Północna Sumatra ma suchą pogodę w lutym

i loty z kuala lumpur kosztują 164 zł
https://www.acouplescalling.com/north-sumatra-itinerary/
For those who only have a week in Sumatra, below is an example itinerary:
Day 1: Medan
Days 2-3: Berastagi
Days 4-5: Samosir Island (Lake Toba)
Days 6-7: Bukit Lawang (Gunung Leuser National Park)
*If you can, allow an additional day to travel back to Medan and catch your flight home. Otherwise, leave Bukit Lawang early in the morning and book an evening flight out on day seven.