Climate Overview
The climate in Medan is hot. The average annual temperature is 26°C and approximately 3107mm of precipitation falls per year. Medan receives a notable amount of rainfall throughout the year, including during its driest month. 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 10°C range. The warmest month is July, when average highs reach 32°C and the mean temperature sits around 27°C. February is the coolest month, with minimum temperatures around 22°C and an average of 26°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.
Precipitation
Medan is a very wet location, receiving approximately 3107mm of precipitation annually, which averages out to around 259mm per month. The wettest month is November, averaging 385mm of rainfall. December and October also tend to see above-average precipitation. The driest month is July, with just 168mm. That's 218mm less than November, the wettest month. 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 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, 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
90 days until Summer
It is currently spring in Medan, which began on March 20, 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 July at around 32°C, while the coldest stretch bottoms out in February near 22°C. Summer is next, beginning on June 21, 2026 — 90 days from now.
Spring
Temperatures range from 22 to 32°C. Rainfall is heavy, totalling around 710mm across the season with a monthly average of 237mm. Winds are generally light, averaging 8km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 22 to 32°C. Rainfall is heavy, totalling around 613mm across the season with a monthly average of 204mm. Winds are generally light, averaging 8km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 22 to 31°C. Rainfall is heavy, totalling around 1008mm across the season with a monthly average of 336mm. Winds are generally light, averaging 7km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 22 to 31°C. Rainfall is heavy, totalling around 776mm across the season with a monthly average of 259mm. Winds are generally light, averaging 8km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
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.
