Climate almanac
Pematangsiantar
North Sumatra, Indonesia · 2.96°, 99.07°
What is the weather like in Pematangsiantar in September?
In September, Pematangsiantar is typically 84°F (29°C) during the day and 71°F (21°C) at night. The month brings about 13 in (333 mm) of precipitation in total.
- Average high84°F (29°C)
- Average low71°F (21°C)
- Precipitation13 in (333 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)