Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
Weather Guide
Port Moresby, Papua New Guinea Average Monthly Weather
Weather score67Good annual avg
Best months: August, July, September
Across the year, average daytime temperatures are around 31°C, sunshine averages 6.2h per day, and rainfall totals about 1202mm. Sea temperatures average 28°C across the year.
Annual weather
Annual averages
Temp
31°C
Rain
1202mm
Annual total
Sun
6.2h
Sea
28°C
Weather score
67
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 27mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Swimmable
Sea temperatures average 26°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Port Moresby, Papua New Guinea with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July29°C average high
July is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsJanuary to April and October to December
This stretch sets the upper range for average daytime heat.
Rain
July27mm average rain
July is one of Port Moresby's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsMay to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July5.8 hours average sun
July is below Port Moresby's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsAugust to November
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July26°C average sea
July is below Port Moresby's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJanuary to April and December
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
July74 weather score
July is one of Port Moresby's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsMay to November
These months have the strongest weather score in the monthly averages.
