Real-time wind and chart data is available with all savvy navvy passes.
This includes a:
During a trial
You also get full savvy navvy features, with real-time wind, during your free trial, so you can see what it's like to use savvy navvy for real before upgrading to the real thing.
NOTE in Demo mode you do not get real-time wind
Once your trial expires, unless you upgrade to one of the passes above, your account will switch to demo mode. This means you will still be able to plot routes but you will only be able to do so with "Demo weather.