December weather forecast
Midway Atoll, Midway Island, USA

December in Midway Atoll sees temperatures dip to their lowest yearly averages, ranging from 65°F (18.3°C) to 73°F (22.8°C). This month experiences slightly more rainfall than November with 4.1" (104mm) recorded. Despite it being the onset of winter, the relatively mild temperatures create a unique tropical winter experience. A steady decline in the amount of daylight, cooler sea temperatures, and lower UV index further affirm that winter is in session. As December draws to close, the weather patterns are best suited for indoor activities and preparation for welcoming the New Year.

Temperature

Midway Atoll's weather in December indicates an average high-temperature of a pleasant 73°F (22.8°C), nearly consistent with the 75.9°F (24.4°C) of November. Throughout December, Midway Atoll observes a steady low-temperature average of 64.9°F (18.3°C), reflecting a minor dip from daytime highs.

Rainfall

In Midway Atoll, during December, the rain falls for 16 days and regularly aggregates up to 4.09" (104mm) of precipitation. In Midway Atoll, during the entire year, the rain falls for 160 days and collects up to 41.3" (1049mm) of precipitation.

Ocean temperature

In December, the average ocean temperature is 71.6°F (22°C).
Note: While a person's sensitivity to cold is personal, factors like sunshine, wind, and the temperature can influence their comfort in 71.6°F (22°C) waters. Olympians, for perspective, swim in waters between 77°F (25°C) and 82.4°F (28°C).

Daylight

The month with the shortest days is December, with an average of 10h and 24min of daylight.
On the first day of December, sunrise is at 7:24 am and sunset at 5:53 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 6:04 pm SST.

Sunshine

The average sunshine in December is 15h.

UV index

January and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In December, a daily maximum UV index of 5 leads to the following instructions:
Exercise prevention - Warding off sunburn is urged. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take note! Sand and water reflections strengthen the Sun's UV exposure.