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

Entering December, the average high-temperature is recorded at an agreeable 73°F (22.8°C), exhibiting a minimal shift from November's 75.9°F (24.4°C). Throughout December, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 64.9°F (18.3°C).

Rainfall

In Midway Atoll, in December, it is raining for 16 days, with typically 4.09" (104mm) of accumulated 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 Midway Atoll, the average seawater temperature in December is 71.6°F (22°C).
Note: Every individual's cold threshold differs, but factors like today's sunshine, wind, and temperature can tip the scales for a delightful swim in 71.6°F (22°C) waters. For reference, Olympians swim in waters of 77°F (25°C) to 82.4°F (28°C).

Daylight

The month with the shortest days in Midway Atoll 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

In December, the average sunshine is 15h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: During December, 5 as the daily maximum UV index converts into the following advice:
Take necessary precautions - Defending against sun damage is advocated. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be wary! Reflections from sand and water make UV radiation more intense.