West Kalimantan Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in West Kalimantan, Indonesia in September.

Planning a getaway to West Kalimantan, Indonesia this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in West Kalimantan in September

West Kalimantan, Indonesia is a region in Indonesia. September in West Kalimantan generally has very warm temperatures, with precipitation levels ranging from high to heavy.

Temperatures

The average maximum temperatures are very warm and range from 30°C (86°F) in Ketapang to 33°C (91°F) in Pontianak. Nighttime temperatures generally drop to 24°C (75°F) in Pontianak and 25°C (77°F) in Ketapang. While the given temperatures for day and night are typical, there may be days that feel warmer. Make sure you're dressed in a way that keeps you cool and comfortable.

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

Precipitation

In September, precipitation varies across different areas. From high rainfall in Ketapang with an average of 126 mm (5 in) to heavy rainfall in Pontianak with 243 mm (9.6 in).

Average sunshine

Most areas see decent amounts of sunshine this month. Pontianak gets around 165 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

Explore West Kalimantan by month

Pick a month to see the average temperature, rainfall and sunshine in West Kalimantan — and find the best time to visit. (based on Pontianak)

Best Places to Visit in West Kalimantan in September

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

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 West Kalimantan

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

Temperature range in West Kalimantan (September)

Precipitation variation in West Kalimantan (September)

Pontianak

In September Pontianak generally has very high temperatures with maximum daytime temperatures around 33°C (91°F), minimum nighttime temperatures around 24°C (75°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
33°C (91°F)
33°C (91°F)
32°C (90°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly sun hours
202 hours
165 hours
167 hours
Monthly rainfall
173 mm (6.8 in)
243 mm (9.6 in)
373 mm (15 in)
Monthly rainy days
12 days
13 days
19 days
Weather conditions

Singkawang

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

August
September
October
Max temperature
31°C (88°F)
31°C (88°F)
30°C (86°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly rainfall
170 mm (6.7 in)
219 mm (8.6 in)
316 mm (12 in)
Monthly rainy days
15 days
16 days
22 days
Weather conditions

Ketapang

In September Ketapang generally has very high temperatures with maximum daytime temperatures around 30°C (86°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)
30°C (86°F)
30°C (86°F)
Min temperature
25°C (77°F)
25°C (77°F)
26°C (79°F)
Monthly rainfall
75 mm (3 in)
126 mm (5 in)
253 mm (10 in)
Monthly rainy days
10 days
11 days
17 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in West Kalimantan, 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 West Kalimantan in September.

City Weather Day temp Night temp Rainfall
Pontianak 33°C (91°F) 24°C (75°F) 243 mm (9.6 in)
Singkawang 31°C (88°F) 25°C (77°F) 219 mm (8.6 in)
Ketapang 30°C (86°F) 25°C (77°F) 126 mm (5 in)

West Kalimantan weather in September: frequently asked questions

What is the weather like in West Kalimantan, Indonesia in September?

West Kalimantan, Indonesia typically experiences poor weather in September, part of the season. Daytime highs in Pontianak average around 33°C (91°F), and temperatures drop to about 24°C (75°F) at night.

What is the average temperature in West Kalimantan, Indonesia in September?

Daytime temperatures in Pontianak peak at roughly 33°C (91°F) in September, dropping to about 24°C (75°F) overnight.

Does West Kalimantan, Indonesia get a lot of rain in September?

Rainfall in West Kalimantan, Indonesia peaks during September. Pontianak averages roughly 243 mm (9.6 in), so frequent and sometimes heavy showers are the norm.

Is September a Good Time to Visit West Kalimantan, Indonesia?

In our opinion, September may not be the ideal time to visit West Kalimantan, Indonesia due to the typically poor weather in Pontianak.

Generally speaking, the best visiting conditions can be found in offering mostly poor weather in Pontianak.

Interested in more climate information?

We have much more information about the climate in West Kalimantan.

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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