AI-generatedPort Moresby at a glance
- Best time
- Jun – Aug
- Warmest month
- Nov · 30°
- Warmest sea
- Jan · 29.5°
- Sunshine a year
- 2,020 h
- Rain a year
- 2,052 mm
- Climate
- Tropical
- Time zone
- UTC+10
- Elevation
- 25 m
Climate in Port Moresby
Port Moresby has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. November is the warmest month with average highs of 30 °C, while July is the coolest at 28 °C. With around 2,020 hours of sunshine a year, Port Moresby is moderately sunny; October is the sunniest month with 6.3 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Fair
Best time to visit: June – August
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 26°
- Midday, 13:00: about 30°
- Afternoon, 16:00: about 29°
- Evening, 20:00: about 26°
- Night, 23:00: about 25°
05:4818:06
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:35–06:16 · evening 17:38–18:19
- Blue hour
- Morning 05:27–05:35 · evening 18:19–18:27
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Port Moresby in October?
In October, Port Moresby is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 26.5 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 18 days, totalling 127 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Port Moresby.
More details for October
- Daylight
- 12 h 18 min05:48 – 18:06
- UV index
- 14 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 74 %on averageAll months
- Hot days
- 17 days30 °C or moreAll months
- Time zone
- UTC+10Pacific/Port_Moresby
How the score comes together
- Temperatureweight 50 %61 %
- Sunshineweight 20 %55 %
- Few rainy daysweight 30 %1 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Sea temperature in Port Moresby
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 25.7 – 27.8 °C
Swimming season: All year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Port Moresby ranges from 25.4 °C in August to 29.5 °C in January. At 20 °C and more, the sea is warm enough for swimming all year round.
The sea warms up slowly: it is warmest in January, while the air already peaks in November. In March the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in January, eight out of ten years were between 28.9 and 30.0 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 29.5° | 28.9° | 30.0° | very warm |
| FebruaryFeb | 29.5° | 28.9° | 30.0° | very warm |
| MarchMar | 29.4° | 28.7° | 30.1° | very warm |
| AprilApr | 29.0° | 28.3° | 29.8° | very warm |
| MayMay | 27.9° | 27.2° | 28.7° | warm |
| JuneJun | 26.8° | 25.9° | 27.8° | warm |
| JulyJul | 25.9° | 25.2° | 26.9° | pleasant |
| AugustAug | 25.4° | 24.9° | 26.4° | pleasant |
| SeptemberSep | 25.6° | 24.8° | 26.6° | pleasant |
| OctoberOct | 26.5° | 25.7° | 27.8° | warm |
| NovemberNov | 27.7° | 26.7° | 29.2° | warm |
| DecemberDec | 29.1° | 28.3° | 30.1° | very warm |
Sunshine hours in Port Moresby
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.3 of 12.3 hours of daylight in Port Moresby, 51 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Port Moresby
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 14 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.
The sun is strongest in October (UV 14).
Minutes until sunburn in October
- Very fair skin
- about 10 min
- Fair skin
- about 10 min
- Light brown skin
- about 15 min
- Olive skin
- about 20 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Port Moresby: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Port Moresby has about 18 rainy days with 127 mm of rain in total.
Wind and clouds in Port Moresby
How breezy and how cloudy Port Moresby is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Port Moresby typically peaks at 14 km/h during the day: Beaufort 3, light breeze.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 74 % of the sky over Port Moresby: mostly cloudy, with about 6.3 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Port Moresby
How often the day gets hot in Port Moresby (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Port Moresby has about 17 hot days, with an average daytime high of 30 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Port Moresby
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Warm 20–24°
- muggy month (10+ muggy days)
WarmOctober: nights around 23°. Tropical nights: a fan or air conditioning helps. Muggy on about 30 days (dew point 18 °C or more).
The coolest nights are in August (22°), the warmest in January (23°). Nights stay tropical all year (20 °C and more), so a room with air conditioning or at least a fan pays off. It is muggy (dew point 18 °C or more) on about 356 days a year, mostly all year round.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 40 | 30° | 23° | 29.5° | 5.0 h | 24 | 264 |
| FebruaryFeb | 40 | 30° | 23° | 29.5° | 4.7 h | 21 | 262 |
| MarchMar | 42 | 29° | 23° | 29.4° | 4.4 h | 26 | 349 |
| AprilApr | 44 | 29° | 23° | 29.0° | 4.9 h | 24 | 237 |
| MayMay | 48 | 29° | 23° | 27.9° | 5.7 h | 19 | 146 |
| JuneJun | 60 | 29° | 22° | 26.8° | 5.8 h | 13 | 84 |
| JulyJul | 70 | 28° | 22° | 25.9° | 5.9 h | 10 | 52 |
| AugustAug | 67 | 29° | 22° | 25.4° | 6.0 h | 10 | 56 |
| SeptemberSep | 53 | 30° | 22° | 25.6° | 6.0 h | 14 | 87 |
| OctoberOct | 42 | 30° | 23° | 26.5° | 6.3 h | 18 | 127 |
| NovemberNov | 40 | 30° | 23° | 27.7° | 6.1 h | 21 | 168 |
| DecemberDec | 39 | 30° | 23° | 29.1° | 5.6 h | 24 | 220 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
9.48° S, 147.15° E · 25 m · Pacific/Port_Moresby
Best time to visit Port Moresby
The best time to visit Port Moresby is from June to August. For a beach holiday with the sea above 21 °C, go from July to August. Rain is most frequent from September to June; the wettest month is March with 349 mm.
Port Moresby through the seasons
How the weather changes over the seasons, with averages for each.
Port Moresby in the dry season
Jul – Aug
Good
- 28–29 °C by day
- Sea 26 °C
- 6 h of sun a day
- 19 rainy days in all
Port Moresby in the rainy season
Sep – Jun
Fair
- 29–30 °C by day
- Sea 28 °C
- 6 h of sun a day
- 203 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Port Moresby for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Compare two months in Port Moresby
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Port Moresby: score 70 against 42. In July, days are 2 °C cooler than in October. The sea is 1 °C cooler in July. July has 8 fewer rainy days.
| Month | October | July |
|---|---|---|
| Weather score | 42 | 70better |
| Day high | 30° | 28° |
| Night low | 23° | 22° |
| Sea | 26.5° | 25.9° |
| Sunshine | 6.3 h | 5.9 h |
| Rainy days | 18 | 10better |
| Rainfall | 127 mm | 52 mmbetter |
| Muggy days | 30 | 30 |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
Jul – Aug
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
Sep – Jun
12 or more rainy days
Port Moresby month by month
The typical weather for every month at a glance.
40January30° · Sea 30° · 5 h
In January, Port Moresby is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 29.5 °C – almost as warm as a bath. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 24 days, totalling 264 mm. On about 13 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is a so-so month for a holiday in Port Moresby.
Port Moresby in January40February30° · Sea 30° · 5 h
In February, Port Moresby is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 29.5 °C – almost as warm as a bath. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 21 days, totalling 262 mm. On about 11 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, February is a so-so month for a holiday in Port Moresby.
Port Moresby in February42March29° · Sea 29° · 4 h
In March, Port Moresby is hot: daytime highs average 29 °C, and even at night it stays warm at around 23 °C. The sea averages 29.4 °C – almost as warm as a bath. Expect around 4 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 349 mm. On about 7 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a so-so month for a holiday in Port Moresby.
Port Moresby in March44April29° · Sea 29° · 5 h
In April, Port Moresby is hot: daytime highs average 29 °C, and even at night it stays warm at around 23 °C. The sea averages 29.0 °C – almost as warm as a bath. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 24 days, totalling 237 mm. The air is often humid and muggy. All in all, April is a so-so month for a holiday in Port Moresby.
Port Moresby in April48May29° · Sea 28° · 6 h
In May, Port Moresby is hot: daytime highs average 29 °C, and even at night it stays warm at around 23 °C. The sea averages 27.9 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 19 days, totalling 146 mm. The air is often humid and muggy. All in all, May is a so-so month for a holiday in Port Moresby.
Port Moresby in May60June29° · Sea 27° · 6 h
In June, Port Moresby is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. The sea averages 26.8 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 84 mm in total. The air is often humid and muggy. All in all, June is a good month for a holiday in Port Moresby.
Port Moresby in June70July28° · Sea 26° · 6 h
In July, Port Moresby is hot: daytime highs average 28 °C, and even at night it stays warm at around 22 °C. The sea averages 25.9 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 52 mm in total. The air is often humid and muggy. All in all, July is a good month for a holiday in Port Moresby.
Port Moresby in July67August29° · Sea 25° · 6 h
In August, Port Moresby is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. The sea averages 25.4 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 56 mm in total. On about 6 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Port Moresby.
Port Moresby in August53September30° · Sea 26° · 6 h
In September, Port Moresby is hot: daytime highs average 30 °C, and even at night it stays warm at around 22 °C. The sea averages 25.6 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 87 mm in total. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Port Moresby.
Port Moresby in September42October30° · Sea 27° · 6 h
In October, Port Moresby is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 26.5 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 18 days, totalling 127 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Port Moresby.
Port Moresby in October40November30° · Sea 28° · 6 h
In November, Port Moresby is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 27.7 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 21 days, totalling 168 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is a so-so month for a holiday in Port Moresby.
Port Moresby in November39December30° · Sea 29° · 6 h
In December, Port Moresby is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 29.1 °C – almost as warm as a bath. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 24 days, totalling 220 mm. On about 15 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is not an ideal month for a holiday in Port Moresby.
Port Moresby in DecemberPort Moresby compared
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Port Moresby vs. Rabaul
In October Rabaul has the better holiday weather (score 48 vs. 42). During the day Rabaul is 1 °C cooler than Port Moresby. The sea in Rabaul is 3 °C warmer.
| in October | Port Moresby | Rabaul |
|---|---|---|
| Holiday score | 42 | 48 |
| Daytime high | 30° | 29° |
| Sea | 27° | 30° |
| Sunshine | 6 h | 6 h |
| Rainy days | 18 | 25 |
| Best time | Jun – Aug | All year |
Through the year
Papua New Guinea in October: the best places
In October, Port Moresby ranks 2 of 2 destinations in this country.
- Rabaul29°30°69
- 2Port MoresbyThis page30°27°42
Planning a trip to Port Moresby
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Port Moresby in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Port Moresby has its best school-holiday weather during the summer holidays (score 68) and its weakest during the Christmas holidays (score 40).
- 43
Easter holidays
Mar – Apr
Fair
- 29 °C by day
- Sea 29 °C
- 4.8 h of sun a day
- 25 rainy days a month
Keep in mind: Frequent rain
- 50
May half-term
May – Jun
Fair
- 29 °C by day
- Sea 28 °C
- 5.7 h of sun a day
- 18 rainy days a month
Keep in mind: Frequent rain
- 68
Summer holidays
Jul – Aug
GoodBest holidays
- 29 °C by day
- Sea 26 °C
- 6.0 h of sun a day
- 10 rainy days a month
Good for: Beach & swimming
- 42
October half-term
Oct
Fair
- 30 °C by day
- Sea 27 °C
- 6.3 h of sun a day
- 18 rainy days a month
Keep in mind: Frequent rain
- 40
Christmas holidays
Dec – Jan
Fair
- 30 °C by day
- Sea 29 °C
- 5.3 h of sun a day
- 24 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 18 h
- Distance
- 14,500 km
- Time zone
- UTC+10
- Jet lag
- About 9 days (9 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Port Moresby
When is the best time to visit Port Moresby?
The best time to visit Port Moresby is from June to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Port Moresby?
The sea temperature in Port Moresby ranges from 25.4 °C in August to 29.5 °C in January. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Port Moresby in October?
Yes. In October the sea averages 26.5 °C – lovely and warm for swimming.
What is the warmest month in Port Moresby?
November is the warmest month, with average highs of 30 °C and nights around 23 °C. July is the coolest month at 28 °C.
When does it rain most in Port Moresby?
Rain is most frequent from September to June; the wettest month is March with 349 mm. The driest month is July with 52 mm.
How many hours of sunshine does Port Moresby get?
Port Moresby gets around 2,020 hours of sunshine a year. The sunniest month is October with 6.3 hours a day; in March there are 4.4 hours a day.
What time zone is Port Moresby in?
Port Moresby uses the time zone Pacific/Port_Moresby, at UTC+10 all year.
How long is the flight from London to Port Moresby?
A nonstop flight from London to Port Moresby takes about 18 h, for a straight-line distance of about 14,500 km. Most routes need a change of planes, which adds time.
Which school holidays are best for Port Moresby?
Port Moresby has its best school-holiday weather during the summer holidays (score 68) and its weakest during the Christmas holidays (score 40). Holiday ratings (0–100): Easter holidays 43, May half-term 50, Summer holidays 68, October half-term 42, Christmas holidays 40.
Near Port Moresby
Other destinations close by.
Places with a climate like Port Moresby
Destinations whose weather through the year is closest to Port Moresby's – good alternatives.