Port Moresby Weather and Climate: A Comprehensive Guide
Port Moresby has pretty similar weather over the course of the year.
It also has a relatively rainy climate with high levels of precipitation.
Let’s explore the climate details in depth to provide you with a complete overview.
Average maximum day and minimum night temperature
The temperature in Port Moresby remains steady throughout the year, providing a consistently very warm climate. On average, daytime temperatures range from a very warm 31°C in December to a comfortable 29°C in August.
Nighttime temperatures can drop, with average lows reaching 23°C in August. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Port Moresby has a relatively rainy climate with high precipitation levels, averaging 1719 mm of rainfall annually. The seasons in Port Moresby, bring significant changes in precipitation. The wettest month, March, receives heavy rainfall, with an average of 294 mm of precipitation. This rainfall is distributed across 19 rainy days. In contrast, the driest month, July, experiences much less rainfall, totaling 42 mm over 7 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Port Moresby Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Port Moresby enjoys sunny spells year-round. November sees up to 8.1 hours of daily sunshine, perfect for a sunny trip. February, the least sunny month, still offers a generous 5.2 hours of sun despite this cloudier time of the year. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average water temperature
The mean water temperature over the year ranges from 26°C in July to 29°C in January.
Water temperature over the year
Average humidity
The relative humidity is high throughout the year in Port Moresby.
The city experiences its highest humidity in April, reaching 81%. In August, the humidity drops to its lowest level at 75%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
broken clouds and thunder partly cloudy and thunder broken clouds and rainForecast for Port Moresby
6 m/s
5 m/s
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Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Port Moresby in Papua New Guinea
Port Moresby has high temperatures year round ranging between 29°C and 31°C.Other facts from our historical weather data:
Rainy season in Port Moresby occurs in the months of January, February, March, April and December.
December has an average maximum temperature of 31°C and is the hottest month of the year.
The coolest month is August with an average maximum temperature of 29°C.
March tops the wettest month list with 294 mm of rainfall.
July is the driest month with 42 mm of precipitation.
November is the sunniest month with an average of 244 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
