North Sulawesi Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in North Sulawesi, Indonesia in September.

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

What to Expect in North Sulawesi in September

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

Temperatures

The average maximum daytime temperatures vary from warm in Modisi at 28°C (82°F) to very warm in Siladen Island at 32°C (90°F). Nighttime temperatures generally drop to 21°C (70°F) in Siladen Island and 24°C (75°F) in Modisi. The temperatures mentioned for both day and night are typical averages. However some days might get even hotter. It's best to stay prepared by wearing cloths suitable for the warmth.

To learn more about the conditions in specific areas of North Sulawesi, Indonesia, check out the map below.

Precipitation

In September, precipitation varies across different areas. From low rainfall in Siladen Island with an average of 22 mm (0.9 in) to heavy rainfall in Tomohon with 175 mm (6.9 in).

Average sunshine

Sunshine is moderately available across various locations. In Manado, you can expect around 174 hours of sunlight in September, which gives a pleasant combination of sun and shade. For those who want maximum sunshine, our weather planner can point you toward the sunniest places on Earth.

Explore North Sulawesi by month

Pick a month to see the average temperature, rainfall and sunshine in North Sulawesi — and find the best time to visit. (based on Manado)

Best Places to Visit in North Sulawesi in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across North Sulawesi.

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).

Popular Destinations in North Sulawesi

What is the weather like in September for some of the most popular destinations in North Sulawesi, Indonesia?

Temperature range in North Sulawesi (September)

Precipitation variation in North Sulawesi (September)

Manado

In September Manado generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 24°C (75°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

August
September
October
Max temperature
30°C (86°F)
31°C (88°F)
31°C (88°F)
Min temperature
24°C (75°F)
24°C (75°F)
25°C (77°F)
Monthly sun hours
211 hours
174 hours
174 hours
Monthly rainfall
150 mm (5.9 in)
169 mm (6.7 in)
248 mm (9.8 in)
Monthly rainy days
11 days
10 days
11 days
Weather conditions

Bunaken

In September Bunaken generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and high monthly rainfall. So on average the conditions are tolerable that month.

August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
26°C (79°F)
26°C (79°F)
26°C (79°F)
Monthly sun hours
211 hours
174 hours
174 hours
Monthly rainfall
113 mm (4.4 in)
125 mm (4.9 in)
192 mm (7.6 in)
Monthly rainy days
11 days
10 days
11 days
Weather conditions

Bitung

In September Bitung generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 25°C (77°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
211 hours
174 hours
174 hours
Monthly rainfall
94 mm (3.7 in)
93 mm (3.7 in)
154 mm (6.1 in)
Monthly rainy days
11 days
10 days
11 days
Weather conditions

Tomohon

In September Tomohon generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
23°C (73°F)
23°C (73°F)
23°C (73°F)
Monthly sun hours
211 hours
174 hours
174 hours
Monthly rainfall
154 mm (6.1 in)
175 mm (6.9 in)
253 mm (10 in)
Monthly rainy days
12 days
11 days
12 days
Weather conditions

Wori

In September Wori generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 25°C (77°F) and high monthly rainfall. So on average the conditions are tolerable that month.

August
September
October
Max temperature
30°C (86°F)
31°C (88°F)
30°C (86°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
211 hours
174 hours
174 hours
Monthly rainfall
115 mm (4.5 in)
127 mm (5 in)
200 mm (7.9 in)
Monthly rainy days
10 days
9 days
11 days
Weather conditions

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

In our records: Indonesia September extremes

Notable September records observed across cities in Indonesia in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the coldest September daytime high in Indonesia was 18°C (64°F) in Bandung on September 23, 2003.

Popular cities in September

Day & night temperatures, rainfall and average weather in North Sulawesi in September.

City Weather Day temp Night temp Rainfall
Manado 31°C (88°F) 24°C (75°F) 169 mm (6.7 in)
Bunaken 30°C (86°F) 26°C (79°F) 125 mm (4.9 in)
Bitung 30°C (86°F) 25°C (77°F) 93 mm (3.7 in)
Tomohon 30°C (86°F) 23°C (73°F) 175 mm (6.9 in)
Wori 31°C (88°F) 25°C (77°F) 127 mm (5 in)
Tanahwangko 30°C (86°F) 24°C (75°F) 160 mm (6.3 in)

North Sulawesi weather in September: frequently asked questions

What is the weather like in North Sulawesi, Indonesia in September?

September in North Sulawesi, Indonesia brings unpleasant weather. In Manado, daytime temperatures are typically around 31°C (88°F) and nighttime lows hover near 24°C (75°F).

What is the average temperature in North Sulawesi, Indonesia in September?

Average temperatures in North Sulawesi, Indonesia during September range from a nighttime low near 24°C (75°F) to a daytime high around 31°C (88°F) in Manado.

Does North Sulawesi, Indonesia get a lot of rain in September?

Yes. September brings heavy rainfall to North Sulawesi, Indonesia, with Manado averaging around 169 mm (6.7 in). Expect frequent showers and pack accordingly.

Is September a Good Time to Visit North Sulawesi, Indonesia?

We consider September to be one of the best times to travel to North Sulawesi, Indonesia. Typically, the climate in Manado is tolerable.

Generally speaking, August and September provide unpleasant weather in Manado.

Interested in more climate information?

We have much more information about the climate in North Sulawesi.

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.

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