Best travel time to Samosir Island
The best months in Lake Toba are:
May, June, July, August, September
The rainiest months are:
Oktober, November, December, January
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.