Pematangsiantar Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Pematangsiantar.
Climate overview of Pematangsiantar
With consistently stable weather, Pematangsiantar, Sumatra, Indonesia, sees little seasonal temperature change. Daytime highs average 30°C (86°F), ranging from 31°C (88°F) in May to 29°C (84°F) in December.
The city receives considerable rainfall, with around 3275 mm (129 in) annually. October is the wettest month.
Pematangsiantar Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Pematangsiantar - and find the best time to visit.
Monthly Temperature in Pematangsiantar
The climate in Pematangsiantar remains fairly constant, offering very warm temperatures throughout the year. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in May to a comfortable 29°C (84°F) in the coolest month, December.
Nights vary from 22°C (72°F) in May to around 21°C (70°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Pematangsiantar
Pematangsiantar is known for its substantial rainfall, with annual precipitation reaching 3275 mm (129 in). Pematangsiantar offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month October (366 mm (14 in)) and the driest month February (204 mm (8 in)) is not too significant. For more details, please visit our Pematangsiantar Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Pematangsiantar
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January
- Warmest weather: February, March, April, May, June, July, August, September and October
- Fewest rainy days: February, March, June and July
Frequently asked questions about the climate in Pematangsiantar
What is the best time to visit Pematangsiantar?
January typically offers the most optimal weather in Pematangsiantar. In contrast, February, March, April, May, June, July, August, September, October, November and December tend to have less optimal conditions.
What temperatures can I expect in Pematangsiantar?
Daytime highs range from 29°C (84°F) in December to 31°C (88°F) in May. Nighttime lows range from 21°C (70°F) to 22°C (72°F). Temperatures stay relatively stable year-round.
How much rain does Pematangsiantar get?
Annual rainfall is around 3275 mm (129 in). October is the wettest month with 366 mm (14 in), while February is the driest with 204 mm (8 in).
Pematangsiantar 3-Day Forecast
Pematangsiantar on the map
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