The YBW.com weather service gives you 24 hours of free data from this highly regarded precision weather planner from theyr.net, shown above. For a 14-day free trial click here (only a user id and password are required and there's no obligation to sign up). The YBW.com weather service is in good company. Transat, Ostar, the crew of Gypsy Moth IV, British Olympic sailing teams, RORC, Rescue and Life Boat organisations, fishing fleets and shipping lines are all users of this service.

The ease of use of this system belies the quality of the data.

The service includes wind velocity, precipitations (including snow), temperature, cloud cover and pressure details (isobars) for the whole of the UK, Europe, Scandinavia, Atlantic, North & Central America, the Caribbean and all the surrounding seas and oceans. Use the 24 hour weather planner now or subscribe to a more detailed service for just £4.95 a month or £39.95 a year. This includes:

• 6 Day Forecasts
• 0.1° high resolution models
• 100 times more data than the standard 1° to capture all weather patterns and sizes of 10km and greater and shows land and sea effects on a very small scale
• Detailed regional 6 day meteograms
• Includes all precipitations (rain, snow, freezing rain), wind and temperature
• All land features and topography taken into account
• The only service to take account of vegetation type, soil type, snow cover and depth, slope and real topography

Subscribe now to the YBW.com weather service from theyr.net