Telltale · Sailing weather, racing and logs

Forecasts that keep up.
Debriefs that make you faster.

Live readings correct the forecast as you look. After the sail, see where you gained and lost against your polar and the fleet.

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Sailing forecasts that keep up

Every model corrected by the latest station and buoy measurements, with tides and currents. How forecasts are corrected

Routes from your polar, the forecast, tides and currents, and the best time to leave. Weather routing guide · Passage planning

A plan for every leg, races near you, and a start timer in step with your B&G H5000, with line bias on the chart. Racing guide · Races near you

Live wind, boat speed and depth from NMEA 0183, NMEA 2000, Signal K or B&G, with laylines and the AIS fleet. Instruments onboard · Connect your instruments

Record every sail, then see where you gained and lost against your polar and the fleet. Watch a sail · Recording and review guide

Wind, speed, depth and your start timer on your wrist. Apple Watch · Garmin

Yes. Telltale is free on iPhone, Apple Watch, Android, Garmin and the web, and a free account supports two boats. Make an account and get 3 months of Pro free.

Telltale checks every model against the latest readings from marine stations and buoys, nudges the forecast toward what they measure, and fades that correction over the next few hours. It also marks the model that has matched the nearby stations best over the last few hours.