Climate and monthly weather forecastMedan, Indonesia

The climate of Medan

Medan, positioned in Indonesia, is characterized distinctly by the Af classification according to Köppen climate categorization - a tropical rainforest climate. The weather reflects consistently high temperatures, significant rainfall, and relative humidity throughout the year. Largely unaffected by seasonal changes, the temperature, in this specific region, varies between a maximum average of 33.5°C (92.3°F) and a minimum average close to 23°C (73.4°F). The province sees an abundant average rainfall amount varying from 60mm (2.36") in February to 154mm (6.06") in October. The overcast sky is a common sight in Medan with cloudiness percentages varying from 30% to 45% throughout the year.

High relative humidity (ranging from 75% to 81%), prevalent throughout the year, offers a moist environment in Medan. The daylight duration remains constant at approximately 12 hours, while weather observant can see about 8 to 9 hours of sunshine. Wind speeds are perpetually low, with an average range of 4.8km/h (3mph) to 5.6km/h (3.5mph). The atmospheric pressure shows a slight variation between 1009.6 mb and 1010.9 mb. A UV index of 7 designates a constant year-round high exposure to ultraviolet radiation.

The most rainfall occurs in the transition months of October and November, with averages of 154mm (6.06") and 134mm (5.28") respectively, complemented with the highest count of rainy days, around 28 days. On the contrary, the dry season presents itself from February to April as the rainfall decreases to around 60mm (2.36") to 71mm (2.8") with an average of 18 to 24 rainy days.

The best time to visit Medan

The relatively drier period from late February to April presents itself as the most suitable time to visit Medan. February records the lowest average rainfall amount at 60mm (2.36") and sees mostly sunny days with around 8.8 hours of sunshine. Visitors can enjoy sights and festivities in manageable humidity levels of 75-76%.

The worst time to visit Medan

October is considered the least favored time to visit, due to the highest average rainfall recorded at 154mm (6.06"), spanning across 28 days of the month. Even though temperatures are relatively unchanged, elevated relative humidity reaching up to 80%, compounded with abundant rainfall, might not provide an enjoyable experience for tourists.

Spring weather in Medan

The spring months from March to May in Medan bring about a change towards the wetter season. Average temperatures consistently sit above 30°C (86°F) peaking at 33.1°C (91.6°F). Rainfall quantity progressively increases from 62mm (2.44") to 105mm (4.13") throughout this period, with March experiencing the lowest rainfall. Relative humidity is marginally elevated with figures varying from 75%-77%.

Summer weather in Medan

The summer months showcase similar weather patterns as the spring. However, the months of June, July, and August experience slight dips in temperature with averages between 33.5°C (92.3°F) to 33.1°C (91.6°F), along with relative humidity of around 75%-76%. The average rainfall fluctuates around 81mm (3.19") to 104mm (4.09").

Autumn weather in Medan

Autumn, spanning from September to November, presents the wettest conditions in Medan. While temperature figures remain consistent, relative humidity progressively increases, culminating at 80% in November. Rainfall intensifies significantly, with averages standing at 105mm (4.13") in September and rising to an annual high of 134mm (5.28") in November.

Winter weather in Medan

Finally, the winter months from December to February experience stable temperatures, hovering between 30.8°C (87.4°F) to 31.7°C (89.1°F). Relative humidity is at its highest level, typically above 80%. Precipitation decreases in this period with the month of February experiencing the least rainfall at 60mm (2.36"). The month of February being the driest, could offer some respite from the otherwise consistently wet climate.

Weather in January

January's climate in Medan, Indonesia is defined by optimal air pressure, reaching an average of 1010.9 mb. With the sun shining for an estimated 8.3 hours per day, locals and visitors alike bask in the city's warm ambiance. Occasional rain showers offer cooling relief, contributing to the relatively high humidity. Weather in January »

Weather in February

The weather in Medan experiences a minimal fluctuation from January to February. A slight increase in average sunshine hours, 8.8 hours, announces the arrival of February. Light winds gently sweep through the city, maintaining a nice warm atmosphere. Weather in February »

Weather in March

In March, the temperature slightly increases with the high reaching 32.6°C (90.7°F) and the low around 24°C (75.2°F). Accompanied by slightly reduced humidity, visiting Medan becomes increasingly appealing. The increase in heat, however, is seamlessly balanced by the relaxing cool winds. Weather in March »

Weather in April

Moving from March to April, Medan experiences a slight shift in its weather conditions. The temperature has a slight increase, but it is largely unnoticeable to the untrained senses. Ample daylight ensures enough time to capture the scenic beauty of the city. Weather in April »

Weather in May

May attracts increased rainfall with an impressive average of 105mm (4.13"). The month is characterized by frequent warm afternoons, although nights offer a considerably more pleasant respite. Prepare for higher chances of encountering precipitation, though showers are often brief. Weather in May »

Weather in June

Despite a decrease in rainfall from May to June, the overall climate remains predominantly warm and humid. The high temperatures, coupled with humid conditions, make it integral to stay hydrated throughout the day. Being a coastal city, Medan isn't far from pleasant breeze blowing from the sea in the evenings. Weather in June »

Weather in July

July brings a steady weather pattern to the city of Medan. While the weather remains mostly warm, one may expect an occasional drizzle providing a pleasant respite from the temperature rise. Pleasant breezes set an inviting mood for various outdoor activities. Weather in July »

Weather in August

Medan witnesses a slight drop in temperature, with August boasting a high of 33.1°C (91.6°F). The natural beauty of the city is enhanced by sustained sunshine, accentuated by the relatively low humidity. Even though August sees increased rainfall, the warm weather prevails, making it another convenient month for sightseeing. Weather in August »

Weather in September

Weather conditions in September bear similarities to the preceding months, with warm temperatures and almost predictable rains. Enhancing the month's characteristic tropical ambiance, a slight decrease in temperature is noted. Weather in September »

Weather in October

October experiences a substantial increase in rainfall, accumulating an average of 154mm (6.06"). As the soaring temperature becomes moderately warm, outdoor activities can be thoroughly enjoyed. Most days remain overcast, but the sun still manages to peek out periodically, maintaining a balanced warmth. Weather in October »

Weather in November

The weather remains mostly consistent from October to November, with more rain showers anticipated. Despite this, the city shows off the beauty of its tropical landscape, courtesy of the balanced warm weather. Medan residents are accustomed to a few heavy showers but can also enjoy the sunshine when it appears. Weather in November »

Weather in December

As Medan, Indonesia enters December, the relatively consistent temperature continues to make it a haven for warmth-seekers. However, increased cloud cover above the city limits the hours of sunlight to only 11.9 hours. Nevertheless, the ambient air pressure maintains a consistent value, ensuring that the warm weather remains undisturbed. Weather in December »