Climate and Weather of Sumatra, Indonesia

In Indonesia you have several regions, one of which is called Sumatra. The most popular city in this region is Medan, whose climate data we'll examine to provide you with an overview of what weather to expect in Sumatra. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.

The climate in Sumatra, particularly in Medan, is characterized by consistently high temperatures, with average maximums never falling below 31°C.

Sumatra reaches its peak temperature in May, hitting 33°C, while January brings cooler conditions with daytime highs of 31°C.

The peak heat season generally takes place in April, May and June.

Precipitation in Sumatra varies considerably throughout the year. The wettest conditions occur in November with 377 mm of rain, while February stays relatively dry with 176 mm.

Visitors hoping to maximize their time in the sun should consider planning their trip for June, when daylight hours are at their peak.

Select a Month of Interest

Check the conditions for any month of the year.

Interested in the detailed Weather and Climate of Sumatra, Indonesia?

Please select a city below the map you wish to travel to, or the one closest to your destination. Each selected city will show you the following graphs:
1. Average minimum and maximum temperature over the year
2. Average monthly precipitation over the year (rainfall, snow)
3. Average monthly hours of sunshine over the year
On certain pages we also offer other historical climate data like humidity wind speed and water temperature.