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Pematangsiantar Weather in September
September in Pematangsiantar averages 30°C (86°F) during the day and 21°C (70°F) at night. September is part of the rainy season, with around 359 mm (14 in) of rainfall and frequent showers.
Rainfall in Pematangsiantar in September
As part of the rainy season, Pematangsiantar sees around 16 days of rain in September, with an average of 359 mm (14 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours, often in the late afternoon.
Temperature in Pematangsiantar in September
September in Pematangsiantar brings high temperatures, with highs of 30°C (86°F) and nights around 21°C (70°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights remain mild at 21°C (70°F), making evenings a pleasant time to be outdoors.September in Pematangsiantar can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Pematangsiantar Temperature in September
Min Temperature
21°C (70°F)
Max Temperature
30°C (86°F)
Chance of Rain
53%
Precipitation
359 mm (14 in)
Rainy days
16 days
Pematangsiantar Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Pematangsiantar - and find the best time to visit.
Best Places in Indonesia in September
Find out more about the weather in Indonesia and which places have the best travel conditions in this month. See all of Indonesia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Pematangsiantar in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything!
What To Do in Pematangsiantar in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Pematangsiantar 3-Day Forecast
More climate data for Pematangsiantar
See the full Pematangsiantar climate overview or explore weather in Indonesia.
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Where to go in September - average daytime high across popular destinations.
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