Climate almanac
Pematangsiantar
North Sumatra, Indonesia · 2.96°, 99.07°
What is the weather like in Pematangsiantar in December?
In December, Pematangsiantar is typically 82°F (28°C) during the day and 71°F (22°C) at night. The month brings about 14 in (357 mm) of precipitation in total.
- Average high82°F (28°C)
- Average low71°F (22°C)
- Precipitation14 in (357 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)