Papua New Guinea weather in September

Are you planning a trip to Papua New Guinea in September and wondering what kind of weather to expect? This page has all the details you need.

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

Weather in Papua New Guinea varies in September, with warm temperatures and precipitation ranging from moderate to heavy.

The average maximum temperatures are warm and range from 22°C (72°F) in Mount Hagen to 30°C (85°F) in Port Moresby. Nighttime temperatures generally drop to 23°C (74°F) in Port Moresby and 12°C (54°F) in Mount Hagen. 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 varies from moderate rainfall in Port Moresby with an average of 66mm (2.6 inches) to heavy rainfall in Erave with 516mm (20 inches). It is also generally a sunny time of year with an average of 215 hours of sunshine in Port Moresby during the entire month.

For more details on the yearly weather and climate conditions, visit our Papua New Guinea climate page. To learn more about the weather conditions in specific areas of Papua New Guinea in September, check out the map below.

Where to go in Papua New Guinea in September

Find the average weather conditions in September for the most popular destinations in Papua New Guinea on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

Popular destinations in Papua New Guinea

What is the weather like in September for the 5 most popular destinations in Papua New Guinea?

Average weather in Port Moresby

In September Port Moresby generally has high temperatures with maximum daytime temperatures around 30°C (85°F), minimum nighttime temperatures around 23°C (74°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

Port Moresby
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
29°C / 84°F 
23°C / 73°F 
225 hours 
49mm / 1.9" 
6 days 
30°C / 85°F 
23°C / 74°F 
215 hours 
66mm / 2.6" 
7 days 
October   >> October
>>  
30°C / 87°F 
24°C / 74°F 
233 hours 
86mm / 3.4" 
7 days 
Climate in Port Moresby

Average weather in Madang

In September Madang generally has high temperatures with maximum daytime temperatures around 30°C (85°F), minimum nighttime temperatures around 24°C (76°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

Madang
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
29°C / 85°F 
24°C / 76°F 
226 hours 
159mm / 6.3" 
14 days 
30°C / 85°F 
24°C / 76°F 
216 hours 
163mm / 6.4" 
14 days 
October   >> October
>>  
30°C / 85°F 
25°C / 76°F 
217 hours 
236mm / 9.3" 
19 days 
poor 
Climate in Madang

Average weather in Kokopo

In September Kokopo generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 25°C (76°F) and high monthly rainfall. So on average the conditions are pleasant that month.

Kokopo
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
28°C / 83°F 
24°C / 76°F 
161 hours 
172mm / 6.8" 
19 days 
29°C / 84°F 
25°C / 76°F 
195 hours 
156mm / 6.1" 
19 days 
October   >> October
>>  
29°C / 84°F 
25°C / 76°F 
174 hours 
170mm / 6.7" 
21 days 
Climate in Kokopo

Average weather in Lae

In September Lae generally has high temperatures with maximum daytime temperatures around 27°C (80°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Lae
Max temperature Max temp
Min temperature Min temp
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
26°C / 79°F 
22°C / 72°F 
522mm / 21" 
23 days 
poor 
27°C / 80°F 
22°C / 72°F 
483mm / 19" 
21 days 
poor 
October   >> October
>>  
27°C / 81°F 
23°C / 73°F 
505mm / 20" 
21 days 
poor 
Climate in Lae

Average weather in Mount Hagen

In September Mount Hagen generally has high temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 12°C (54°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Mount Hagen
Max temperature Max temp
Min temperature Min temp
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
22°C / 71°F 
13°C / 55°F 
253mm / 9.9" 
22 days 
22°C / 72°F 
12°C / 54°F 
299mm / 12" 
22 days 
poor 
October   >> October
>>  
22°C / 72°F 
13°C / 55°F 
358mm / 14" 
22 days 
poor 
Climate in Mount Hagen

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

Is September the best time to go to Papua New Guinea?

In our opinion September is a good time to visit Papua New Guinea with commonly pleasant weather in Port Moresby. However, the weather conditions may vary depending on your destination.

On average the best time to visit Papua New Guinea is in July and August with generally perfect weather in Port Moresby. The worst months are January, February, March and April that can have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Papua New Guinea. 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 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 climate conditions. Find out where to go with our weather planner.