Windfinder, Windy.com, Surfline and Windy.app compared — swell period, cross-checked wind models and live cams before you drive to the break.
A surf forecast can promise head-high waves and deliver a lake, because the morning depends on three numbers that move independently: swell size and period, wind direction, and the state of the tide at the spot. No single app is always right — every weather model has its biases — which is why regulars cross-check two sources before committing to a dawn drive. This guide compares the forecast apps worth having for surfing and wind sports in 2026, with Windfinder and Windy.com reviewed in depth and the questions sorting out the Surfline and Windy.app confusion.
Windfinder gives trusted hour-by-hour wind forecasts for thousands of coastal spots from real station data, with the most generous free tier of the group.
It is the default tool of windsurfers, kitesurfers and sailors: spot-by-spot forecasts through the day that blend actual weather-station readings with model data, across thousands of coastal locations. The emphasis sits firmly on wind rather than swell, and there are no live cameras, so a surfer chasing wave detail pairs it with something else; the extended forecast horizon is also paid. What it gives away free is notably more generous than Surfline's tier, which makes it the everyday check for anyone whose sport depends on what the air is doing.
Windy.com is the visual model-comparison tool — animated wind, rain and wave maps with ECMWF and GFS switchable side by side.
It exists for users who want the actual weather picture rather than a single summary number: animated maps of wind, rain, waves and temperature with several forecast models, including ECMWF and GFS, comparable on screen so you can see where the models agree and where they diverge. Surfers use it for wind direction at the coast, and it is equally a reference for sailors, drone pilots and mountaineers. Casual users will find it overkill and slow to learn if they only want rain or shine, and some advanced layers sit behind payment.
Pros
Animated wind, rain and wave maps
Switch between forecast models
Reference tool for outdoor sports
Cons
Overkill for a simple rain check
Takes time to get to grips with
Some advanced layers are paid
Download price only. In-app purchases and subscriptions may cost extra.
Questions & answers
Are Windy.com and Windy.app the same company?
No — it is the most common mix-up in the category. Two separate companies chose almost identical names: Windy.com is the Czech viewer known for animated weather maps, while Windy.app is built around wind and water sports. Both are good; just know which one you are installing.
Why do forecasts differ between apps?
Because they run different weather models, each with its own biases — chiefly the European ECMWF and the American GFS. The practical move is not to hunt for one infallible app but to compare two models: agreement means high confidence, while a sharp divergence means the forecast is shaky and waiting costs nothing.
Which numbers actually matter for surfing?
Wave height gets checked first but is not the most decisive figure. Swell period — the seconds between waves — signals energy, and a longer period makes more powerful waves at the same height. Wind then decides quality: offshore wind blowing from land to sea keeps the face clean, while onshore wind turns it messy.
Is a Surfline subscription worth paying for?
If you surf regularly where its cameras exist, yes: watching the break live saves wasted drives. Coverage is densest in the United States and Australia and thin elsewhere, so check your usual spots first. For wind specifically, free Windfinder covers more ground than paid Surfline.
More related apps
App library · United States App Store. Prices and availability reflect the last check.
