December weather forecast
Alotau, Papua New Guinea

Weather in December

The first month of the summer, December, is also a moderately hot month in Alotau, Papua New Guinea, with an average temperature fluctuating between 29.2°C (84.6°F) and 25.1°C (77.2°F).

Temperature

In Alotau, the average high-temperature in December is relatively the same as in November - a still moderately hot 29.2°C (84.6°F). In Alotau, in December, the average low-temperature is 25.1°C (77.2°F).

Heat index

In December, the average heat index is appraised at a sweltering 35.1°C (95.2°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, wind, clothing, and differences in body mass, height, and shape affect individual temperature impact. 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 particularly important for children. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In December, the average relative humidity is 79%.

Rainfall

In December, the rain falls for 20.2 days. Throughout December, 100mm (3.94") of precipitation is accumulated. Throughout the year, in Alotau, there are 235.8 rainfall days, and 1249mm (49.17") of precipitation is accumulated.

Sea temperature

January through April and December, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Alotau.
Note: 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

With an average of 12h and 43min of daylight, December has the longest days of the year in Alotau.
On the first day of the month, sunrise is at 05:26 and sunset at 18:07. On the last day of December, sunrise is at 05:39 and sunset at 18:22 +10.

Sunshine

The month with the most sunshine is December, with an average of 10.8h of sunshine.

UV index

January through April, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 7 in December transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in December in Alotau?

In Alotau, Papua New Guinea, in December, the average high-temperature is 29.2°C (84.6°F), and the average low-temperature is 25.1°C (77.2°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in December is appraised at 35.1°C (95.2°F).

What is the average humidity in December in Alotau?

The average relative humidity in December in Alotau, Papua New Guinea, is 79%.

How many days does it rain in December in Alotau?

In December, the rain falls for 20.2 days. Throughout December, 100mm (3.94") of precipitation is accumulated.

When is the sea warmest in Alotau?

January through April and December, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.

What is the sea water temperature in December in Alotau?

In Alotau, the average seawater temperature in December is 29°C (84.2°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.

When are the longest days in Alotau?

With an average of 12h and 43min of daylight, December has the longest days of the year.

How many hours of daylight does Alotau have in December?

The average day length in December is 12h and 43min.

When are sunrise and sunset in December in Alotau?

On the first day of December in Alotau, Papua New Guinea, sunrise is at 05:26 and sunset at 18:07. On the last day of the month, sunrise is at 05:39 and sunset at 18:22 +10.

What month has the most sunshine in Alotau?

With an average of 10.8h of sunshine, December has the most sunshine of the year.

How many hours of sunshine does Alotau have in December?

The average sunshine duration in December is 10.8h.

When is the highest UV index in Alotau?

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

What is the UV index intensity in December in Alotau?

In Alotau, the average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.

Average temperature in December
Alotau, Papua New Guinea

Average temperature in December - Alotau, Papua New Guinea
  • Average high temperature in December: 29.2°C

The warmest month (with the highest average high temperature) is January (29.5°C).
The month with the lowest average high temperature is July (25.9°C).

  • Average low temperature in December: 25.1°C

The month with the highest average low temperature is February (25.6°C).
The coldest months (with the lowest average low temperature) are July and August (23.3°C).

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Average pressure in December
Alotau, Papua New Guinea

Average pressure in December - Alotau, Papua New Guinea
  • Average pressure in December: 1007.7mbar

The month with the highest atmospheric pressure is August (1012.1mbar).
The month with the lowest atmospheric pressure is January (1007.2mbar).

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Average wind speed in December
Alotau, Papua New Guinea

Average wind speed in December - Alotau, Papua New Guinea
  • Average wind speed in December: 7.6km/h

The windiest month (with the highest average wind speed) is July (13.6km/h).
The calmest month (with the lowest average wind speed) is February (6.7km/h).

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Average humidity in December
Alotau, Papua New Guinea

Average humidity in December - Alotau, Papua New Guinea
  • Average humidity in December: 79%

The month with the highest relative humidity is June (84%).
The month with the lowest relative humidity is February (77%).

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Average rainfall in December
Alotau, Papua New Guinea

Average rainfall in December - Alotau, Papua New Guinea
  • Average rainfall in December: 100mm

The wettest month (with the highest rainfall) is March (163mm).
The driest month (with the least rainfall) is September (66mm).

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Average rainfall days in December
Alotau, Papua New Guinea

Average rainfall days in December - Alotau, Papua New Guinea
  • Average rainfall days in December: 20.2 days

The month with the highest number of rainy days is January (23.1 days).
The month with the least rainy days is August (15.4 days).

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Average sea temperature in December
Alotau, Papua New Guinea

Average sea temperature in December - Alotau, Papua New Guinea
  • Average sea temperature in December: 29°C

The best months for swimming (with the highest average sea temperature) are January, February, March, April and December (29°C).
The coldest months (with the lowest average sea temperature) are July, August and September (26°C).

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Average daylight in December /
Average sunshine in December
Alotau, Papua New Guinea

Average daylight in December / Average sunshine in December - Alotau, Papua New Guinea
  • Average daylight in December: 12h and 43min

The month with the longest days is December (Average daylight: 12h and 43min).
The month with the shortest days is June (Average daylight: 11h and 32min).

  • Average sunshine in December: 10h and 48min

The month with the most sunshine is December (Average sunshine: 10h and 48min).
The month with the least sunshine is July (Average sunshine: 5h and 30min).

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Average sunshine days in December
Alotau, Papua New Guinea

Average sunshine days in December - Alotau, Papua New Guinea
  • Average sunshine days in December: 9.5 days

The month with the most sunshine days is August (11.9 days).
The month with the least sunshine days is May (5.9 days).

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Average UV index in December
Alotau, Papua New Guinea

Average UV index in December - Alotau, Papua New Guinea
  • Average UV index in December: 7

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

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Average cloud cover in December
Alotau, Papua New Guinea

Average cloud cover in December - Alotau, Papua New Guinea
  • Average cloud cover in December: 34

The months with the most cloud cover are June and July (Cloud cover 48).
The month with the least cloud cover is December (Cloud cover 34).

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Average visibility in December
Alotau, Papua New Guinea

Average visibility in December - Alotau, Papua New Guinea
  • Average visibility in December: 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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