Climate Overview
The climate in Medan is cold. The average annual temperature is 1°C and approximately 104mm of precipitation falls per year. August is the wettest month, receiving around 9mm of rainfall. Medan sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Medan has relatively stable temperatures year-round, staying within a 0°C range. December is the warmest month, though highs remain moderate at 1°C with a mean of 1°C. June is the coolest month, with minimum temperatures around 1°C and an average of 1°C. Daily temperature variation is modest, with an average difference of 0°C between highs and lows.
Precipitation
Medan is a quite dry location, receiving approximately 104mm of precipitation annually, which averages out to around 9mm per month. The wettest month is January, averaging 9mm of rainfall. May and July also tend to see above-average precipitation. The driest month is November, with just 8mm. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Medan is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
23 days until Autumn
It is currently summer in Medan, which began on June 21, 2026. Medan sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in December at around 1°C, while the coldest stretch bottoms out in June near 1°C. Autumn is next, beginning on September 23, 2026 — 23 days from now.
Spring
Temperatures range from 1 to 1°C. Precipitation is minimal, with only around 27mm for the entire season. Winds are generally light, averaging 8km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 1 to 1°C. Precipitation is minimal, with only around 28mm for the entire season. Winds are generally light, averaging 7km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 1 to 1°C. Precipitation is minimal, with only around 23mm for the entire season. Winds are generally light, averaging 7km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 1 to 1°C. Precipitation is minimal, with only around 26mm for the entire season. Winds are generally light, averaging 7km/h. A warm coat and layers are recommended, especially for early mornings and evenings.
Monthly Climate Data
The table below shows monthly climate averages for Medan based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
