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Weather in September in North Sumatra

Considering a trip to North Sumatra this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What is the weather like in North Sumatra in September?

North Sumatra is a region in Indonesia. September in North Sumatra generally has temperatures that range from warm to very warm, with heavy precipitation.

Temperatures

The average maximum daytime temperatures vary from warm in Tuk Tuk at 27°C to very warm in Medan at 32°C. Nighttime temperatures generally drop to 23°C in Medan and 19°C in Tuk Tuk. These night and day temperatures are average and some days may be even warmer. So be prepared and dress for the heat.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Tuk Tuk with an average of 237 mm to heavy rainfall in Pematangsiantar with 359 mm.

Average sunshine

Medan enjoys a balanced 122 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

For specific regional insights in North Sumatra for September, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our North Sumatra climate page.

Where to go in North Sumatra in September

Find more information for the most popular destinations in the North Sumatra on the map below. Click on a destination dot for more detailes.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in September for the 5 most popular destinations in North Sumatra?

Medan

In September Medan generally has very high temperatures with maximum daytime temperatures around 32°C, minimum nighttime temperatures around 23°C and heavy monthly rainfall. So on average the conditions are poor that month.

Medan
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
33°C 
23°C 
145 hours 
241 mm 
13 days 
poor 
32°C 
23°C 
122 hours 
341 mm 
15 days 
poor 
October   >> October
>>  
32°C 
23°C 
115 hours 
371 mm 
18 days 
poor 
Climate in Medan

Rantauprapat

In September Rantauprapat generally has very high temperatures with maximum daytime temperatures around 32°C, minimum nighttime temperatures around 23°C and heavy monthly rainfall. So on average the conditions are poor that month.

Rantauprapat
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
33°C 
23°C 
205 mm 
14 days 
poor 
32°C 
23°C 
280 mm 
16 days 
poor 
October   >> October
>>  
32°C 
23°C 
314 mm 
20 days 
poor 
Climate in Rantauprapat

Tuk Tuk

In September Tuk Tuk generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 19°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Tuk Tuk
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
27°C 
19°C 
193 mm 
15 days 
27°C 
19°C 
237 mm 
17 days 
October   >> October
>>  
27°C 
19°C 
273 mm 
20 days 
poor 
Climate in Tuk Tuk

Berastagi

In September Berastagi generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 18°C and heavy monthly rainfall. So on average the conditions are poor that month.

Berastagi
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
18°C 
145 hours 
232 mm 
15 days 
27°C 
18°C 
122 hours 
299 mm 
17 days 
poor 
October   >> October
>>  
27°C 
18°C 
115 hours 
338 mm 
20 days 
poor 
Climate in Berastagi

Parapat

In September Parapat generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 20°C and heavy monthly rainfall. So on average the conditions are poor that month.

Parapat
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
20°C 
213 mm 
16 days 
27°C 
20°C 
268 mm 
17 days 
poor 
October   >> October
>>  
27°C 
20°C 
299 mm 
20 days 
poor 
Climate in Parapat

Is your destination not in the list? Have a look at other destinations in North Sumatra, in Indonesia.

Is September the best time to visit North Sumatra?

Given the typically poor weather conditions in Medan, September may not be the ideal time to visit North Sumatra.

On average, the best time to visit North Sumatra is in February with generally tolerable weather in Medan. On the other hand, the months of January, April, May, June, July, August, September, October, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in North Sumatra. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Indonesia? Get detailed historical weather averages for many cities in Indonesia.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.