Pematangsiantar Weather in December

December in Pematangsiantar typically sees daytime highs of 29°C (84°F) and nighttime lows of 21°C (70°F). December falls within the rainy season, so heavy rainfall is to be expected.

Rainfall in Pematangsiantar in December

As part of the rainy season, Pematangsiantar sees around 17 days of rain in December, with an average of 314 mm (12 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in Pematangsiantar in December

December in Pematangsiantar brings typical temperatures with highs around 29°C (84°F) and lows of 21°C (70°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 21°C (70°F) overnight, nights are warm enough to sit outside comfortably in light clothing.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Pematangsiantar. Our weather planner can help you explore destinations with more pleasant weather conditions.