10ENE
Observed weather
Observed wind (mph)6NE6NE6NE7NE7NE7ENE6NE5NE5NE6NE8E9E10SE10E13SE13ESE12E13ESE13ESE11ESE9E5ENE6NE8NE
Sevenstones Significant wave height (ft)2.62.32.31.62.02.02.02.02.02.02.02.02.02.32.02.02.02.32.62.63.02.62.62.6
Sevenstones Observed wave period (s)5.35.15.35.25.45.25.35.35.45.25.35.15.25.35.75.45.25.24.95.25.14.95.35.1
Sevenstones Observed wave directionUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailableUnavailable
Perranporth Significant wave height (ft)2.82.72.72.72.92.72.42.21.91.81.71.71.71.71.71.81.81.71.61.41.31.21.21.1
Perranporth Observed wave period (s)4.95.15.15.15.05.15.44.74.44.44.94.44.54.44.94.94.43.54.43.94.14.33.93.9
Perranporth Observed wave directionNNW 332°NNW 332°NNW 342°NNW 340°NNW 336°NNW 333°NW 318°NNW 339°NNW 328°NNW 335°NW 326°NNW 340°NNW 339°NW 314°NNW 345°NNW 329°NNW 330°NNW 331°NNW 329°N 353°N 350°NW 322°NNW 339°N 352°

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