December weather forecast
Nuku'alofa, Tonga

The Rugged scenic shores of Nuku
The Rugged scenic shores of Nuku'alofa in Tonga, with a beautiful clear waterfront

Weather in December

The first month of the summer, December, is still a warm month in Nuku'alofa, Tonga, with temperature in the range of an average high of 28.7°C (83.7°F) and an average low of 22.5°C (72.5°F).

Temperature

In December, the average high-temperature is essentially the same as in November - a still moderately hot 28.7°C (83.7°F). In December, the average low-temperature is 22.5°C (72.5°F).

Heat index

The average heat index in December is appraised at a tropical 33°C (91.4°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. 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', 'real feel', 'feels like', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, clothing, wind), and activity. 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.

Humidity

In Nuku'alofa, the average relative humidity in December is 75%.

Rainfall

In December, in Nuku'alofa, the rain falls for 15 days. Throughout December, 175mm (6.89") of precipitation is accumulated. In Nuku'alofa, during the entire year, the rain falls for 180 days and collects up to 1721mm (67.76") of precipitation.

Sea temperature

In Nuku'alofa, the average seawater temperature in December is 26.6°C (79.9°F).
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

The month with the longest days in Nuku'alofa is December, with an average of 13h and 24min of daylight.
On the first day of December in Nuku'alofa, Tonga, sunrise is at 05:50 and sunset at 19:09. On the last day of the month, sunrise is at 06:02 and sunset at 19:25 +13.

Sunshine

In December, the average sunshine is 12h.

UV index

January through March, November and December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 12 in December transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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.
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FAQ

What is the temperature in December in Nuku'alofa?

In Nuku'alofa, in December, the average high-temperature is 28.7°C (83.7°F), and the average low-temperature is 22.5°C (72.5°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in December is appraised at 33°C (91.4°F).

What is the average humidity in December in Nuku'alofa?

The average relative humidity in December in Nuku'alofa, Tonga, is 75%.

How many days does it rain in December in Nuku'alofa?

In Nuku'alofa, Tonga, in December, it is raining for 15 days, with typically 175mm (6.89") of accumulated precipitation.

What is the water temperature in December in Nuku'alofa?

In December, the average sea temperature in Nuku'alofa is 26.6°C (79.9°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.

When are the longest days in Nuku'alofa?

With an average of 13h and 24min of daylight, December has the longest days of the year in Nuku'alofa, Tonga.

How many hours of daylight does Nuku'alofa have in December?

In December, the average day length in Nuku'alofa is 13h and 24min.

When are sunrise and sunset in December in Nuku'alofa?

On the first day of December, sunrise is at 05:50 and sunset at 19:09. On the last day of the month, sunrise is at 06:02 and sunset at 19:25 +13.

How long on average sun shines in December in Nuku'alofa?

In December, the average sunshine duration in Nuku'alofa is 12h.

When is the highest UV index in Nuku'alofa?

The months with the highest UV index in Nuku'alofa are January through March, November and December, with an average maximum UV index of 12.

What is the UV index reading in December in Nuku'alofa?

In Nuku'alofa, Tonga, the average daily maximum UV index in December is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in December
Nuku'alofa, Tonga

Average temperature in December - Nuku
  • Average high temperature in December: 28.7°C

The warmest month (with the highest average high temperature) is February (29.9°C).
The month with the lowest average high temperature is August (24.8°C).

  • Average low temperature in December: 22.5°C

The month with the highest average low temperature is February (23.7°C).
The coldest month (with the lowest average low temperature) is July (18.1°C).

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Average humidity in December
Nuku'alofa, Tonga

Average humidity in December - Nuku
  • Average humidity in December: 75%

The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is November (73%).

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Average rainfall in December
Nuku'alofa, Tonga

Average rainfall in December - Nuku
  • Average rainfall in December: 175mm

The wettest month (with the highest rainfall) is February (210mm).
The driest months (with the least rainfall) are June and July (95mm).

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Average rainfall days in December
Nuku'alofa, Tonga

Average rainfall days in December - Nuku
  • Average rainfall days in December: 15 days

The months with the highest number of rainy days are February and March (19 days).
The month with the least rainy days is October (11 days).

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Average sea temperature in December
Nuku'alofa, Tonga

Average sea temperature in December - Nuku
  • Average sea temperature in December: 26.6°C

The best month for swimming (with the highest average sea temperature) is March (28.1°C).
The coldest months (with the lowest average sea temperature) are August and September (23.8°C).

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Average daylight in December /
Average sunshine in December
Nuku'alofa, Tonga

Average daylight in December / Average sunshine in December - Nuku
  • Average daylight in December: 13h and 24min

The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 52min).

  • Average sunshine in December: 12h

The months with the most sunshine are January and March (Average sunshine: 18h).
The month with the least sunshine is August (Average sunshine: 3h).

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Average UV index in December
Nuku'alofa, Tonga

Average UV index in December - Nuku
  • Average UV index in December: 12

The months with the highest UV index are January, February, March, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 6).

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