Papua Weather in September

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

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Jayapura Biak Merauke

Planning a journey to Papua, Indonesia this September and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Papua in September

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

Temperatures

You can expect very warm maximum daytime temperatures of around 30°C (86°F) and nighttime temperatures around 25°C (77°F) in Jayapura. The temperatures cited for both day and night represent usual averages, but it's possible some days could be hotter. It's advisable to dress accordingly to handle the heat.

For specific regional insights in Papua, Indonesia, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Merauke with an average of 37 mm (1.5 in) to heavy rainfall in Jayapura with 210 mm (8.3 in).

Explore Papua by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best Places to Visit in Papua in September

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

Conditions Temperatures Precipitation
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 Papua

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

Temperature range in Papua (September)

Precipitation variation in Papua (September)

Jayapura

In September Jayapura generally has very high temperatures with maximum daytime temperatures around 30°C (86°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 »
August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
31°C (88°F)
Min temperature
24°C (75°F)
25°C (77°F)
25°C (77°F)
Monthly rainfall
220 mm (8.7 in)
210 mm (8.3 in)
203 mm (8 in)
Monthly rainy days
13 days
14 days
15 days
Weather conditions
poor
poor
poor
Climate in Jayapura →

Biak

In September Biak generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 26°C (79°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
29°C (84°F)
29°C (84°F)
30°C (86°F)
Min temperature
26°C (79°F)
26°C (79°F)
26°C (79°F)
Monthly sun hours
121 hours
120 hours
118 hours
Monthly rainfall
222 mm (8.7 in)
208 mm (8.2 in)
195 mm (7.7 in)
Monthly rainy days
20 days
18 days
18 days
Weather conditions
unpleasant
unpleasant
unpleasant
Climate in Biak →

Merauke

In September Merauke generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 24°C (75°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
29°C (84°F)
29°C (84°F)
30°C (86°F)
Min temperature
24°C (75°F)
24°C (75°F)
25°C (77°F)
Monthly rainfall
34 mm (1.3 in)
37 mm (1.5 in)
69 mm (2.7 in)
Monthly rainy days
7 days
7 days
6 days
Weather conditions
perfect
perfect
pleasant
Climate in Merauke →

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

City Weather Day temp Night temp Rainfall
Jayapura 30°C (86°F) 25°C (77°F) 210 mm (8.3 in)
Biak 29°C (84°F) 26°C (79°F) 208 mm (8.2 in)
Merauke 29°C (84°F) 24°C (75°F) 37 mm (1.5 in)

Papua weather in September: frequently asked questions

What is the weather like in Papua, Indonesia in September?

In September, Papua, Indonesia generally has poor weather conditions. Jayapura sees daytime temperatures near 30°C (86°F), with nights cooling to roughly 25°C (77°F).

What is the average temperature in Papua, Indonesia in September?

In Jayapura, the average daytime high in September is 30°C (86°F), while nighttime temperatures drop to around 25°C (77°F).

Does Papua, Indonesia get a lot of rain in September?

Rainfall in Papua, Indonesia peaks during September. Jayapura averages roughly 210 mm (8.3 in), so frequent and sometimes heavy showers are the norm.

Is September a Good Time to Visit Papua, Indonesia?

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

Generally speaking, provide poor weather in Jayapura.

Interested in more climate information?

We have much more information about the climate in Papua.

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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