If the forecast is looking grim, why not head to Husio uttan Anna? You'll be surprised just how many interesting facts you can uncover about days gone by here.
You'll have sightseeing choices galore when spending time in Vagur. Husio uttan Anna is a great place to start here, but there are loads of other worthwhile places to appreciate. History and Maritime Museum of Tvoroyri, and Church of Porkeri are near the collection of historical artifacts and will fill in your day nicely.