SailFlow: Marine Forecasts

Contains adsIn-app purchases
4.2
1.93K reviews
100K+
Downloads
Content rating
PEGI 3
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About this app

Whether you are racing, sailing or just cruising, you want and need the best possible forecasts and live wind reports… and SailFlow has them! We have deployed over 65,000 proprietary Tempest Weather Systems, giving you real-time local weather right where you sail. With exclusive SailFlow stations on near shore markers, buoys, piers, at yacht clubs and key waterfront spots, we have a terrific number of local sailing areas covered. Our Tempest Rapid Refresh Model delivers the most accurate Nearcast predictions to our customers. We supplement our proprietary data with information from government agencies including: NOAA, NWS, and bring in reports sets including the AWOS, ASOS, METAR, and even CWOP. SailFlow creates a complete view of the weather with radar, forecast maps, and customized alerting.

Why you should download SailFlow:

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

- Our exclusive Tempest Weather Systems deployed at marinas and beaches 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 – augmented by current station reports 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 which is perfect for sailing.

- 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.

- Create your own favorite station list to keep an eye on your go-to weather stations at all your marine and sailing spots.

- 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.

- Additional weather parameters:
- 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 more weather?

- 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 stations at top coastal locations, including our professional hurricane-proof stations

- Unlock access to SailFlow’s second-to-none meteorologist-written hyper-accurate pro forecasts written daily for sailing hotspots coast-to-coast.

- Detailed weather at points of interest to coastal residents and property owners near the ocean, rivers, and other bodies of water.

- On the water features
- Sea surface temperatures
- Sea surface currents
- Detailed historical wind statistics
- Historical wind speed average by year

What else can you do?

- Join the Tempest Weather Network!
- Get a Tempest Weather System for your club, dock, or backyard.

Want more information?

Support at: help.tempest.earth/hc/en-us/categories/200419268-iKitesurf-iWindsurf-SailFlow-FishWeather-WindAlert

Connect with Tempest:
- facebook.com/tempestwx
- twitter.com/tempest_wx
- youtube.com/@tempestwx
- instagram.com/tempest.earth

Contact Tempest: help.tempest.earth/hc/en-us/requests/new
Website: tempest.earth

By purchasing a subscription or downloading SailFlow you agree that you have read and accept our Privacy Policy and Terms of Use.
got.wf/privacy
got.wf/terms
Updated on
Dec 3, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
This app may collect these data types
Personal info, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.2
1.81K reviews
Joe Omundson
July 6, 2025
I got the Plus trial in large part for the 4x2 widget, but I can't add it to my screen. Edit: I didn't realize the first option ("selected profile") needed to have its only option selected in order for the next field to be able to populate. It already indicated it was selected with a dot so I just backed out of that menu at first. Now it works
Did you find this helpful?
WeatherFlow
July 8, 2025
Glad to hear you're enjoying premium membership on SailFlow, Joe! You can contact our support team if you have any questions or trouble. Visit help.tempest.earth
Gabriel
December 2, 2025
Incredibly detailed and accurate forecast. It's the only wind forecast I trust. Tide forecasts could be more accurate. Being able to add tide forecast to the hourly table would be nice too.
Did you find this helpful?
WeatherFlow
December 2, 2025
Thanks for the wonderful review, Gabriel! Thank you for your feedback on the tide predictions. We'd be happy to investigate any inaccuracies. We do have a table summary and a graph showing hourly tides and currents.
David Werner
July 3, 2025
App is okay, but holds back. Appears to provide false data unless I pay for Plus. Then local/likely data is suppressed unless I pay Pro. Adding features would be fair, but pushing questionable data unless I pay is not.
1 person found this review helpful
Did you find this helpful?
WeatherFlow
July 3, 2025
Hi David, that is definitely not the case. False data is not provided at any membership tier. We'd love to hear from you so we can help clear up any confusion. You can contact support by visiting help.tempest.earth. Thanks!

What’s new

We’ve added a new Advisories Layer to your SailFlow map! Quickly view official government alerts, such as weather watches and warnings, high surf advisories, small craft advisories, and more - right on the map. Stay aware, stay prepared, and get the full weather picture at a glance.