Weather in Papua New Guinea - today, tomorrow and 14-day forecast

Right now temperatures across Papua New Guinea range from 26° to 29°. Below: today's conditions city by city, a live weather map, the 14-day outlook and month-by-month climate to help you pick the best time to travel.

Country values are the median of forecasts from 5 cities; the range shows local differences. Methodology.

Weather in Papua New Guinea's cities today

🌤️Wewak 29°💧 1.3 mm 🌧️Goroka 28°💧 2.4 mm 🌤️Mount Hagen 27°💧 1.7 mm ☁️Port Moresby 26°💧 0.1 mm 🌧️Lae 26°💧 1.1 mm

Weather map - today's temperatures

Pill colour shows today's daytime temperature. Click a city for its full 14-day forecast.

Next days in Papua New Guinea

today🌤️ 27°💧 1.3 mm

Sun🌤️ 27°💧 1.3 mm

Mon🌤️ 27°💧 10 mm

Tue☁️ 26°💧 3.9 mm

Wed🌧️ 27°💧 1.5 mm

Thu☀️ 26°💧 0.5 mm

Fri🌤️ 26°💧 0.4 mm

Sat☁️ 26°💧 0.6 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Saturday 5 Sept in Papua New Guinea, the forecast high is 27°C. Typical daytime temperatures at this time of year range from 24°C to 27°C, so it will be warmer than usual. It is warmer than 78% of similar days.

Saturday 5 Sept

27°Cwarmer than usual

usually 24°C–27°C

warmer than 78% of similar days

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

Sunday 6 Sept

27°Cwarmer than usual

usually 24°C–27°C

warmer than 70% of similar days

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

Monday 7 Sept

27°Cwarmer than usual

usually 24°C–27°C

warmer than 72% of similar days

night: exceptionally warm rain: exceptionally wet wind: exceptionally strong

Tuesday 8 Sept

26°Cnear normal

usually 24°C–27°C

night: exceptionally warm rain: more rain than usual wind: exceptionally strong

Wednesday 9 Sept

27°Cwarmer than usual

usually 24°C–27°C

warmer than 71% of similar days

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

Thursday 10 Sept

26°Cnear normal

usually 24°C–27°C

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

Friday 11 Sept

26°Cnear normal

usually 24°C–27°C

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 25°C by day. The coolest year was 1990 (22°C) and the warmest was 2000 (28°C). The current forecast averages 26°C - higher than in 71% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Papua New Guinea

Papua New Guinea - 14-day weather forecast infographic

Papua New Guinea 30 & 45-day weather - long-range outlook

Next 16 days · forecast

26°

around 23° at night · days with rain: 9

Weeks 3-4 · avg for September

30°

around 24° at night · rain chance 9%

Weeks 5-7 · avg for October

30°

around 25° at night · rain chance 15%

The 30 & 45-day outlook for Papua New Guinea: the next 16 days are a numerical forecast updated daily - on average 26° by day and 23° at night. Further out we rely on multi-year climate averages: around 30° in September, and about 30° in October. Forecasts beyond two weeks are indicative only.

Today vs the next days - Papua New Guinea cities

City	Today	+3 days	+7 days	Rain today
🌤️ Wewak	29℃	29℃	27℃	1.3 mm
🌧️ Goroka	28℃	24℃	22℃	2.4 mm
🌤️ Mount Hagen	27℃	23℃	16℃	1.7 mm
☁️ Port Moresby	26℃	26℃	26℃	0.1 mm
🌧️ Lae	26℃	28℃	26℃	1.1 mm

Day-by-day forecast for Papua New Guinea

Saturday5 September 2026

🌤️27°a few clouds

night 22° · evening 24° · rain 1.27 mm · humidity 67% · wind 4 m/s · clouds 21%

Sunday6 September 2026

🌤️27°scattered clouds

night 23° · evening 24° · rain 1.33 mm · humidity 63% · wind 4 m/s · clouds 33%

Monday7 September 2026

🌤️27°a few clouds

night 22° · evening 24° · rain 10.04 mm · humidity 64% · wind 4 m/s · clouds 21%

Tuesday8 September 2026

☁️26°broken clouds

night 22° · evening 23° · rain 3.88 mm · humidity 66% · wind 4 m/s · clouds 80%

Wednesday9 September 2026

🌧️27°moderate rain

night 23° · evening 23° · rain 1.5 mm · humidity 66% · wind 4 m/s · clouds 42%

Thursday10 September 2026

☀️26°clear sky

night 22° · evening 23° · rain 0.51 mm · humidity 58% · wind 4 m/s · clouds 18%

Friday11 September 2026

🌤️26°scattered clouds

night 22° · evening 22° · rain 0.39 mm · humidity 61% · wind 4 m/s · clouds 47%

Saturday12 September 2026

☁️26°broken clouds

night 23° · evening 23° · rain 0.57 mm · humidity 67% · wind 3 m/s · clouds 96%

Sunday13 September 2026

🌧️26°light rain

night 23° · evening 24° · rain 0.45 mm · humidity 57% · wind 4 m/s · clouds 43%

Monday14 September 2026

🌧️26°light rain

night 24° · evening 24° · rain 0.48 mm · humidity 57% · wind 3 m/s · clouds 74%

Tuesday15 September 2026

☁️26°broken clouds

night 23° · evening 24° · rain 0.72 mm · humidity 63% · wind 3 m/s · clouds 90%

Wednesday16 September 2026

☁️26°broken clouds

night 23° · evening 23° · rain 0.96 mm · humidity 71% · wind 4 m/s · clouds 55%

Thursday17 September 2026

🌧️27°light rain

night 24° · evening 23° · rain 1.965 mm · humidity 68% · wind 3 m/s · clouds 62%

Friday18 September 2026

🌧️26°light rain

night 22° · evening 23° · rain 2.625 mm · humidity 65% · wind 3 m/s · clouds 78%

Saturday19 September 2026

🌧️25°light rain

night 22° · evening 23° · rain 5.385 mm · humidity 76% · wind 3 m/s · clouds 69%

Sunday20 September 2026

☀️27°clear sky

night 22° · evening 23° · rain 3.195 mm · humidity 63% · wind 3 m/s · clouds 24%

Sea temperature - Papua New Guinea

Water today

28°C

Week avg

28°C

Waves today

0.5 m

How's the water?

very warm

16-day sea temperature forecast:

5.09 28°C6.09 28°C7.09 28°C8.09 28°C9.09 28°C10.09 28°C11.09 28°C12.09 28°C13.09 28°C

Average sea temperature through the year:

Jan 30°CFeb 30°CMar 31°CApr 31°CMay 31°CJun 30°CJul 29°CAug 29°CSep 29°COct 30°CNov 30°CDec 31°C

Beach	Water today	Water week avg	Waves	How's the water?
Wewak	29℃	29℃	0.5 m	very warm
Lae	28℃	28℃	0.4 m	very warm
Port Moresby	25℃	25℃	0.9 m	warm

Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Air quality and smog in Papua New Guinea

City	PM2.5 (µg/m³)	PM10 (µg/m³)	Air quality
Port Moresby	8.6	13.2	very good

Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-05, 11:00).

Papua New Guinea weather through the year

Papua New Guinea weather month by month - when is the best time to go?

January (32°)February (31°)March (31°)April (31°)May (30°)June (30°)July (30°)August (29°)September (30°)October (30°)November (31°)December (32°)

Weather in other countries in Oceania

Pitcairn IslandsPalauSamoaNorthern Mariana IslandsSolomon IslandsNorfolk Island

Public holidays in Papua New Guinea - when are the long weekends?

Next long weekend in Papua New Guinea: Christmas Day (25 December, Friday) - Friday–Sunday (3 days off).

2026

16 SeptemberWednesday

Independence Day

25 DecemberFriday

Christmas Day

long weekend

26 DecemberSaturday

Boxing Day

falls on a weekend

2027

1 JanuaryFriday

New Year's Day

long weekend

26 MarchFriday

Good Friday

long weekend

27 MarchSaturday

Holy Saturday

falls on a weekend

28 MarchSunday

Easter Sunday

falls on a weekend

29 MarchMonday

Easter Monday

long weekend

14 JuneMonday

Queen's Birthday

long weekend

23 JulyFriday

Remembrance Day

long weekend

26 AugustThursday

Repentance Day

long weekend + bridge day

16 SeptemberThursday

Independence Day

long weekend + bridge day

Public holidays (statutory days off) - shops, offices and some attractions may be closed. A "bridge day" is a workday between a holiday and the weekend worth taking as leave. Lunar holiday dates marked as tentative may shift by one day after the official announcement.

Calendar sources

Nager.Date public holiday database

FAQ - Papua New Guinea weather

What is the weather like in Papua New Guinea today?

Today it is about 27° during the day and 22° at night, a few clouds.

How far ahead can I check the forecast for Papua New Guinea?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.