Papua Region Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Papua Region, Papua New Guinea in September.

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Port Moresby Alotau Tufi

Planning a journey to Papua Region, Papua New Guinea 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 Region in September

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

Temperatures

The average maximum temperatures are warm and range from 28°C (82°F) in Tufi to 30°C (86°F) in Port Moresby. Nighttime temperatures generally drop to 23°C (73°F) in Port Moresby and 24°C (75°F) in Tufi. The temperatures mentioned for daytime and nighttime are general averages. However there can be days that surpass these temperatures. So equip yourself with clothing that can handle the potential heat.

To learn more about the conditions in specific areas of Papua Region, Papua New Guinea, check out the map below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Port Moresby with an average of 66 mm (2.6 in) to heavy rainfall in Alotau with 215 mm (8.5 in).

Average sunshine

Several destinations enjoy plenty of sunshine this month. Port Moresby sees close to 215 hours of sunlight, making it great for sun lovers.

Explore Papua Region by month

Pick a month to see the average temperature, rainfall and sunshine in Papua Region — and find the best time to visit. (based on Port Moresby)

January31°C (88°F) February31°C (88°F) March30°C (86°F) April30°C (86°F) May30°C (86°F) June30°C (86°F) This monthJuly29°C (84°F) August29°C (84°F) September30°C (86°F) October30°C (86°F) November31°C (88°F) December31°C (88°F)
Best Time to Visit Papua Region →

Best Places to Visit in Papua Region in September

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

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 Region

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

Temperature range in Papua Region (September)

Precipitation variation in Papua Region (September)

Port Moresby

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

« August
September
October »
August
September
October
Max temperature
29°C (84°F)
30°C (86°F)
30°C (86°F)
Min temperature
23°C (73°F)
23°C (73°F)
24°C (75°F)
Monthly sun hours
225 hours
215 hours
233 hours
Monthly rainfall
49 mm (1.9 in)
66 mm (2.6 in)
86 mm (3.4 in)
Monthly rainy days
6 days
7 days
7 days
Weather conditions
perfect
pleasant
pleasant
Climate in Port Moresby →

Alotau

In September Alotau generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
27°C (81°F)
28°C (82°F)
29°C (84°F)
Min temperature
22°C (72°F)
22°C (72°F)
22°C (72°F)
Monthly rainfall
195 mm (7.7 in)
215 mm (8.5 in)
228 mm (9 in)
Monthly rainy days
13 days
14 days
14 days
Weather conditions
tolerable
unpleasant
unpleasant
Climate in Alotau →

Tufi

In September Tufi generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 24°C (75°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
27°C (81°F)
28°C (82°F)
28°C (82°F)
Min temperature
24°C (75°F)
24°C (75°F)
25°C (77°F)
Monthly rainfall
115 mm (4.5 in)
141 mm (5.6 in)
162 mm (6.4 in)
Monthly rainy days
12 days
13 days
14 days
Weather conditions
pleasant
pleasant
pleasant
Climate in Tufi →

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

In our records: Papua New Guinea September extremes

Notable September records observed across cities in Papua New Guinea in our climate database (1988 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the coldest September daytime high in Papua New Guinea was 17°C (63°F) in Goroka on September 22, 2025.

Popular cities in September

Day & night temperatures, rainfall and average weather in Papua Region in September.

City Weather Day temp Night temp Rainfall
Port Moresby 30°C (86°F) 23°C (73°F) 66 mm (2.6 in)
Alotau 28°C (82°F) 22°C (72°F) 215 mm (8.5 in)
Tufi 28°C (82°F) 24°C (75°F) 141 mm (5.6 in)

Papua Region weather in September: frequently asked questions

What is the weather like in Papua Region, Papua New Guinea in September?

In September, Papua Region, Papua New Guinea generally has tolerable weather conditions. Port Moresby sees daytime temperatures near 30°C (86°F), with nights cooling to roughly 23°C (73°F).

What is the average temperature in Papua Region, Papua New Guinea in September?

Daytime temperatures in Port Moresby peak at roughly 30°C (86°F) in September, dropping to about 23°C (73°F) overnight.

Does Papua Region, Papua New Guinea get a lot of rain in September?

Rain is generally moderate to light in Papua Region, Papua New Guinea during September, with Port Moresby averaging close to 66 mm (2.6 in).

Is September a Good Time to Visit Papua Region, Papua New Guinea?

Given the typically pleasant weather conditions in Port Moresby, September might be a good time to visit Papua Region, Papua New Guinea.

Generally speaking, the best visiting conditions can be found in July and August offering mostly perfect weather in Port Moresby. The weather in January, February, March, April and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Papua Region.

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

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.