Port Moresby Climate by Month
Port Moresby, National Capital, Papua New Guinea
Hot all year, with rain spread through the year.
Port Moresby is hot all year, with rain spread through the year. Afternoon highs range from 84°F (29°C) in August to 91°F (33°C) in December, and July nights average 73°F (23°C). About 59 in (1499 mm) of rain falls in a typical year, with no clear rainy season. The air is humid, averaging 78% relative humidity.
- Warmest month
- 91°F(33°C)
- Average high, December
- Coldest nights
- 73°F(23°C)
- Average low, July
- Rain per year
- 59 in(1499 mm)
- No clear rainy season
- Humidity
- 78%
- Sunniest: October
Best and worst months in Port Moresby
Best for weatherJuly and August are the best time for weather in Port Moresby: highs near 84°F (29°C) and about 1.6 in (40 mm) of rain a month.
Least pleasantMarch is the least pleasant month: it's the wettest, with 10 in (256 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Port Moresby weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 90°F(32°C) | 75°F(24°C) | 8.0 in(202 mm) | 77% | 5.2 |
| FebFebruary | 90°F(32°C) | 74°F(24°C) | 6.3 in(160 mm) | 78% | 5.2 |
| MarMarch | 89°F(32°C) | 74°F(24°C) | 10 in(256 mm) | 79% | 4.9 |
| AprApril | 88°F(31°C) | 74°F(23°C) | 5.5 in(139 mm) | 82% | 4.7 |
| MayMay | 87°F(31°C) | 74°F(24°C) | 4.5 in(114 mm) | 81% | 4.6 |
| JunJune | 86°F(30°C) | 73°F(23°C) | 3.5 in(90 mm) | 81% | 4.4 |
| JulJulyBest | 84°F(29°C) | 73°F(23°C) | 1.4 in(36 mm) | 78% | 4.6 |
| AugAugustBest | 84°F(29°C) | 73°F(23°C) | 1.7 in(44 mm) | 75% | 5.0 |
| SepSeptember | 86°F(30°C) | 73°F(23°C) | 3.6 in(92 mm) | 76% | 5.2 |
| OctOctober | 88°F(31°C) | 74°F(23°C) | 4.8 in(123 mm) | 75% | 5.8 |
| NovNovember | 90°F(32°C) | 74°F(23°C) | 3.7 in(95 mm) | 78% | 5.7 |
| DecDecember | 91°F(33°C) | 75°F(24°C) | 5.8 in(148 mm) | 76% | 5.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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