Temperature
Warm by day, warm at night.
84°Ftypical September high
Typical range
September climate
September in Port Moresby
Papua New Guinea · Oceania
Warm days and some sun. Humid air is the main drawback.
Some tradeoffs
Some afternoons can feel hot.
Daytime high
84°F
Lows around 74°F
Rain
Several rainy days
Sun
11 h/day
Air feel
Very humid
Sea temp
79°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days, mostly brief and on-and-off. About 10 wet days, fewer than in most months.
33%wet-day frequency
AmountWet-day chance
Sunshine
A mix of sunshine and cloud.
10.8 hSeptember sunshine
Heat & humidity by month
Very humid air is a major factor this month.
87%September Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 85° and nights feel near 79°.
WarmHotNight hours
Clear sky
Mostly cloudy skies this month.
30%September Clear sky
Clear skyCloud
Wind pattern
September's typical breeze keeps the air from feeling as stagnant.
9 mphSeptember Breezy
Sea temperature
79°FSeptember sea temp
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 82°F, easing to about 78°F in early evening.
Avg temp Typical range
Morning81°F
Feels 85°F
Rain7%
Cloud63%
Humid airVery high
Sun intensityModerate
Midday83°F
Feels 86°F
Rain22%
Cloud69%
Humid airVery high
Sun intensityStrong
Late afternoon82°F
Feels 84°F
Rain24%
Cloud74%
Humid airVery high
Sun intensityModerate
Early evening78°F
Feels 81°F
Rain14%
Cloud74%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 86 | 77 | 9.2 | 23 | 9.6 | 81 | 85 |
| Feb | 86 | 77 | 8.4 | 21 | 9.3 | 82 | 85 |
| Mar | 85 | 76 | 11.2 | 26 | 8.9 | 84 | 85 |
| Apr | 85 | 76 | 7.0 | 22 | 9.5 | 85 | 84 |
| May | 84 | 76 | 3.7 | 13 | 10.2 | 84 | 83 |
| Jun | 83 | 75 | 2.0 | 9 | 10.0 | 84 | 81 |
| Jul | 82 | 74 | 1.2 | 6 | 10.2 | 82 | 79 |
| Aug | 83 | 74 | 1.2 | 6 | 10.4 | 80 | 79 |
| Sep | 84 | 74 | 2.1 | 10 | 10.8 | 81 | 79 |
| Oct | 85 | 75 | 3.0 | 12 | 11.1 | 81 | 81 |
| Nov | 86 | 76 | 4.7 | 17 | 10.9 | 82 | 83 |
| Dec | 86 | 77 | 6.9 | 22 | 10.5 | 82 | 84 |
Similar climates
Similar
Similar travel styleDar es SalaamTanzaniaSimilar travel styleKaohsiungTaiwanSimilar travel styleMakassarIndonesiaSimilar travel styleSanto DomingoDominican Republic
Want a side-by-side climate view? Compare Port Moresby with Dar es Salaam.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology