How to Read the Swell
Learn what swell height, period, and direction mean — and how they shape your next session.
Start lessonSwellOracle Academy
Learn the language of the ocean.
The ocean is already talking. SwellOracle helps you understand what it means before you paddle out.
Beginner
What Is Swell Period?
Why 10 seconds, 14 seconds, and 17 seconds can mean completely different surf.
Start lessonOffshore vs Onshore Wind
Understand why wind can make or ruin the same swell.
Coming soonIntermediate
How to Read a Surf Buoy
Learn how to read buoy data in less than one minute.
Coming soonWhy Forecasts Are Often Wrong
Models, wind shifts, bathymetry, and why no forecast is perfect.
Coming soonAdvanced
Reading Multiple Buoys
Learn how experienced surfers track swell as it moves across the ocean.
Coming soonGlobal examples
Learn with buoys from around the world
Open physical stations by region to practice reading source, location, height, period, direction and observation age. When a recent reading is unavailable, the page says so without inventing values.
North America
Latin America
Europe and the Mediterranean
Asia and the Pacific
Australia
Practical takeaway
Start with one lesson, then use the live app to compare what you learned with today's ocean.