If you head this way in winter time, make sure that you are well prepared clothes-wise. You need a good pair of winter boots with adequate tread to help stay upright; thermals for under your regular clothes; a good winter jacket (goretex or similar is advisable); thick waterproof gloves; decent hat.
Also recommended would be hand cream - the humidity is very low so your skin can dry out very quickly.
Fondest memory: Blizzards can last several days, and it can then take another 2 or 3 days for the city to get back to normality - roads cleared, pathways open etc. The temparature can drop scarily low - January and February can see teperatures as low as -25 Celcius in the city.
Favorite thing: The best season to travel here ofcourse is in summer, I was here in April and it was raining a little bit.
Favorite thing: Sakhalin is the beautiful island located on the Russian Far East. It's pureness and untouched wildlife makes the island one of the interesting tourist areas.