National Capital (Port Moresby)
September
Weather in National Capital for September 2026
Your guide to National Capital weather in September - trends and predictions
In general, the average temperature in National Capital at the beginning of September is 28.6 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 28.7 °C by the end of September.
National Capital experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 133.6 mm.
Temperatures
Rain 🌧️
6
Dry days
24
Rainy days
0
Snow days
28°/22°
Temperatures
23 km/h
Avg max wind
81 %
Avg humidity
National Capital Weather September
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Temperatures trend during September in National Capital
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September weather in National Capital day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 28° /21° | 0 mm | 7 | |
| 2 Sept. |  Partly cloudy | 28° /21° | 9.3 mm | 7 | |
| 3 Sept. |  Cloudy | 29° /21° | 2.2 mm | 7 | |
| 4 Sept. | Cloudy | 29° /22° | 0.1 mm | 7 | |
| 5 Sept. | Light rain shower | 28° /22° | 0.7 mm | 7 | |
| 6 Sept. | Patchy rain possible | 29° /22° | 1.1 mm | 7 | |
| 7 Sept. | Light rain shower | 29° /22° | 3.2 mm | 7 | |
| 8 Sept. | Patchy rain possible | 30° /22° | 0.1 mm | 7 | |
| 9 Sept. | Light rain shower | 29° /22° | 2.1 mm | 7 | |
| 10 Sept. | Light rain shower | 29° /22° | 5.8 mm | 7 | |
| 11 Sept. | Patchy rain possible | 28° /22° | 6 mm | 7 | |
| 12 Sept. | Light rain shower | 28° /22° | 15.5 mm | 7 | |
| 13 Sept. |  Overcast | 27° /22° | 6.5 mm | 7 | |
| 14 Sept. | Light rain shower | 28° /22° | 6 mm | 7 | |
| 15 Sept. | Light rain shower | 28° /22° | 1.9 mm | 7 | |
| 16 Sept. | Partly cloudy | 27° /21° | 3.4 mm | 7 | |
| 17 Sept. | Partly cloudy | 27° /21° | 1.4 mm | 7 | |
| 18 Sept. | Cloudy | 29° /22° | 0.7 mm | 7 | |
| 19 Sept. | Cloudy | 28° /22° | 9 mm | 7 | |
| 20 Sept. | Light rain shower | 29° /23° | 4.2 mm | 7 | |
| 21 Sept. | Patchy rain possible | 29° /23° | 15.4 mm | 7 | |
| 22 Sept. | Patchy rain possible | 27° /23° | 2.6 mm | 6 | |
| 23 Sept. | Light rain shower | 28° /22° | 2.3 mm | 7 | |
| 24 Sept. | Light rain shower | 29° /23° | 2.1 mm | 7 | |
| 25 Sept. | Light rain shower | 28° /22° | 3.2 mm | 7 | |
| 26 Sept. | Light rain shower | 29° /23° | 6.9 mm | 7 | |
| 27 Sept. |  Moderate or heavy rain shower | 28° /23° | 8 mm | 7 | |
| 28 Sept. | Light rain shower | 29° /22° | 11.6 mm | 7 | |
| 29 Sept. | Patchy rain possible | 29° /23° | 0.5 mm | 7 | |
| 30 Sept. | Patchy rain possible | 29° /22° | 1.7 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for National Capital in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the National Capital forecast closer to your planned date for the most up-to-date weather information.
Change Month
National Capital in September - FAQ
What are the expected maximum and minimum temperatures in National Capital during September?
During September, expect a variety of temperatures with highs around 28° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in National Capital during September?
Significant rainfall exceeding 133.6 mm is expected in National Capital during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in National Capital during September?
The average wind speed in National Capital during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in National Capital
Explore the daily rainfall trends and prepare for National Capitals September weather 💧
Typically, National Capital has 24 rainy days in September with a total of 133.6 mm of rainfall.
UV exposure in National Capital during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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