Medan Weather in September
September in Medan brings very high temperatures, with daytime highs of 32°C (90°F) and nights around 23°C (73°F). It's part of the rainy season, with 341 mm (13 in) of rainfall on average, so an umbrella or poncho is a good idea.
Rainfall in Medan in September
Medan is in the rainy season in September, with rain on around 15 days and an average of 341 mm (13 in). The rain this month falls heavily when it arrives. Late afternoons in particular can see strong showers, so waterproofs are worth keeping handy.
Temperature in Medan in September
Expect highs of 32°C (90°F) in Medan in September, with nights dropping to around 23°C (73°F). It's usually most comfortable outside during the morning and later in the day. With overnight lows of 23°C (73°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Medan in September
With about 122 hours of sunshine, the area enjoys a nice balance of sun and rainy moments, creating a pleasant environment.Our weather planner can help you find worldwide destinations with pleasant weather during this period. February typically offers the best weather for Medan.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Indonesia, check out our Medan's climate page.
Medan Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
32°C (90°F)
Chance of Rain
48%
Precipitation
341 mm (13 in)
Rainy days
15 days
Sunshine
122 hours
Percentage Sunshine
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Medan typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in September
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Medan in September
Browse day-by-day weather records for Medan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Medan historical weather extremes in September
According to our 34 years of weather records for Medan, the following extremes were recorded between 1991 and 2025.
- On September 25, 2009, temperatures climbed to 36°C (97°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 24°C (75°F), recorded on September 23, 2003.
- Nighttime temperatures dropped to 21°C (70°F) on September 2, 2013, marking the coldest September night on record.
Best Places in Indonesia in September
Find out more about the weather in Indonesia and which places have the best travel conditions in this month. See all of Indonesia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Medan in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Medan in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Indonesia, check out our Medan's climate page.
See the full Medan climate overview or explore weather in Indonesia.
