Port Moresby weather in August 2025

Expect 29°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Port Moresby in August. Check more long-term weather averages for Port Moresby in August before you book your next holiday to Papua New Guinea in 2025/2026.

  • 29°C maximum daytime temperature in August in Port Moresby29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 6 days with some rainfall in August in Port Moresby6
    6 days with some rainfall
  • 22°C minimum night-time temperature in August in Port Moresby22
    22°C min night temperature
  • 12 hours of daylight per day in August in Port Moresby12
    12 hours of daylight per day
  • High heat & humidity in August in Port MoresbyH
    High heat & humidity
  • 49 mm monthly rainfall in August in Port Moresby49
    49 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Port Moresby11
    11+ (Extreme) UV index
  • 25°C sea temperature in August in Port Moresby25
    25°C sea temperature

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The August weather guide for Papua New Guinea (Port Moresby) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Port Moresby in August?

Daytime temperatures usually reach 29°C in Port Moresby in August with high heat and humidity, falling to 22°C at night.

How sunny is it in Port Moresby in August?

There are normally 7 hours of bright sunshine each day in Port Moresby in August - that's 56% of daylight hours.

How warm is the sea around Port Moresby in August?

The average sea temperature around Port Moresby in August is 25°C.

Does it rain in Port Moresby in August?

There are usually 6 days with some rain in Port Moresby in August and the average monthly rainfall is 49mm.

Port Moresby August sunrise & sunset times

Browse the sunrise and sunset times for Port Moresby in August 2025. Select a month to view Port Moresby sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 06:27 18:09
Saturday, 16th August 2025 06:22 18:10
Sunday, 31st August 2025 06:14 18:09

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