The best sailing today

Every 3 hours when the conditions cron runs. We pull fresh wind, wave, and weather data for every venue and recalculate both boat category scores.

Club Dinghy scoring is optimised for boats like the Laser, RS200, and Wayfarer. These peak at 14-16 knots and are penalised more heavily by strong gusts. High Performance scoring suits boats like the 49er, Moth, and RS800. These want 18-20 knots and tolerate a wider wind range.

Wind viability gates everything: sustained wind is matched to each boat category's ideal range and multiplies the rest of the score, so a becalmed day scores near zero however sunny it is. Gust stability and visibility also multiply, while sea state, precipitation, storm risk, wind consistency, and pressure trend form a weighted composite. The day's score is 70% the best 4-hour window across racing hours (09:00-18:00) plus 30% the racing-hours average.

Treat it as provisional. The pressure trend, shown in hPa per hour, still counts towards the quality composite, but it has not yet been validated against real sailing outcomes.

Becalmed is the lowest label. Below roughly 4 knots the wind viability gate takes the score to 2 or less, because there is simply no sailing to be had, however pleasant the weather. A day can also score low because the wind is too strong. Those days carry a Strong wind or Too windy safety flag, so check the flags before reading a low score as light wind.

Scores are never suppressed. Safety flags sit beside the score instead. Club dinghies get a Strong wind flag from 20 knots sustained or 25 knot gusts, and a Too windy flag from 25 knots or 30 knot gusts. High performance boats get them from 22 knots or 27 knot gusts, and from 27 knots or 32 knot gusts. Thunderstorms and visibility below 500m are red flags, while visibility below 1km, an unstable atmosphere and cold rain are amber. Gust volatility is only flagged once the sustained wind reaches 6 knots, so drifting conditions are not mistaken for squalls. When the wind, storm or visibility forecast is missing, the flag reads unavailable rather than clear, even beside an unstable atmosphere. Cold rain is only flagged when both the feels-like temperature and the rainfall are known.

Inland venues skip the sea state sub-factor and score near-perfect there. Coastal venues face wave penalties, swell steepness checks, and wind-against-tide effects. The leaderboard is intentionally global, so both types compete on the same scale.

Open-Meteo Weather API for wind, temperature, pressure, and visibility. Open-Meteo Marine API for wave and swell data at coastal venues. The same underlying models power many sailing forecast apps.