See real measurements of wind and sea conditions from boats around you.

It's way more accurate than satellite weather forecasts.

Get wind zones on your smartphone.


We've been crowdsourcing wind data since 2015.

Here's a snippet of our wind models based on real-time and archived data:

Our customers choose to send us their wind data.

We use that data to make real-time wind maps based on people around you.

We put that wind data into an archive that we use to make very accurate wind models.

It's kind of unbelievable, but it's real.

How do we do it?

The SailTimer Wind Instrument and a NMEA data transmission tool called the Air Link.

The Wind Instrument


More than an anemometer or wind vane, the SailTimer Wind InstrumentTM is specifically designed for sailboats, and can measure wind speed, wind direction, apparent wind angle, and true wind angle. This device wirelessly connects to your phone or tablet, and the free SailTimer chartplotter app.

‍This wireless and solar-powered device is the only wind sensor that can accurately measure wind when a boat heels, and the only wind speed and direction measurement tool that works on a rotating mast. 

Shop for the Wind Instrument

We're compatible with your tech.

Want to use our wind sensor with your chartplotter? No problem.

Want to send your wind data from your alternative sensor to our app? No problem.

Want to send us wind data from your tech, and get wind maps in your chartplotter? No problem.

We'd love to hear about your navigation set up!