Port Moresby
Papua New Guinea
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Port Moresby, Papua New Guinea

The mountains and beautiful clear waters surrounding the beautiful Port Moresby, in Papua New Guinea
The mountains and beautiful clear waters surrounding the beautiful Port Moresby, in Papua New Guinea
August, the last month of the winter, in Port Moresby, is a hot month, with average temperature varying between 22.6°C (72.7°F) and 30.3°C (86.5°F).

Temperature

In August, the average high-temperature is essentially the same as in July - a tropical 30.3°C (86.5°F). In August, in Port Moresby, the average low-temperature is 22.6°C (72.7°F).

Humidity

The average relative humidity in Port Moresby, Papua New Guinea, is 76%.

Rainfall

The month with the least rainfall in Port Moresby is August when the rain falls for 4 days and typically collects 12mm (0.5") of precipitation.

Sea temperature

With an average sea temperature of 25.6°C (78.1°F), August is the month with the coldest seawater. For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Port Moresby, the average length of the day is 11.8h.

Sunshine

In August, the average sunshine is 7.2h.

UV index

January through April, August through December, with an average maximum UV index of 12, are months with the highest UV index in Port Moresby. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from unsafe exposure to the UV radiation for average individuals.
In August, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in August in Port Moresby?

In Port Moresby, Papua New Guinea, in August, the average high-temperature is 30.3°C (86.5°F), and the average low-temperature is 22.6°C (72.7°F).

What is the average humidity in August in Port Moresby?

The average relative humidity in August in Port Moresby is 76%.

How many days does it rain in August in Port Moresby?

In August, in Port Moresby, the rain falls for 4 days. Throughout August, 12mm (0.5") of precipitation is accumulated.

What is the driest month in Port Moresby?

The month with the least rainfall in Port Moresby, Papua New Guinea, is August when the rain falls for 4 days and typically collects 12mm (0.5") of precipitation.

What month is the sea coldest in Port Moresby?

August is the month with the coldest seawater in Port Moresby, with an average sea temperature of 25.6°C (78.1°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How warm is the water in August in Port Moresby?

In Port Moresby, in August, the average water temperature is 25.6°C (78.1°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in August in Port Moresby?

The average length of the day in August in Port Moresby, Papua New Guinea, is 11.8h.

How many hours of sunshine does Port Moresby have in August?

The average sunshine in August in Port Moresby is 7.2h.

What is the month with the highest UV index in Port Moresby?

Months with the highest UV index in Port Moresby, Papua New Guinea, are January through April, August through December, with an average maximum UV index of 12.

What is the UV index reading in August in Port Moresby?

In Port Moresby, Papua New Guinea, the average daily maximum UV index in August is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in August - Port Moresby, Papua New Guinea
  • Average high temperature in August: 30.3°C

The warmest month (with the highest average high temperature) is November (32.5°C).
The month with the lowest average high temperature is July (29.9°C).

  • Average low temperature in August: 22.6°C

Months with the highest average low temperature are January and December (23.7°C).
The coldest month (with the lowest average low temperature) is July (22.4°C).

Average humidity in August - Port Moresby, Papua New Guinea
  • Average humidity in August: 76%

The month with the highest relative humidity is April (82%).
The month with the lowest relative humidity is November (75%).

Average rainfall in August - Port Moresby, Papua New Guinea
  • Average rainfall in August: 12mm

The wettest month (with the highest rainfall) is January (192.2mm).
The driest month (with the lowest rainfall) is August (12mm).

Average rainfall days in August - Port Moresby, Papua New Guinea
  • Average rainfall days in August: 4 days

Months with the highest number of rainy days are January and March (18 days).
Months with the lowest number of rainy days are July and August (4 days).

Average sea temperature in August - Port Moresby, Papua New Guinea
  • Average sea temperature in August: 25.6°C

The best month for swimming (with the highest average sea temperature) is January (29.7°C).
The coldest month (with the lowest average sea temperature) is August (25.6°C).

Average daylight in August / Average sunshine in August - Port Moresby, Papua New Guinea
  • Average daylight in August: 11.8h

The month with the longest days is December (Average daylight: 12.7h).
Months with shortest days are June and July (Average daylight: 11.6h).

  • Average sunshine in August: 7.2h

The month with most sunshine is November (Average sunshine: 8.1h).
The month with least sunshine is February (Average sunshine: 5.6h).

Average UV index in August - Port Moresby, Papua New Guinea
  • Average UV index in August: 12

Months with the highest UV index are January, February, March, April, August, September, October, November and December (UV index 12).
The month with the lowest UV index is June (UV index 9).