Our verdict
The best time to visit Port Moresby is May-October
During the warmer months, temperatures in Port Moresby can rise to a maximum of 32℃ (90℉). In the winter, temperatures can get down to 20℃ (68℉) around August.
If you’re keen to see the sights of Port Moresby during the day, the sun stays up the longest around December. On average it rains the most days in March, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.
Learn everything you need to know to help you decide when to go to Port Moresby below, and don’t forget to use the awesome travel tools we know and love to help you find the best deals and make booking your vacation a breeze!
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Port Moresby seasons
Before you continue, it’s important to know when the seasons are in Port Moresby as they might be different to yours depending on where in the world you’re travelling from. Port Moresby is in the Southern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | December to February |
| Autumn/fall | March to May |
| Winter | June to August |
| Spring | September to November |
Average temperatures in Port Moresby
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Port Moresby for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Port Moresby climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Port Moresby for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Port Moresby in January
- Average temperature: 27℃ (80℉)
- Average high temperature: 30℃ (86℉)
- Average low temperature: 25℃ (76℉)
- Average humidity: 73%
- Average sunny days: 6 days
- Average rainfall: 156mm (6") over 23 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in January, make sure you pack t-shirts and light clothing.
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Port Moresby in February
- Average temperature: 27℃ (80℉)
- Average high temperature: 30℃ (85℉)
- Average low temperature: 24℃ (76℉)
- Average humidity: 73%
- Average sunny days: 6 days
- Average rainfall: 125mm (5") over 21 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in February, make sure you pack t-shirts and light clothing.
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Port Moresby in March
- Average temperature: 27℃ (80℉)
- Average high temperature: 29℃ (85℉)
- Average low temperature: 24℃ (76℉)
- Average humidity: 77%
- Average sunny days: 5 days
- Average rainfall: 203mm (8") over 25 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in March, make sure you pack t-shirts and light clothing.
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Port Moresby in April
- Average temperature: 26℃ (80℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 24℃ (76℉)
- Average humidity: 79%
- Average sunny days: 5 days
- Average rainfall: 134mm (5") over 24 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in April, make sure you pack t-shirts and light clothing.
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Port Moresby in May
- Average temperature: 26℃ (79℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 24℃ (75℉)
- Average humidity: 80%
- Average sunny days: 7 days
- Average rainfall: 110mm (4") over 22 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in May, make sure you pack t-shirts and light clothing.
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Port Moresby in June
- Average temperature: 25℃ (78℉)
- Average high temperature: 28℃ (83℉)
- Average low temperature: 24℃ (74℉)
- Average humidity: 80%
- Average sunny days: 9 days
- Average rainfall: 66mm (3") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in June, make sure you pack t-shirts and light clothing.
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Port Moresby in July
- Average temperature: 25℃ (77℉)
- Average high temperature: 28℃ (82℉)
- Average low temperature: 23℃ (73℉)
- Average humidity: 78%
- Average sunny days: 15 days
- Average rainfall: 32mm (1") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in July, make sure you pack t-shirts and light clothing.
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Port Moresby in August
- Average temperature: 25℃ (76℉)
- Average high temperature: 28℃ (82℉)
- Average low temperature: 22℃ (72℉)
- Average humidity: 79%
- Average sunny days: 12 days
- Average rainfall: 64mm (3") over 16 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in August, make sure you pack t-shirts and light clothing.
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Port Moresby in September
- Average temperature: 25℃ (77℉)
- Average high temperature: 28℃ (83℉)
- Average low temperature: 23℃ (73℉)
- Average humidity: 78%
- Average sunny days: 8 days
- Average rainfall: 82mm (3") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in September, make sure you pack t-shirts and light clothing.
Port Moresby in October
- Average temperature: 26℃ (79℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 23℃ (74℉)
- Average humidity: 78%
- Average sunny days: 9 days
- Average rainfall: 110mm (4") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in October, make sure you pack t-shirts and light clothing.
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Port Moresby in November
- Average temperature: 27℃ (80℉)
- Average high temperature: 30℃ (86℉)
- Average low temperature: 24℃ (75℉)
- Average humidity: 77%
- Average sunny days: 9 days
- Average rainfall: 88mm (3") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in November, make sure you pack t-shirts and light clothing.
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Port Moresby in December
- Average temperature: 27℃ (81℉)
- Average high temperature: 30℃ (86℉)
- Average low temperature: 24℃ (76℉)
- Average humidity: 75%
- Average sunny days: 7 days
- Average rainfall: 106mm (4") over 22 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Port Moresby in December, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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