Medan weather in September
September in Medan: hot, soaked, with very humid — a gamble, with 27 rainy days.
#8 of 12 months in Medan · #828 of 897 destinations to visit in September · comfort 56/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Medan in September
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Medan climate normals — September
| Daytime high | 30°C / 85°F | 🥵 hot |
|---|---|---|
| Nighttime low | 23°C / 73°F | |
| Rainfall | 298 mm / 11.7 in | ⛈ soaked |
| Rainy days | 27 days | |
| Humidity | 88% | 💦 very humid |
| Dew point | 24°C / 74°F | |
| Sunshine | 8.8 h/day | |
| Daylight | 12.1 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 88 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Medan in September — FAQ
- Is September a good time to visit Medan?
- September in Medan: hot, soaked, with very humid — a gamble, with 27 rainy days. It ranks #8 of 12 months for Medan on SeasonMap's comfort score (56/100).
- What is the weather like in Medan in September?
- In September, Medan averages a daily high of 29.7°C and a low of 22.8°C, with about 297.9 mm of rain over roughly 26.6 rainy days.
- What is the air quality in Medan in September?
- Medan has a mean US Air Quality Index of about 88 in September.