Weather in Pematangsiantar in January
Pematangsiantar, Indonesia averages a high of 26.7°C (80.1°F) and low of 20.4°C (68.7°F) in January, with 27 rain days and 8.8 hours of daily sunshine. Travel score: 64.6/100 (Good). The best time to visit Pematangsiantar is February.
High
27°C80°F
Low
20°C69°F
🌧️
27
rain days
☀️
8.8
hrs/day sunshine
💧
89%
humidity
65— Good
January 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 January?
Pematangsiantar receives an average of 241.7mm of rainfall across 27 rainy days in January. The annual total is 3227.8mm.
What should I pack for Pematangsiantar in January?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 27°C
🧥
Waterproof jacket
Frequent rain expected (27 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Indonesia in January?
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