Medan Temperature by Month

The average annual maximum temperature in Medan, Sumatra, Indonesia is 32°C (90°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Medan compares to cities worldwide.

The climate in Medan remains fairly constant, offering very warm temperatures throughout the year. Maximum daytime temperatures reach a very warm 33°C (91°F) in May, dropping to a very warm 31°C (88°F) in December. Nighttime lows stay between 24°C (75°F) and 23°C (73°F).

The chart below illustrates the average maximum day and minimum night temperatures in Medan by month:

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. May, the warmest month, gets 136 hours of sunshine.

The chart below shows the average temperature throughout the year:

Medan's average annual maximum temperature is 32°C (90°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Medan this rarely lasts long on the ground.

For more on Medan's weather, including monthly rainfall, sunshine hours, and humidity, visit our Medan climate page.