Port Moresby, PAPUA NEW GUINEA and its best beaches
Climate - Temperatures and rainfall - Coral Sea
Port Moresby: Temperatures during the day, at night, rain and bathing conditions
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January Day temperature  90°F / 32°C |
Night temp.  76°F / 24°C |
Bathing temperature  85°F / 29°C |
Rain  178 mm |
Conditions  
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February Day temperature 88°F / 31°C |
Night temp. 76°F / 24°C |
Bathing temperature 85°F / 29°C |
Rain 193 mm |
Conditions
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March Day temperature 88°F / 31°C |
Night temp. 76°F / 24°C |
Bathing temperature 85°F / 29°C |
Rain 170 mm |
Conditions
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April Day temperature 88°F / 31°C |
Night temp. 76°F / 24°C |
Bathing temperature 86°F / 30°C |
Rain 107 mm |
Conditions
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May Day temperature 86°F / 30°C |
Night temp. 76°F / 24°C |
Bathing temperature 86°F / 30°C |
Rain 064 mm |
Conditions  
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June Day temperature 85°F / 29°C |
Night temp. 74°F / 23°C |
Bathing temperature 86°F / 30°C |
Rain 033 mm |
Conditions
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July Day temperature 83°F / 28°C |
Night temp. 74°F / 23°C |
Bathing temperature 85°F / 29°C |
Rain 028 mm |
Conditions
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August Day temperature 83°F / 28°C |
Night temp. 74°F / 23°C |
Bathing temperature 86°F / 30°C |
Rain 018 mm |
Conditions
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September Day temperature 85°F / 29°C |
Night temp. 74°F / 23°C |
Bathing temperature 86°F / 30°C |
Rain 025 mm |
Conditions
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October Day temperature 86°F / 30°C |
Night temp. 76°F / 24°C |
Bathing temperature 86°F / 30°C |
Rain 036 mm |
Conditions
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November Day temperature 88°F / 31°C |
Night temp. 76°F / 24°C |
Bathing temperature 85°F / 29°C |
Rain 048 mm |
Conditions
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December Day temperature 90°F / 32°C |
Night temp. 76°F / 24°C |
Bathing temperature 86°F / 30°C |
Rain 112 mm |
Conditions
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Papua New Guinea : climate and when to go to Port moresby
Generally warm and humid, monsoon rainy season (June to November) southwest winds, dry season (December to May) with harmattan winds from northeast.
| January Risky |
February Risky |
March Risky |
April Acceptable |
May Pecfect |
June Pecfect |
July Pecfect |
August Pecfect |
September Pecfect |
October Pecfect |
November Pecfect |
December Acceptable |
When to go? The hottest month for the beach, lazing around and swimming is December. Check the precipitations because heavy showers may occur, otherwise other periods are possible. The coolest month is July, if you can not stand the heat too much. The driest month of the year is August, if you do not like the rain at all.
Click on
Port Moresby to display its climate.
Graphs and temperature curves with average precipitation over the year
Precipitation, rainfall, cyclone: PAPUA NEW GUINEA
Temperatures of bathing water around Port Moresby
Landmarks
Perfect conditions to enjoy the beach.
Favorable conditions for enjoying the beach. Cloudy with sunny spells and thunderstorms.
Very strong tropical or monsoon rains.
Months at risk of cyclones with alerts level 1 to 5. Nice swimming at more than 26°C / 79°F. Everything is perfect for traveling.No cyclone risk for this country
Coral Sea
Climate August 2025
Port Moresby sunshine in summer and winter
The sun at its zenith, that means well perpendicular to the surface of the Earth, sending 100% of radiation and heat. Port Moresby receives in winter (january), 97% of sun power and 83% during summer time (july).
The average temperature and sunshine deviations between summer and winter are 14%. This small gap means that the temperature at sea does not really vary and that the sea remains warm enough in summer and winter. The air is also hot all year round without great thermal amplitude.
Average temperatures and rainfall for a stay in August
On the left, the averages observed every month of August on the Papua New Guinea beaches. The trends for next month are, slightly warmer daytime temperatures, a bathing water in Coral Sea remaining at a stable temperature, more abundant rains with nights as temperate as this month.
Sunset and sunrise times for PAPUA NEW GUINEA
Local time : August 2025, Sunday 10, 08:31 PM
Sunrise time : 06:24 am, point A
Sunset time : 6:04 pm, point B
Duration of daylight : 11:40 / 24:00
Jet lag : GMT+10
The average monthly UV index of PAPUA NEW GUINEA
What is the period of mosquitoes virulence over the year?
Weather forecast for Port Moresby
Here are the current 5-day forecasts for Saraga / Port Moresby. Temperatures are spaced 3 hours apart for each day. The summary of the state of the sky gives the trend of the week. The sea temperature at is a monthly average. In lagoons or seashores where the bathing water is shallow, you can add some degrees.
Monday
August 11, 2025
8 am
78.8°F
26°C
Light rain
Humidity 75%
Sea 86°F/30°C
Monday
August 11, 2025
11 am
76.7°F
25°C
Light rain
Humidity 79%
Sea 86°F/30°C
Monday
August 11, 2025
2 pm
76.3°F
25°C
Broken clouds
Humidity 80%
Sea 86°F/30°C
Monday
August 11, 2025
5 pm
76.2°F
25°C
Broken clouds
Humidity 80%
Sea 86°F/30°C
Monday
August 11, 2025
8 pm
75.6°F
25°C
Broken clouds
Humidity 80%
Sea 86°F/30°C
Monday
August 11, 2025
11 pm
75.6°F
25°C
Light rain
Humidity 81%
Sea 86°F/30°C
Tuesday
August 12, 2025
8 am
79.5°F
27°C
Broken clouds
Humidity 73%
Sea 86°F/30°C
Tuesday
August 12, 2025
11 am
77.3°F
26°C
Light rain
Humidity 79%
Sea 86°F/30°C
Tuesday
August 12, 2025
2 pm
77.4°F
26°C
Light rain
Humidity 82%
Sea 86°F/30°C
Tuesday
August 12, 2025
5 pm
76.7°F
25°C
Light rain
Humidity 85%
Sea 86°F/30°C
Tuesday
August 12, 2025
8 pm
75.7°F
25°C
Light rain
Humidity 88%
Sea 86°F/30°C
Tuesday
August 12, 2025
11 pm
75.3°F
25°C
Light rain
Humidity 89%
Sea 86°F/30°C
Wednesday
August 13, 2025
8 am
79.6°F
27°C
Broken clouds
Humidity 80%
Sea 86°F/30°C
Wednesday
August 13, 2025
11 am
76.8°F
25°C
Light rain
Humidity 89%
Sea 86°F/30°C
Wednesday
August 13, 2025
2 pm
77.2°F
26°C
Light rain
Humidity 84%
Sea 86°F/30°C
Wednesday
August 13, 2025
5 pm
76.5°F
25°C
Light rain
Humidity 85%
Sea 86°F/30°C
Wednesday
August 13, 2025
8 pm
75.6°F
25°C
Light rain
Humidity 87%
Sea 86°F/30°C
Wednesday
August 13, 2025
11 pm
75.3°F
25°C
Light rain
Humidity 87%
Sea 86°F/30°C
Thrusday
August 14, 2025
8 am
77.7°F
26°C
Light rain
Humidity 79%
Sea 86°F/30°C
Thrusday
August 14, 2025
11 am
75.9°F
25°C
Light rain
Humidity 84%
Sea 86°F/30°C
Thrusday
August 14, 2025
2 pm
75.7°F
25°C
Light rain
Humidity 84%
Sea 86°F/30°C
Thrusday
August 14, 2025
5 pm
75.5°F
25°C
Light rain
Humidity 83%
Sea 86°F/30°C
Thrusday
August 14, 2025
8 pm
75.5°F
25°C
Light rain
Humidity 83%
Sea 86°F/30°C
Thrusday
August 14, 2025
11 pm
75.7°F
25°C
Light rain
Humidity 83%
Sea 86°F/30°C
Friday
August 15, 2025
8 am
78.9°F
27°C
Broken clouds
Humidity 75%
Sea 86°F/30°C
Friday
August 15, 2025
11 am
76°F
25°C
Light rain
Humidity 82%
Sea 86°F/30°C
Weather uncertainties 2025 to go to Port Moresby ?
When traveling in the tropics as a seaside, rain is not welcome. If you see this indicator, with possible storms, that does not mean that it will rain all day long. When we observe the local rainfall, it is either really zero or very weak. Meteorologists prefer to be pessimistic. So observe below, the skies photographed during a week announced stormy in Asia. It did not rain once. I invite you to integrate this parameter before going to Port Moresby for a good trip to the sun!
