This chart only shows swells likely to create some kind of ridable wave on the beach. Note the lack of North Sea buoys will mean potentially good sessions going unreported.
About
This chart shows current swell quality for the UK and surrounding waters. The data is grabbed from the NDBC Buoys every few minutes, the image then updated every quarter of an hour. You can expect the actual data to be about an hour old. The calculation factors swell height and period together, with a greater emphasis on period.
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