Tide Tables: Plan your visit to the beach for when the tide’s right.
Website: Tide Tables
A more complete five day forecast with the next two days in detail. Includes maps and facility to select other UK area forecasts.
Oban (for East Mull): Met Office Oban
Tiree (for West Mull): Met Office Tiree
A Full Atlantic chart for the serious minded, and for a bit of fun. A UK Met Office Atlantic chart displayed by this German weather forecast site.
Website: Atlantic weather chart
A first class general forecast, with charts. This is really one for the professionals. Available on subscription only
Website: Theyr weather