Medan has a tropical wet climate, with no distinct dry and wet seasons. Its temperatures barely vary across the months and has an average temperature of 26.8 °C. There is an annual rainfall of 2137 mm.
The seasons in Medan are as follow:
- Less rainy – May to September are months with slightly less rain, and February is the driest month. The period of June to August is peak tourism season, so more crowd is expected at the attractions.
- Rainy – October to April are months with more rain, and October is the wettest month. Tourism is slow during this season.