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Surfing Swell Decoder

Decode complex surf conditions into simple recommendations. Analyzes swell height, period, wind, and tides to tell you if it's worth paddling out.

Free — no signupSwell analysisWind impactWave qualityGo/No-Go verdict

Surfing Swell Decoder

Should you go surfing today?

Enter a surf spot to decode complex buoy data into a simple answer. We analyze swell, wind, and tides to tell you if it's worth paddling out.

Find Your Surf Spot

About Swell Decoding

This tool analyzes swell height, period, direction, and wind conditions to give you a simple surf forecast. Longer swell periods (12s+) generally mean better wave quality. Offshore winds clean up the waves, while onshore winds create choppy conditions.

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Surfing Swell Decoder is free and always will be — no account needed. Leave an email and we'll tell you when the next one ships.

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