PredictWind vs Weather Underground

Official weather supplier to the 37th America's Cup and The Ocean Race. Founded by Olympian and two-time America's Cup winner Jon Bilger, and used by over 2 million sailors, cruisers, fishers, boaters, paddlers, wingfoilers and kiters. Free wind, wave, tide, current and rain forecasts for anywhere on the water, from your home harbour to the middle of an ocean. FORECASTS YOU CAN CROSS-CHECK Compare the world's top-ranking models side by side: ECMWF, AIFS, ICON, UKMO and GFS, plus our own PWAi, PWG and PWE models. Add high-resolution regional models including HRRR, RRFS, AROME, ICON D2, UKMO 2K and our exclusive 1 km PWG & PWE, where available. When the models agree, go. When they don't, you know to wait. MAPS BUILT FOR THE WATER High-resolution forecast maps down to 1 km in selected areas for wind, gust, wave, rain, cloud, pressure, CAPE, air and sea temperature, ocean data and solunar, with animated streamlines, wind barbs or arrows and synoptic displays. Split-screen maps compare models or conditions, such as wind alongside currents. DASHBOARD TO SEE EVERYTHING Our new Dashboard brings together your Daily Briefing, wind, wave and tidal current maps, forecast graphs and a 10-day forecast, all in one view. WEATHER ROUTING PredictWind calculates the optimal route for comfort or speed, factoring in wind, wave, tide, ocean current, depth and your sailing yacht's or powerboat's dimensions and performance. Power Routing finds fuel-efficient routes tailored to your powerboat. Plan longer passages with ECMWF ensemble forecasts out to 30 days. DEPARTURE PLANNING See the conditions you'd meet across four departure times, then choose the departure window that suits your boat and your crew. TIDAL AND OCEAN CURRENT MAPS Tidal current maps at 100 m resolution in high-current areas, a 400 m model within 90 km of the coast and 4 km out to 600 km offshore, coupled with global ocean currents for the complete picture. AI ROUTING AND DEPARTURE SUMMARIES Trained for what matters to boaters, our AI summaries give you expert insight to help you make the right call and keep your family, friends and crew safe. PLAN AHEAD WITH CLIMATE DATA Explore 10 years of wind, wave and weather data, with monthly averages and wind and wave roses. Compare typical morning, afternoon and night conditions to choose when and where to sail, race or explore. PASSAGE GUIDE Find the best time of year for passages worldwide, with months rated Good, Marginal or Avoid, plus written summaries of historical conditions and seasonal planning advice. SEE WHAT'S HAPPENING RIGHT NOW Live wind observations, webcams and AIS coverage of more than 280,000 vessels, so you know the real conditions before you leave the dock. Hybrid satellite imagery, global rain radar and lightning overlays help you track approaching weather, rain and thunderstorms. ALSO INCLUDED • Daily Briefing: the forecast as a plain-text summary. • Tables: detailed wind, wave and rain analysis side by side. • Graphs: compare multiple forecasts at once. • Forecast Validation: see which model has been most accurate near you, checked against actual wind observations. • Weather Alerts: get told when your conditions arrive, including GMDSS extreme weather warnings. • Local Knowledge: the best spots, amenities and activities at your destination. • GPS Tracking: a free tracking page for your blog or website with wind data overlaid. • AI Polars: learn your boat's performance for more accurate routing. Requires a DataHub and Professional subscription. • Forecast Replay, Sail Crossover charts and comfort routing modes for maximum roll, vertical acceleration and slamming. Free to download, with forecasts for any location. Basic, Standard and Professional subscriptions add higher-resolution models, longer-range data and expert tools. Terms and conditions: https://www.predictwind.com/about-us/terms-and-conditions Privacy policy: https://www.predictwind.com/about-us/privacy-policy

Discover a reliable, real-time and hyper-local forecast that will always warn you about upcoming severe weather. Weather Underground combines data from over 250,000+ personal weather stations and a proprietary forecast model to give you the most accurate and hyperlocal forecasts, at a microclimate level. Discover about current conditions, interactive Nexrad radar, get customizable severe weather alerts and much more. You’ll always be prepared for whatever the weather brings. 5 REASONS TO DOWNLOAD WEATHER UNDERGROUND • Severe weather alerts: set weather alerts for your exact position, so you can always be prepared for an upcoming storm! • Local conditions: get current weather conditions from local weather stations and hourly/daily summary forecasts up to 10 days in the future, which include chance of precipitation and daily weather summaries. • Most detailed weather data: stay updated with the best weather data including temperature, “Feels Like,” wind speed, wind directions, today’s rain accumulation, humidity, dew point, visibility, and pressure. • Other geographical data: discover our air quality index, UV index, local flu outbreaks, sunrise & sunset and moonrise & moonset. • Customized experience: set your app with light & dark modes, various map types and units. DISCOVER THE UNIQUE FEATURES OF WEATHER UNDERGROUND • Interactive radar maps & severe weather: • The most interactive weather map on mobile allows you to select from different weather overlays, personal weather stations, nexrad radar, satellite, heat maps, and rain accumulation. • Sophisticated weather visualizations with hi-res satellite & cloud cover imagery from GOES-16, powered by data from NOAA. • Keep an eye out for extreme weather and always be prepared with severe weather alerts. Accurate hyper-local forecasts: • Over 250,000 personal weather stations report the most accurate local weather conditions. • Made to fill in the gaps between the airport weather stations that other weather services rely upon to generate forecasts - meaning our data is generated from actual data points in your neighborhood. Subscribe to Premium! • Upgrade and remove all ads from your weather app by purchasing an annual subscription. • Access Smart Forecasts: set your ideal weather conditions for your outdoor activities and we’ll tell you when to go. • View Extended Hourly Forecasts up to 15 days in the future. You can cancel your Weather Underground subscription anytime through your iTunes account settings, or it will automatically renew. This must be done 24 hours before the end of any subscription period to avoid being charged another fee. Subscription payments will be charged to your iTunes account at confirmation of your purchase and upon commencement of each renewal term. For more information, please see our Privacy Policy and Terms of Use. ----- Privacy & Feedback • Our Privacy Policy can be viewed here: https://www.wunderground.com/company/privacy-policy • Our Terms of Use can be viewed here: https://www.wunderground.com/company/legal
 • If you have any questions or suggestions about our weather service, please do not hesitate to get in touch at support@wunderground.com.