December weather forecast
Rabaul, Papua New Guinea

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Weather in December

In the final month of the year, Rabaul experiences some of the warmest sea temperatures. Rainfall increases till December, leading to less sunshine hours in a day, even as the overall daylight hours increase slightly. December wraps up the year with very similar weather conditions to those observed in November. The culmination of the increase in the amount of rainfall throughout the year is reflected by the highest average rainfall of 241mm (9.49") in December.

Temperature

During January through August, November and December, Rabaul registers its lowest temperatures, averaging a high of 31°C (87.8°F).

Rainfall

In December, the rain falls for 21 days. Throughout December, 241mm (9.49") of precipitation is accumulated. In Rabaul, during the entire year, the rain falls for 248 days and collects up to 2022mm (79.61") of precipitation.

Sea temperature

November and December, with an average sea temperature of 30.3°C (86.5°F), are months with the warmest seawater in Rabaul.
Note: When water's temperature exceeds 30°C (86°F), it arguably loses its primary appeal of offering a cool escape.

Daylight

With an average of 12h and 24min of daylight, December has the longest days of the year.
On the first day of December in Rabaul, Papua New Guinea, sunrise is at 05:29 and sunset at 17:50. On the last day of the month, sunrise is at 05:43 and sunset at 18:05 +10.

Sunshine

February, July and December, with an average of 5h of sunshine, are months with the least sunshine in Rabaul.

UV index

The months with the highest UV index are January through May, August through December, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 12 in December leads to these guidelines:
Ensure all key precautions. Defense against sun exposure is critical. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Apply generously and frequently reapply a sunscreen with SPF 30 or more even on cloudy days, particularly after a swim or outdoor exercise. Caution! The Sun's UV intensity grows with reflections off sand and water.

Frequently asked questions

What are the coldest months in Rabaul?

Rabaul experiences its coldest period in January through August, November and December, averaging a high-temperature of 31°C (87.8°F).

How hot is December in Rabaul?

An average high-temperature, in December, in Rabaul, is 31°C (87.8°F) and the average low-temperature is 23°C (73.4°F).

How many days does it rain in December in Rabaul?

In Rabaul, Papua New Guinea, during December, the rain falls for 21 days and regularly aggregates up to 241mm (9.49") of precipitation.

What months are the sea warmest in Rabaul?

November and December, with an average sea temperature of 30.3°C (86.5°F), are months with the warmest seawater.

What is the sea water temperature in December in Rabaul?

In December, the average sea temperature in Rabaul, Papua New Guinea, is 30.3°C (86.5°F). The water temperature above 30°C (86°F) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

When are the longest days in Rabaul?

The month with the longest days in Rabaul, Papua New Guinea, is December, with an average of 12h and 24min of daylight.

How many hours of daylight does Rabaul have in December?

The average day length in December is 12h and 22min.

When are sunrise and sunset in December in Rabaul?

In December, on the first day of the month, sunrise is at 05:29 and sunset at 17:50. On the last day of the month, sunrise is at 05:43 and sunset at 18:05 +10.

What are the months with the least sunshine in Rabaul?

The months with the least sunshine in Rabaul are February, July and December, with an average of 5h of sunshine.

How long on average sun shines in December in Rabaul?

The average sunshine duration in December in Rabaul, Papua New Guinea, is 5h.

What are the months with the highest UV index in Rabaul?

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index in Rabaul.

What is the UV index reading in December in Rabaul?

The average daily maximum UV index in December in Rabaul, Papua New Guinea, is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Rabaul, Papua New Guinea

Average temperature in December - Rabaul, Papua New Guinea
  • Average high temperature in December: 31°C

The warmest months (with the highest average high temperature) are September and October (32°C).
The months with the lowest average high temperature are January, February, March, April, May, June, July, August, November and December (31°C).

  • Average low temperature in December: 23°C

The months with the highest average low temperature are January, February, March, April, May, June, July, August, September, October, November and December (23°C).
The coldest months (with the lowest average low temperature) are January, February, March, April, May, June, July, August, September, October, November and December (23°C).

Average rainfall in December
Rabaul, Papua New Guinea

Average rainfall in December - Rabaul, Papua New Guinea
  • Average rainfall in December: 241mm

The wettest month (with the highest rainfall) is March (257mm).
The driest month (with the least rainfall) is September (91mm).

Average rainfall days in December
Rabaul, Papua New Guinea

Average rainfall days in December - Rabaul, Papua New Guinea
  • Average rainfall days in December: 21 days

The months with the highest number of rainy days are January, March and April (22 days).
The months with the least rainy days are June, August and September (19 days).

Average sea temperature in December
Rabaul, Papua New Guinea

Average sea temperature in December - Rabaul, Papua New Guinea
  • Average sea temperature in December: 30.3°C

The best months for swimming (with the highest average sea temperature) are November and December (30.3°C).
The coldest month (with the lowest average sea temperature) is August (29.1°C).

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

Average daylight in December / Average sunshine in December - Rabaul, Papua New Guinea
  • Average daylight in December: 12h and 2min

The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 54min).

  • Average sunshine in December: 5h

The months with the most sunshine are January, March, April, May, June, August, September, October and November (Average sunshine: 6h).
The months with the least sunshine are February, July and December (Average sunshine: 5h).

Average UV index in December
Rabaul, Papua New Guinea

Average UV index in December - Rabaul, Papua New Guinea
  • Average UV index in December: 12

The months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 11).

Rabaul, Papua New Guinea

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