December weather forecast
Yap, Micronesia

Wrapping up the year, December weather dynamics in Yap echo those witnessed in November, albeit with minor variations. The rainfall dips further to 228mm (8.98"), indicating dry weather persisting from November. A slight fluctuation in temperature sees the thermometers reading a high of 30.7°C (87.3°F), suggesting consistency in warm climatic conditions. As this month experiences consistent warm temperatures and decreasing rainfall, it offers an excellent opportunity to immerse in various outdoor adventures. With December providing the best of warm temperatures and a drier climate, it indeed serves as an ideal month to conclude a year's travel in Yap, Micronesia.

Temperature

December denotes a minimal variation in the average high-temperature to a still tropical 30.7°C (87.3°F) from November's 30.4°C (86.7°F). In the month of December, an average of 23.7°C (74.7°F) marks the low-temperature in Yap.

Heat index

Throughout December, the heat index is appraised at a blistering 41°C (105.8°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Yap, Micronesia, during December, the rain falls for 17.6 days and regularly aggregates up to 228mm (8.98") of precipitation. In Yap, during the entire year, the rain falls for 211.6 days and collects up to 3050mm (120.08") of precipitation.

Sea temperature

May through December, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Between the temperatures of 25°C (77°F) and 29°C (84.2°F), water is considered very warm, providing pleasure in water activities without discomfort over lengthy periods.

Daylight

December has the shortest days of the year, with an average of 11h and 36min of daylight.
On the first day of December, sunrise is at 06:48 and sunset at 18:24. On the last day of the month, sunrise is at 07:03 and sunset at 18:37 +10.

Sunshine

In December, the average sunshine is 6.4h.

UV index

With an average maximum UV index of 10, December is the month with the lowest UV index in Yap. A UV Index estimate of 8 to 10 represents a very high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 10 in December interprets into the following advice:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Sunscreen of at least SPF 30 should be applied generously and reapplied often on overcast days, especially post swim or outdoor exercise. Notice! The Sun's UV exposure elevates with sand and water reflections.