December weather forecast
Koloa, Tonga

Koloa, Tonga closes the year in December, firmly into its wet season. A substantial increase in rainfall brings the totals to 139mm (5.47"), a jump from November's 80mm (3.15"). December ushers in heat, humidity and increased cloud cover, a pattern reminiscent of January. Occasional thunderstorms demonstrate the power and beauty of the tropical climate. As the year comes to a close, Koloa's weather accentuates its status as a radiant tropical paradise, capturing the fascination of both locals and visitors.

Temperature

As November turns into December, the average high-temperatures rest at a still warm 27.1°C (80.8°F), showing a minor variation from the prior month. Koloa records a slight downturn in temperature to an average of 26.4°C (79.5°F) during December nights.

Heat index

The average heat index in December is calculated to be a tropical 30°C (86°F). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

In Koloa, the average relative humidity in December is 78%.

Rainfall

In Koloa, in December, it is raining for 22.2 days, with typically 139mm (5.47") of accumulated precipitation. In Koloa, during the entire year, the rain falls for 227.2 days and collects up to 1333mm (52.48") of precipitation.

Daylight

With an average of 13h and 12min of daylight, December has the longest days of the year in Koloa.
On the first day of December in Koloa, sunrise is at 05:49 and sunset at 19:00. On the last day of the month, sunrise is at 06:02 and sunset at 19:16 +13.

Sunshine

December has the most sunshine of the year, with an average of 8.2h of sunshine.

UV index

January through April and December, with an average maximum UV index of 7, are months with the highest UV index in Koloa, Tonga. 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 maximum daily UV index, 7 in December, converts into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.