Weather in Port Moresby in May 2026
Average weather
Average temperature in Port Moresby in May
The expected average maximum temperature in May is +29°C with a maximum of +31°C and a minimum of +23°C.
The average maximum temperature goes down 12% by the end of the month, compared with the beginning of the month, from +31°C to +30°C.
Is Port Moresby warm or cold in May?
Port Moresby is typically warm in May.
Maximum temperatures go up compared to the previous month from +29°C to +29°C. The minimum temperature also goes up from +24°C to +24°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Port Moresby:
Climate in Port Moresby in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +29°C | +29°C | +28°C | ||||
| Min. temperature | ||||||
| +20°C | +19°C | +18°C | ||||
| Max. temperature | ||||||
| +32°C | +33°C | +31°C | ||||
| Rainfall | ||||||
| 169 mm | 88 mm | 45 mm | ||||
| Wind | ||||||
| 1 m/s | 2 m/s | 3 m/s | ||||
| Humidity | ||||||
| 85% | 84% | 83% | ||||
| Air pressure | ||||||
| 1008 HPa | 1009 HPa | 1010 HPa | ||||
| Sunny days | ||||||
| 1 | 2 | 2 | ||||
| Cloudy days | ||||||
| 4 | 9 | 12 | ||||
| Rainy days | ||||||
| 25 | 20 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May weather is still as ok as in April. The temperature levels stay the same in the area of +29°C for average maximum temperature during the day. As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 169 mm to 88 mm. It feels drier, as humidity decreases from 85% to 84%. Winds are stronger in comparison to April, going up from 1 m/s to 2 m/s on average. The good news is there are likely to be more sunny days in May, from 1 to 2.
But maybe it is worth considering traveling in June as the weather gets better.
Wind
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Port Moresby is gradually increasing during May, going from 2 m/s to 5 m/s over the course of the month.
Rain
How was the weather last May in Port Moresby?
Climate Change over Years
The climate in Port Moresby in May has not changed much over the last 43 years.
The average temperature was the lowest in 1982 (+28°C) and the highest in 2024 (+30°C). The driest year was 1997 with only 892 mm of rainfall, and the wettest year was 2006 with 1873 mm.
FAQ
Is May a good time to visit Port Moresby?
Can you sunbathe in Port Moresby in May?
Is Port Moresby rainy in May?
Is it sunny in Port Moresby in May?
Other cities in Papua New Guinea
Monthly weather in Port Moresby
Source of the data
For this page, we’ve looked at the typical weather in Port Moresby, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
