See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:03
Sunrise
18:03
Sunset
Moon
Waxing Gibbous
13:36
Moonrise
02:34
Moonset
Daily Forecast
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Air Quality Data Available
Upgrade to access real-time air quality data for Port Moresby.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Port Moresby.
View stargazing scoreWeather in Port Moresby today, September 21, 2026
Port Moresby is set for a fine, sunny day on September 21, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside. Morning skies stay relatively clear, holding cloud close to 41% near 09:00. The early part of the day favours being outside.
Temperatures climb from an overnight low near 24°C toward a daytime high of about 27°C. The air stays humid, with relative humidity between 67% and 77% and the peak around 13:00. Expect gentle winds, highest near 13:00 at 9.9 km/h.
Through the afternoon skies look more workable, with cloud near 54% around 23:00. Later outdoor plans have a clearer window than the morning may have suggested. Expect visibility around 16.1 km. The sun rises at 06:03 and sets at 18:03, for a total of 12 hours 0 minutes of sunlight today.
In short, September 21, 2026 looks like a fine day in Port Moresby for being outside, peaking around 27°C.
Frequently asked questions about weather in Port Moresby
How warm does it get in Port Moresby?
The warmest month in Port Moresby is December, with average high temperatures of 30°C. The average temperature during this period is around 27°C.
How cold does it get in Port Moresby?
The coldest month in Port Moresby is August, with average low temperatures of 23°C. The average temperature during this period is around 25°C.
What is the wettest time of year in Port Moresby?
The wettest month in Port Moresby is March, with an average of 281mm of precipitation.
What is the driest time of year in Port Moresby?
The driest month in Port Moresby is July, with an average of 43mm of precipitation.
