Weather in Pematangsiantar in December
Pematangsiantar, Indonesia averages a high of 26.5°C (79.7°F) and low of 20.6°C (69.1°F) in December, with 28 rain days and 7.6 hours of daily sunshine. Travel score: 62.2/100 (Good). The best time to visit Pematangsiantar is February.
High
27°C80°F
Low
21°C69°F
🌧️
28
rain days
☀️
7.6
hrs/day sunshine
💧
91%
humidity
62— Good
December in Pematangsiantar is warm and very rainy — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Pematangsiantar?
How much does it rain in Pematangsiantar in December?
Pematangsiantar receives an average of 306.1mm of rainfall across 28 rainy days in December. The annual total is 3227.8mm.
What should I pack for Pematangsiantar in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 27°C
🧥
Waterproof jacket
Frequent rain expected (28 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧴
Sunscreen SPF 30+
8 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Indonesia in December?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31