Headwind Lab
Know when it's a good time to go.
Tides, currents and wind on one chart, so you see if the ebb and the breeze line up. WindWaterSail marks the good windows at your spot and tells you when one is coming.
- Good time to go alerts for your spot
- You decide what counts as good: wind, gear and more
- NOAA tides and currents with wind on one chart
Why it's different
Currents, not just wind
Most wind apps ignore the water. Here the current and the wind share one chart.
Built for your spot
Launch spots, live cams and conditions scored against what works at that spot, not a generic wind number.
Your rules
A good day on a foil isn't a good day on a big kite. You set what counts.
Alerts when it's on
Get a notification up to three days ahead when a good time to go is coming at your favorite spots.
You decide what's good
Set the lightest wind you'll bother with and the gear you ride. 13 knots on a foil is not 13 knots on a small kite.
Live cams
Check the live Crissy Field cams before you load the car.
Everything else
Good time to go, at a glance
The good windows at your spot are marked right on the chart, so you see when the ebb and the breeze line up.
One chart, one cursor
The tide or current curve with wind right under it. Drag across and both move together.
Every NOAA station
Roughly 3,500 tide stations and 4,400 current stations across the US, plus 280+ launch spots on the map.
Marine forecast up top
The National Weather Service coastal waters forecast for your zone, with small craft advisories first.
On your wrist
Apple Watch app and widgets.
Made for iPhone Duo
Two screens, side by side.
On iPhone Duo, the map of launch spots sits on one side and the tide, current and wind chart on the other.
Open
Half folded
What athletes say
I used to check the tide in one app and the wind in another. Now I get a ping when it's actually worth going, and I can see if the current is going to fight me.
Questions
How does good time to go work?
WindWaterSail scores every half hour of the forecast at your spot against the conditions you set, marks the good windows on the chart and can notify you up to three days ahead.
Can I change what counts as a good time to go?
Yes. Set the lightest wind you'll go out in and the gear you're riding, and the windows change to match.
Where does the data come from?
Tides and currents are NOAA CO-OPS predictions. Wind comes from Open-Meteo and the marine forecast from the National Weather Service.
Where does it work?
Anywhere NOAA publishes predictions: roughly 3,500 tide stations and 4,400 current stations across the United States.
How much does it cost?
One fixed price on the App Store. No account, no ads, no tracking.
Predictions are astronomical only and don't account for wind, river runoff or pressure. Good time to go is a planning aid, not a safety call. Check conditions yourself before you launch. Data from NOAA CO-OPS, the National Weather Service and Open-Meteo. Not affiliated with NOAA.
WindWaterSail
Tides, currents and wind. iPhone and Apple Watch.
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Fuel Perfect
LiveHeat
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