Port Moresby, Papua New Guinea Weather
Port Moresby hourly forecast: next 24 hours
Today's high of 81°F (27°C) is about 3°F (2°C) below the typical August high of 84°F (29°C).
Current conditions in detail
Port Moresby weather tomorrow (Saturday, August 8)
Tomorrow in Port Moresby looks patchy rain nearby, with a high of 82° and an overnight low of 73°. Precipitation chance is modest at 32%. Winds top out near 20 mph, and the UV index reaches 10 (very high).
Port Moresby 14-day forecast
About the weather in Port Moresby
Port Moresby has a tropical wet-and-dry climate, marked by year-round warmth split between a rainy season and a pronounced dry season. Average daytime highs range from about 84°F (29°C) in August to around 88°F (31°C) in December, and the city records roughly 195 days of measurable precipitation a year.
Port Moresby weather: quick facts
- Hottest month: December - highs near 88°F (31°C)
- Coldest month: August - highs near 84°F (29°C)
- Record high: 95°F (35°C) · Record low: 63°F (17°C) (2015–2024)
- Wettest month: March (24 rainy days) · Sunniest: November (11.1 h sun/day)
- Climate type: tropical wet-and-dry - year-round warmth split between a rainy season and a pronounced dry season
Temperatures through the year
The warmest stretch of the year centers on December. Highs average 88°F (31°C) and overnight lows stay near 76°F (24°C). The coolest month is August, with typical highs of 84°F (29°C) and lows around 74°F (23°C). Based on 2015–2024 weather data, temperatures have reached as high as 95°F (35°C) and dropped as low as 63°F (17°C).
Rain, sun and snow
March is usually the wettest month. It brings about 11.7 inches (297 mm) of rain over 24 days, while August is the driest. November brings the most sunshine, averaging 11.1 hours of sun a day.
Season by season
September through November
September through November in Port Moresby runs hot, with daytime highs averaging 86°F (30°C) and nights around 75°F (24°C); expect showers on roughly 43 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
December through February
December through February in Port Moresby is hot, with daytime highs averaging 87°F (31°C) and nights around 76°F (24°C); expect showers on roughly 60 days across the season.
March through May
March through May in Port Moresby is hot, with daytime highs averaging 86°F (30°C) and nights around 75°F (24°C); expect showers on roughly 61 days across the season.
June through August
June through August in Port Moresby runs hot, with daytime highs averaging 84°F (29°C) and nights around 74°F (24°C); expect showers on roughly 30 days across the season.
Average temperatures in Port Moresby by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 87° | 76° | 21 | 10.7 in | 9.2 h/day | 82% |
| February | 87° | 76° | 20 | 8.1 in | 9.4 h/day | 82% |
| March | 86° | 75° | 24 | 11.7 in | 8.9 h/day | 85% |
| April | 85° | 75° | 22 | 8.4 in | 9.2 h/day | 87% |
| May | 85° | 76° | 14 | 4.8 in | 9.9 h/day | 85% |
| June | 84° | 75° | 11 | 2.3 in | 10.1 h/day | 82% |
| July | 84° | 74° | 10 | 1.9 in | 10.2 h/day | 80% |
| August | 84° | 74° | 10 | 1.8 in | 10.3 h/day | 79% |
| September | 85° | 74° | 12 | 2.6 in | 10.4 h/day | 79% |
| October | 86° | 75° | 16 | 4.1 in | 10.8 h/day | 82% |
| November | 87° | 76° | 15 | 3.6 in | 11.1 h/day | 81% |
| December | 88° | 76° | 20 | 6.7 in | 10.1 h/day | 82% |