Best travel time to Samosir Island
The best months in Lake Toba are:
February, March, June, July, August, September and October
The rainiest months are:
April, May, November and December
Here on Samosir Island, the temperatures are 18/19° at night and 25 to 29° during the day. The weather only gets warmer a few days a year. Tuktuk is 900 m above sea level, therefore the climate is pleasant. So not hot and humid, like in places at sea level.