SailFlow: Marine Forecasts 4+

Wind, Maps, Waves & Tides


Designed for iPad

    • Free
    • Offers In-App Purchases



Whether you are racing or cruising, you want and need the best possible forecasts and live wind reports… and SailFlow has them! With over 65,000 proprietary Tempest Weather Systems deployed, get real-time local data right where you are. Advanced AI-enhanced forecasts provide the most accurate Nearcast data to our customers. Beyond our unmatched proprietary data, we supplement with data from government agencies including: NOAA, NWS, bring in data sets including the AWOS, ASOS, METAR, and even CWOP. Radar and forecast maps, along with customized point alerting are included to provide a broad view of the weather.

Why you should download SailFlow:

-Coastal weather observations from proprietary Tempest Weather Systems along with all public domain data (NOAA, NWS, METAR, ASOS, CWOP) including all major airports creating over 125,000 unique stations.

-Our exclusive Tempest Weather Systems with haptic rain sensors, sonic anemometers, along with local barometric pressure sensors provide ground truth observations.

-Live wind from our systems provides a better windy conditions flow map – enhanced by real weather stations’ live data with advanced quality control.

-Our Proprietary AI-enhanced Nearcast provides enhanced forecasting for temperature, wind gust, speed, direction, humidity, dewpoint, precipitation rate, probability of precipitation, and cloud cover percentage.

-Multiple public domain forecast models including High Resolution Rapid Refresh (HRRR), North American Mesoscale Forecast System (NAM), Global Forecast System (GFS), Canadian Meteorological Centre Model (CMC) and Icosahedral Non Hydrostatic Model (ICON).

-Free subscription for unlimited wind notifications/alerts with customizable thresholds to email, text, or in-app.

-Advanced location management: create your own Favorite station list to keep a constant eye on your go-to weather stations.

-Maps: Live and Forecasted Wind, Forecasted Temperature, Radar, Satellite, Precipitation and Clouds, as well as Nautical Charts.

-National Weather Service (NWS) Marine Forecasts & Marine Warnings / Alerts.

-All the additional weather parameters you want:
Tides charts
Wave Height, Wave Period
Water Temperature
Sunrise / Sunset
Moonrise / Moonset
Historical Wind Statistics
Windy days per month based on average and gust
Wind direction distribution

Want to get more Weather features?

-Upgrade to Plus, Pro, or Gold membership to gain access to more weather stations and forecast locations.

-Access our exclusive ultra high-quality array of Meteorologist-sited Pro weather stations at top coastal locations, including our professional hurricane-proof weather stations – in partnership with WeatherFlow Networks.

-Unlock access to SailFlow’s second-to-none Meteorologist-written hyper-accurate pinpoint Pro Forecasts written daily for sailing hotspots coast-to-coast.

-Detailed weather information of interest to coastal residents and property owners.

-On the water features
Sea Surface Temperatures
Sea Surface Currents

-Detailed Historical Wind Statistics

-Historical wind data by year

What else can you do?

Join the Tempest Weather Network!
-Get a Tempest Weather System for your club, dock, or backyard.
-Tempest data can be displayed in the SailFlow application.
-Share data with the broader community and increase the science record.

Want more information?

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By purchasing a subscription or downloading an app you agree that you have read and accept our Privacy Policy and Terms of Use.

What’s New

Version 5.32

Bug Fixes & Performance Improvements

Ratings and Reviews

3.7 out of 5
3 Ratings

3 Ratings

Cherrybib ,

First class forecasts

This is our " go to" site for wind forecasts. As cruising sailors, both offshore and sometimes coastal, accurate weather predictions are vital and we have found Sailflow to be the best we have found.

scoundrel 37 ,

Latest update -disastrous

This has gone from a very sweet weather app, great for sailors to a completely disfunctional lump - unusuable in iPad Pro. Multiple failures and even boots me out to the desktop. I have never seen anything so glitched released for use.

Developer Response ,

Wow, Scoundrel37, give us a shout at, and let us know exactly what you are seeing, what version of OS you are using with your iPad Pro, etc. Thank you. Our goal will be to track down the issue or incompatibility that you're experiencing! ,

Best wind app I've seen

Use this for planning kitesurfing lessons. Has everything I need - speed, direction, gusts, weather, history, real time and above all it's fairly accurate.

App Privacy

The developer, WeatherFlow, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

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