December weather forecast and climate
Ishigaki, Japan

What is the temperature in December in Ishigaki?

In Ishigaki, in December, the average high-temperature is 22°C (71.6°F), and the average low-temperature is 17°C (62.6°F).

How much does it rain in Ishigaki in December?

In Ishigaki, in December, it is raining for 24 days, with typically 146mm (5.7") of accumulated precipitation.

What is the sea water temperature in December in Ishigaki?

In December, the average sea temperature is 25°C (77°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.
Average temperature in December - Ishigaki, Japan
  • Average high temperature in December: 22°C

The warmest month (with the highest average high temperature) is July (32°C).
The month with the lowest average high temperature is January (20°C).

  • Average low temperature in December: 17°C

The month with the highest average low temperature is July (27°C).
The coldest month (with the lowest average low temperature) is January (15°C).

Average rainfall in December - Ishigaki, Japan
  • Average rainfall in December: 146mm

The wettest month (with the highest rainfall) is September (237mm).
The driest month (with the lowest rainfall) is February (140mm).

Average rainfall days in December - Ishigaki, Japan
  • Average rainfall days in December: 24 days

Months with the highest number of rainy days are January, November and December (24 days).
Months with the lowest number of rainy days are April, June and July (20 days).

Average sea temperature in December - Ishigaki, Japan
  • Average sea temperature in December: 25°C

Best months for swimming (with the highest average sea temperature) are July, August and September (29°C).
Coldest months (with the lowest average sea temperature) are January and February (23°C).

Average daylight in December / Average sunshine in December - Ishigaki, Japan
  • Average daylight in December: 10.6h

The month with the longest days is June (Average daylight: 13.6h).
The month with shortest days is December (Average daylight: 10.6h).

  • Average sunshine in December: 3h

The month with most sunshine is July (Average sunshine: 8h).
Months with least sunshine are January, February, March, November and December (Average sunshine: 3).

Average UV index in December - Ishigaki, Japan
  • Average UV index in December: 6

Months with the highest UV index are April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).

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