December weather forecast
Pago Pago, AS

In December, Pago witnesses a further increase in rainfall, amounting to 5.91" (150mm), making it the wettest month of the year. The month also sees higher high and low temperatures. Despite the increase in rain, the sea temperature continues to be inviting for water activities. Though daylight hours decrease slightly, the sunny intervals serve as good compensation, promising beautiful sunsets to round off the year.

Temperature

December denotes a minimal variation in the average high-temperature to a still warm 83.1°F (28.4°C) from November's 82.9°F (28.3°C). Pago maintains an average of approximately a still moderately hot 81.9°F (27.7°C) during December nights, with only a minimal decrease from the daytime temperature.

Heat index

The heat index value during December is appraised at a hot 89.6°F (32°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

The average relative humidity in December is 76%.

Rainfall

In Pago, in December, during 25.2 rainfall days, 5.91" (150mm) of precipitation is typically accumulated. In Pago, during the entire year, the rain falls for 280 days and collects up to 49.96" (1269mm) of precipitation.

Ocean temperature

In Pago, in December, the average water temperature is 85.1°F (29.5°C).
Note: Between the temperatures of 77°F (25°C) and 84.2°F (29°C), water is considered very warm, providing pleasure in water activities without discomfort over lengthy periods.

Daylight

With an average of 13h and 0min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 5:44 am and sunset at 6:39 pm. On the last day of December, sunrise is at 5:57 am and sunset at 6:55 pm SST.

Sunshine

December has the most sunshine of the year, with an average of 9.7h of sunshine.

UV index

The months with the highest UV index in Pago are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 7 in December translates into the following instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Attention! The combination of sand and water reflections enhances UV ray intensity.