Temperatures in September
It's warm in September in Port Moresby with an average temperature of 29°C. Temperatures this month range from a low of 28°C to a high of 30°C. At night, you can expect temperatures between 20°C and 21°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Port Moresby in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Port Moresby with hot temperatures, averaging around 30°C during the day and nights close to 21°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Mid-September
By mid-September, the average daytime temperature drops to around 29°C, with nights close to 21°C. The chance of precipitation is high during this period.
Temperatures vary between day and night, so it’s smart to wear layers.
End of September
By the end of September, the average daytime temperature in Port Moresby will be around 30°C, with nights close to 21°C. There’s a significant chance of many days with precipitation.
Discover cheap trips to Port Moresby 
Precipitation in September
In September, there is an average of 182 mm of precipitation, spread over 13 days. The wind speed is around 5 Bft, mostly coming from the Southeast.
The average precipitation chance is 44% per day this month.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Port Moresby. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Port Moresby in September |
London | ||
|---|---|---|---|
 Average Temperature |
29°C | 20°C | |
 High Temp |
30°C | 22°C | |
| Low Temp |
28°C | 17°C | |
 Total Precipitation |
182 mm | 44 mm | |
| Rainy Days |
13 days | 8 days | |
August
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Port Moresby?
After some sun? Then September isn’t the best time to be in Port Moresby. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Port Moresby in September
With 34°C, Port Moresby hit the highest temperature in the last 10 years in September 2016. The lowest daytime temperature in this month was 20°C in 2018. The extreme night temperatures ranged from a low of 9°C to a high of 25°C.
Check out the climate of Port Moresby for all months and discover the best travel time
Plan your next holiday
Don’t miss the best holiday deals for Port Moresby and see what our partners have for you.
Daily Temperature in September in Port Moresby
This chart shows the average daily temperatures, both day and night, for each day in September in Port Moresby, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Port Moresby
The chart below shows the average daily precipitation in September for Port Moresby, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 13 days of rain in Port Moresby.
Daily UV Index in September in Port Moresby
This chart shows the average daily UV index in September in Port Moresby, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Port Moresby Over the Years
This chart shows the average temperature in September in Port Moresby, measured in degrees Celsius, over the past years.
Total Precipitation in September in Port Moresby Over the Years
This chart shows the average precipitation in September in Port Moresby, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Port Moresby
Click on a specific day in September for detailed info on the typical weather on that day in Port Moresby. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Port Moresby
Have you been to Port Moresby in September?
Share your weather experience in September in Port Moresby.
Average Weather in Port Moresby by Month
Click on a month below to see detailed weather info for Port Moresby. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Port Moresby for all months at once
