January weather forecast
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

Weather in January

January, like December, in Port Moresby, Papua New Guinea, is another warm summer month, with an average temperature ranging between max 29.8°C (85.6°F) and min 24.4°C (75.9°F).

Temperature

In Port Moresby, the average high-temperature in January is relatively the same as in December - a moderately hot 29.8°C (85.6°F). In Port Moresby, Papua New Guinea, the average low-temperature is 24.4°C (75.9°F).

Heat index

The average heat index in January is computed to be a very hot 35°C (95°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like pregnancy, clothing, differences in body mass, height, and shape, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

January and February, with an average relative humidity of 73%, are the least humid months in Port Moresby.

Rainfall

In Port Moresby, during 23.4 rainfall days, 156mm (6.14") of precipitation is typically accumulated. Throughout the year, there are 249.8 rainfall days, and 1311mm (51.61") of precipitation is accumulated.

Sea temperature

January is the month with the warmest seawater in Port Moresby, with an average sea temperature of 29.7°C (85.5°F).
Note: 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.

Daylight

The average length of the day in January in Port Moresby is 12h and 36min.
On the first day of the month, sunrise is at 05:54 and sunset at 18:34. On the last day of January, in Port Moresby, sunrise is at 06:08 and sunset at 18:40 +10.

Sunshine

The average sunshine in January in Port Moresby is 8.9h.

UV index

The months with the highest UV index in Port Moresby are January, March through May, October through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 in January interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in January in Port Moresby?

In January, in Port Moresby, the average high-temperature is 29.8°C (85.6°F), and the average low-temperature is 24.4°C (75.9°F). in January, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 35°C (95°F).

What is the least humid month in Port Moresby?

The months with the lowest humidity are January and February, with an average relative humidity of 73%.

What is the average humidity in January in Port Moresby?

In Port Moresby, Papua New Guinea, the average relative humidity in January is 73%.

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

In Port Moresby, in January, it is raining for 23.4 days, with typically 156mm (6.14") of accumulated precipitation.

What month is the sea warmest in Port Moresby?

The month with the warmest seawater in Port Moresby, Papua New Guinea, is January, with an average sea temperature of 29.7°C (85.5°F).

What is the water temperature in January in Port Moresby?

In Port Moresby, in January, the average water temperature is 29.7°C (85.5°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

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

In January, the average day length in Port Moresby, Papua New Guinea, is 12h and 36min.

When are sunrise and sunset in January in Port Moresby?

In January, on the first day of the month, sunrise is at 05:54 and sunset at 18:34. On the last day of the month, sunrise is at 06:08 and sunset at 18:40 +10.

How long on average sun shines in January in Port Moresby?

In Port Moresby, Papua New Guinea, the average sunshine duration in January is 8.9h.

What are the months with the highest UV index in Port Moresby?

The months with the highest UV index are January, March through May, October through December, with an average maximum UV index of 7.

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

In Port Moresby, the average daily maximum UV index in January is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.

Average temperature in January
Port Moresby, Papua New Guinea

Average temperature in January - Port Moresby, Papua New Guinea
  • Average high temperature in January: 29.8°C

The warmest month (with the highest average high temperature) is December (30.2°C).
The months with the lowest average high temperature are July and August (27.6°C).

  • Average low temperature in January: 24.4°C

The month with the highest average low temperature is December (24.5°C).
The coldest month (with the lowest average low temperature) is August (22.5°C).

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Average pressure in January
Port Moresby, Papua New Guinea

Average pressure in January - Port Moresby, Papua New Guinea
  • Average pressure in January: 1007.9mbar

The month with the highest atmospheric pressure is August (1012.1mbar).
The month with the lowest atmospheric pressure is January (1007.9mbar).

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Average wind speed in January
Port Moresby, Papua New Guinea

Average wind speed in January - Port Moresby, Papua New Guinea
  • Average wind speed in January: 11.6km/h

The windiest month (with the highest average wind speed) is July (18.9km/h).
The calmest month (with the lowest average wind speed) is December (9.7km/h).

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Average humidity in January
Port Moresby, Papua New Guinea

Average humidity in January - Port Moresby, Papua New Guinea
  • Average humidity in January: 73%

The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January and February (73%).

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Average rainfall in January
Port Moresby, Papua New Guinea

Average rainfall in January - Port Moresby, Papua New Guinea
  • Average rainfall in January: 156mm

The wettest month (with the highest rainfall) is March (203mm).
The driest month (with the least rainfall) is July (46mm).

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Average rainfall days in January
Port Moresby, Papua New Guinea

Average rainfall days in January - Port Moresby, Papua New Guinea
  • Average rainfall days in January: 23.4 days

The month with the highest number of rainy days is March (24.6 days).
The month with the least rainy days is July (14.7 days).

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Average sea temperature in January
Port Moresby, Papua New Guinea

Average sea temperature in January - Port Moresby, Papua New Guinea
  • Average sea temperature in January: 29.7°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).

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Average daylight in January /
Average sunshine in January
Port Moresby, Papua New Guinea

Average daylight in January / Average sunshine in January - Port Moresby, Papua New Guinea
  • Average daylight in January: 12h and 36min

The month with the longest days is December (Average daylight: 12h and 40min).
The month with the shortest days is June (Average daylight: 11h and 35min).

  • Average sunshine in January: 8h and 54min

The month with the most sunshine is November (Average sunshine: 11h and 18min).
The month with the least sunshine is May (Average sunshine: 7h and 6min).

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Average sunshine days in January
Port Moresby, Papua New Guinea

Average sunshine days in January - Port Moresby, Papua New Guinea
  • Average sunshine days in January: 5.7 days

The month with the most sunshine days is July (13.4 days).
The months with the least sunshine days are March and April (5.2 days).

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Average UV index in January
Port Moresby, Papua New Guinea

Average UV index in January - Port Moresby, Papua New Guinea
  • Average UV index in January: 7

The months with the highest UV index are January, March, April, May, October, November and December (UV index 7).
The months with the lowest UV index are February, June, July, August and September (UV index 6).

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Average cloud cover in January
Port Moresby, Papua New Guinea

Average cloud cover in January - Port Moresby, Papua New Guinea
  • Average cloud cover in January: 40

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is November (Cloud cover 28).

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Average visibility in January
Port Moresby, Papua New Guinea

Average visibility in January - Port Moresby, Papua New Guinea
  • Average visibility in January: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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