December weather forecast
Koror, Palau

In December, high temperatures drop slightly to 28.9°C (84°F) compared to November's 29.1°C (84.4°F), marking the onset of slightly cooler atmospheric conditions in Koror. This month manifests as a confluence of various weather conditions, closing the year with a blend of elevated humidity, mild temperature fluctuations, and steady sea temperatures. Despite minor alterations in basic indicators, the stability of Koror's weather pattern stands out. The cooler atmosphere along with the highest rainfall days of the year at 27.8 days evokes a beautiful sense of tranquillity. By upholding its tropical charm, December in Koror elegantly bids farewell to the year, setting the stage for another cycle of exquisite weather events.

Temperature

The start of December marks an average high-temperature of a still moderately hot 28.9°C (84°F), hardly distinguishable from the conditions in November. In December, Koror temperatures settle at a low of 28.2°C (82.8°F) during the nights, reflecting a minor change from daytime highs.

Heat index

December's mean heat index is computed to be a tropical 34°C (93.2°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

In Koror, the average relative humidity in December is 77%.

Rainfall

In December, in Koror, Palau, the rain falls for 27.8 days. Throughout December, 199mm (7.83") of precipitation is accumulated. Throughout the year, in Koror, there are 303.8 rainfall days, and 2074mm (81.65") of precipitation is accumulated.

Sea temperature

April through December, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

December has the shortest days of the year, with an average of 11h and 42min of daylight.
On the first day of December in Koror, sunrise is at 05:59 and sunset at 17:43. On the last day of the month, sunrise is at 06:13 and sunset at 17:56 +09.

Sunshine

With an average of 6.1h of sunshine, December has the least sunshine of the year.

UV index

The months with the highest UV index in Koror, Palau, are February through August, October and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: A typical high UV index of 7 in December suggests the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Attention! UV radiation is markedly stronger with water and sand reflections.