TonnrLearn to read a forecast.
Three guides, from a first look at a forecast to an alert made of your own sessions, with a demo to play with in every lesson.
- Beginner
How to read a surf forecast: the basics
A forecast comes down to five figures: the height of the waves, their period, where the swell comes from, the wind and the tide. Five lessons, one demo each. Ten minutes before your first session.
- Height
- Period
- Where the swell comes from
- Wind
- Tide
- Intermediate
Reading a week of forecasts and finding the right window
You surf already and want to pick your day. Swell and wind sea, energy, fetch, a week read at a glance, and why two spots a few kilometres apart do not work on the same day.
- Swell and wind sea
- Energy
- Fetch
- Reading a week
- Two neighbouring spots
- Advanced
Models, buoys and secondary swells: reading a forecast in depth
What the figures are made of: the models and their resolution, the gap between a buoy and a model, swells that overlap, the shadow of an island, and an alert drawn from your sessions.
- The models and their resolution
- Buoy against model
- Secondary swells
- Shadow and refraction
- An alert drawn from your sessions
Surf and swell glossary
Every word the guides use: what it means, and where the thing comes from.