December weather forecast
Midway Atoll, Midway Island, USA

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Weather in December

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

The arrival of December sees a recorded average high-temperature of a pleasant 73°F (22.8°C), showing little divergence from the previous month's conditions. Midway Atoll maintains a near steady average temperature of 64.9°F (18.3°C) during the nights of December, demonstrating little drop 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. Throughout the year, in Midway Atoll, there are 160 rainfall days, and 41.3" (1049mm) of precipitation is accumulated.

Ocean temperature

In Midway Atoll, the average seawater temperature in December is 71.6°F (22°C).
Note: Given an individual's cold sensitivity, considering factors like sunshine, wind, and air temperature, a brief swim in 71.6°F (22°C) water might be pleasurable. (FYI: The standard water temperature for Olympic swimming contests is 77°F (25°C) to 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 the month, sunrise is at 7:24 am and sunset at 5:53 pm. On the last day of December, in Midway Atoll, Midway Island, sunrise is at 7:41 am and sunset at 6:04 pm SST.

Sunshine

In Midway Atoll, the average sunshine in December 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 reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 5 transforms into these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. It's recommended to limit sun exposure when its radiation is at its peak during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Watch out! Sand and water enhance the UV exposure you receive.
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Frequently asked questions

What are December temperatures in Midway Atoll?

The high-temperature, in December, in Midway Atoll, records 73°F (22.8°C), while the low-temperature is 64.9°F (18.3°C).

How many days does it rain in December in Midway Atoll?

In Midway Atoll, Midway Island, in December, it is raining for 16 days, with typically 4.09" (104mm) of accumulated precipitation.

How warm is the water in December in Midway Atoll?

In Midway Atoll, Midway Island, the average seawater temperature in December is 71.6°F (22°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 71.6°F (22°C).

What is the month with the shortest days in Midway Atoll?

December has the shortest days of the year in Midway Atoll, Midway Island, with an average of 10h and 24min of daylight.

What is the average length of the day in December in Midway Atoll?

The average day length in December is 10h and 23min.

When is the sunrise / sunset in December in Midway Atoll?

On the first day of December in Midway Atoll, Midway Island, 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.

How many hours of sunshine does Midway Atoll have in December?

In Midway Atoll, Midway Island, the average sunshine duration in December is 15h.

What are the months with the lowest UV index in Midway Atoll?

January and December, with an average maximum UV index of 5, are months with the lowest UV index in Midway Atoll, Midway Island.

How high is the UV index in December in Midway Atoll?

In December, the average daily maximum UV index in Midway Atoll is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Midway Atoll, Midway Island, USA

Average temperature in December - Midway Atoll, Midway Island, USA
  • Average high temperature in December: 73°F

The warmest months (with the highest average high temperature) are August and September (84°F).
The months with the lowest average high temperature are January and February (70°F).

  • Average low temperature in December: 65°F

The months with the highest average low temperature are July, August and September (75°F).
The coldest months (with the lowest average low temperature) are January and February (62°F).

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Average rainfall in December
Midway Atoll, Midway Island, USA

Average rainfall in December - Midway Atoll, Midway Island, USA
  • Average rainfall in December: 4.1"

The wettest month (with the highest rainfall) is January (5").
The driest month (with the least rainfall) is June (2.2").

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Average rainfall days in December
Midway Atoll, Midway Island, USA

Average rainfall days in December - Midway Atoll, Midway Island, USA
  • Average rainfall days in December: 16 days

The months with the highest number of rainy days are January and December (16 days).
The months with the least rainy days are May and June (9 days).

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Average sea temperature in December
Midway Atoll, Midway Island, USA

Average sea temperature in December - Midway Atoll, Midway Island, USA
  • Average sea temperature in December: 72°F

The best months for swimming (with the highest average sea temperature) are August and September (81°F).
The coldest months (with the lowest average sea temperature) are January, February and March (68°F).

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Average daylight in December /
Average sunshine in December
Midway Atoll, Midway Island, USA

Average daylight in December / Average sunshine in December - Midway Atoll, Midway Island, USA
  • Average daylight in December: 10h and 2min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in December: 15h

The months with the most sunshine are July, September and October (Average sunshine: 18h).
The months with the least sunshine are January and February (Average sunshine: 14h).

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Average UV index in December
Midway Atoll, Midway Island, USA

Average UV index in December - Midway Atoll, Midway Island, USA
  • Average UV index in December: 5

The months with the highest UV index are June, July and August (UV index 11).
The months with the lowest UV index are January and December (UV index 5).

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Midway Atoll, Midway Island, USA

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