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

Averages for 1991–2020 at the JMA's Ishigakijima station (6 m above sea level).

High

23.0°C (73°F)

Low

18.4°C (65°F)

Precipitation

155.2 mm

Wet days

12.3 days

Sunshine

89 hours

• Highs fall 3.2°C from November and drop another 1.5°C into January.
• That is 4.2°C below Ishigaki's yearly average high of 27.2°C.
• Of our 34 places with temperature records, Ishigaki is the warmest in December, 0.8°C warmer than Miyakojima.
• December is Ishigaki's 6th wettest month (155.2 mm).
• Of our 35 places, Ishigaki has the 6th highest precipitation in December: 70.7 mm less than Niigata and 0.0 mm more than Aomori.
• Rain of 1 mm or more falls on 12.3 days, and 10 mm or more on 4.0 days.
• Rain of 30 mm or more in one day falls on 1.4 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 7.6 days have under 0.1 hours of sunshine.

Average temperature

20.5°C (69°F)

Humidity

71%

Days of 25°C or more

7.8 days

Early, mid and late December

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

By ten-day totals, 11–20 December is the wettest (58.9 mm) and 21–31 December the driest (43.1 mm).

Is Ishigaki cold in December?

No, it is mild. Ishigaki averages 23.0°C (73°F) by day and 18.4°C (65°F) at night in December. It gets colder still: 21–31 January has highs of 21.0°C.

Mild: highs around 23.0°C

• Long sleeves, or a T-shirt with a light jacket or cardigan.
• An umbrella: rain falls on 12.3 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