Papua New Guinea weather

Our guide to the weather in Papua New Guinea during September

26

Average high

6

UV Index

304mm

Monthly rainfall

81%

Humidity

We've looked at the most up-to-date weather data for Papua New Guinea, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Papua New Guinea weather in September.

How warm is it in Papua New Guinea during September?

The temperature reaches around 26℃ during the daytime in September, falling away to 19℃ at night. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Papua New Guinea during September?

On average, there will be 11 rainy days during the month, amounting to 304.4mm in total. That's a lot of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. Due to the high temperature and humidity, you might expect lots of thunderstorms, however they're actually fairly infrequent at this time of year. On average, September will see just 1 days that produce a storm.

Is it windy in Papua New Guinea during September?

No - there is very light air movement in September so conditions should be calm with light breezes at times.

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Weather in Papua New Guinea

Our month-by-month guide to the weather and climate in Papua New Guinea

28.8

Papua New Guinea weather in

January
29.0

Papua New Guinea weather in

February
28.5

Papua New Guinea weather in

March
27.6

Papua New Guinea weather in

April
27.1

Papua New Guinea weather in

May
26.2

Papua New Guinea weather in

June
25.3

Papua New Guinea weather in

July
25.6

Papua New Guinea weather in

August
26.0

Papua New Guinea weather in

September
27.2

Papua New Guinea weather in

October
27.9

Papua New Guinea weather in

November
28.4

Papua New Guinea weather in

December