Wind guide

How do I read a coastal wind forecast?

Wind is not one number. Read its strength, gusts, direction and timing together with the shape of the coast you plan to use.

Quick answerStart with sustained wind, then check gusts and direction for the exact launch, entry and return points. A matched Seyva window means the available data met a cautious product setting; it does not describe every local effect or every person’s limits.

What sustained wind tells you

Sustained wind is an average over a forecast period. It helps describe the broad pattern, but it can smooth out short stronger bursts. Look at the hourly view and allow for the forecast to be different from what you experience at the water.

Why gusts and direction matter

Gusts can make balance, breathing and the return leg harder. An offshore direction can carry a paddleboard away from land, while an onshore or cross-shore direction can create chop or change the easiest way back. The same compass direction can behave differently on two beaches facing different ways.

Read the coast, not just the town name

Headlands, bays, cliffs, piers, harbour walls and buildings can alter exposure over short distances. Use the location page as a starting point, then identify the exact access point and compare the forecast with the water you can see.

Before you go

  • Check the full period from launch or entry until you expect to return.
  • Compare sustained wind and gusts rather than relying on the headline value.
  • Translate the direction for the exact shoreline and route.
  • Look for increasing chop, white water or blowing spray when you arrive.
  • Shorten or change the plan when the observed water differs from the forecast.
Written and reviewed by Ollie BartlettFounder of Seyva and a sea swimmer and paddleboarder based near Worthing. Reviewed 16 September 2026. Seyva is a planning aid, not professional safety advice.