We took a huge car ferry (like a cruise liner that also carries cars, trucks and buses) from Tallinn to Helsinki (2.5 hours) on Saturday and arrived to pretty dismal weather. Luckily it soon stopped raining but was cool and overcast all day. This morning when I first looked out the window it was brilliantly sunny, but within 15 minutes had clouded up. Weather sure is changeable in this part of the world!