There first of all that fine European part is less cold than in Asia. On the side of the Baltic Sea, temperatures in winter are very cold (on average -8 degrees) where the sea freezes very frequently. Summer is milder, with temperatures of 21/22 degrees but a climate wich remains wet and rainy. August is the time most understandable to enjoy pleasant temperatures in the area.
Conditions for rent a boat
Rent a sailboat or motorboat to the Russia requires a navigation license or a boat license.
Sailboat and Catamaran available in Russia - Black Sea