Miyakojima in December: weather, what to wear and what's on

Averages for 1991–2020 at the JMA's Miyakojima station (38 m above sea level).

High

22.2°C (72°F)

Low

18.2°C (65°F)

Precipitation

147.2 mm

Wet days

11.9 days

Sunshine

93 hours

• Highs fall 3.1°C from November and drop another 1.6°C into January.
• That is 4.2°C below Miyakojima's yearly average high of 26.4°C.
• Of our 34 places with temperature records, Miyakojima is the 2nd warmest in December: 0.8°C cooler than Ishigaki and 0.7°C warmer than Naha.
• December is Miyakojima's 5th driest month (147.2 mm).
• Of our 35 places, Miyakojima has the 8th highest precipitation in December: 8.0 mm less than Aomori and 32.7 mm more than Sapporo.
• Rain of 1 mm or more falls on 11.9 days, and 10 mm or more on 4.6 days.
• Rain of 30 mm or more in one day falls on 1.1 days, and 50 mm or more on 0.5 days.
• The sun is out for 40% or more of the possible hours on 10.1 days, and 6.8 days have under 0.1 hours of sunshine.

Average temperature

20.0°C (68°F)

Humidity

71%

Days of 25°C or more

4.4 days

Early, mid and late December

By the last ten days of December the average high in Miyakojima is 1.7°C lower than in the first ten.

Is Miyakojima cold in December?

No, it is mild. Miyakojima averages 22.2°C (72°F) by day and 18.2°C (65°F) at night in December. It gets colder still: 21–31 January has highs of 20.2°C.

Mild: highs around 22.2°C

• Long sleeves, or a T-shirt with a light jacket or cardigan.
• An umbrella: rain falls on 11.9 days.

Pack

• Umbrella

• Our clothing rules

There are no national holidays in December 2026.

In December 2025, hotels and inns across Okinawa Prefecture were 51.9% full on average (the quietest month of the year). Foreign guests spent 519,750 nights there that month (Japan Tourism Agency). That compares with 61.3% in November and 52.5% in January.

• Japan in December: visitor numbers and busy travel days
• Holidays in December
• Year-end and New Year holidays