The climate in Port Moresby during May can be summarized as hot, humid and damp.
May is in the fall / autumn in Port Moresby and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 30°C (85°F), whilst at night 24°C (74°F) is normal.
Daytime temperature | 29.6°C 85.2°F |
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Nightly temperature | 23.5°C 74.2°F |
Average temperature | 26.5°C 79.7°F |
Daily sunshine | 6.3 hrs |
Avg rainfall | 107 mm 4.2 ins |
Rainy days | 11 days |
Sea temperature | 27.8°C 82°F |
Humidity | 80% |
Windspeed | 17.3kph 11 mph |
On average May is the 6th wettest month of the year in Port Moresby with around 107mm 4.2 inches of rain making it a damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.3 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Port Moresby in May 2025.
Hottest month: | December | 31.3°C 88.3°F |
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Driest month: | July | 40mm 1.6ins |
Sunniest month: | October | 7.6hrs |
Coldest month: | July | 28.6°C 83.5°F |
Wettest month: | March | 248mm 9.8ins |