When planning a visit to North Sumatra in Indonesia, it helps to know that temperatures typically range from 31°C (88°F) in December up to 33°C (91°F) during the peak of May. Our detailed climate overview is based on data from Medan, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
In North Sumatra, especially in Medan, temperatures remain consistently high year-round, with average maximums never dropping below 31°C (88°F).
The peak heat season generally takes place in April, May and June.
Precipitation in North Sumatra varies considerably throughout the year. The wettest conditions occur in November with 377 mm (15 in) of rain, while February stays relatively dry with 176 mm (6.9 in).
Visitors hoping to maximize their time in the sun should consider planning their trip for June, when daylight hours are at their peak.
