Weather in Japan in December

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Visiting Japan in December

The weather in December is cooler than the previous month and temperatures continue to drop slightly into January. December has average maximum temperatures of 20°C (67°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 43.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.5 hours of sunshine per day. It is not a good time for sunbathing in Japan.

December has total rainfall of 1.5cm (0.6inches) making it mostly dry with very rare light showers although there are 16 days with some rainfall, so on the days it does rain it is only light and intermittent and shouldn't affect your beach enjoyment too much.

Sea temperatures are a warm 24°C (75°F). December is a good month for swimming in Japan with comfortable temperatures for most people. The sea temperature in December is cooler than the previous month and temperatures continue to drop slightly into January.

Consider visiting Japan in the months of July, August, September, October, for the best beach weather. Also consider one of our other suggestions for December.

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Can you sunbathe in Japan in December?

No, December is not a good time for sunbathing in Japan.

December has average maximum temperatures of 20°C (67°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 43.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.5 hours of sunshine per day. December has total rainfall of 1.5cm (0.6inches) making it mostly dry with very rare light showers although there are 16 days with some rainfall, so on the days it does rain it is only light and intermittent and shouldn't affect your beach enjoyment too much.

More about December temperature and sunshine.

Can you swim in Japan in December?

Yes, December is a good month for swimming in Japan with warm sea temperatures 24°C (75°F).

More about December sea temperatures.

Is December a good time to holiday in Japan?

Yes, December is a good time for a holiday in Japan.

December has average maximum temperatures of 20°C (67°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 43.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.5 hours of sunshine per day. December has total rainfall of 1.5cm (0.6inches) making it mostly dry with very rare light showers although there are 16 days with some rainfall, so on the days it does rain it is only light and intermittent and shouldn't affect your beach enjoyment too much. It is not a good time for sunbathing in Japan. Sea temperatures are a warm 24°C (75°F). December is a good month for swimming in Japan with comfortable temperatures for most people.

More about the December temperatures and sunshine.

Is Japan warm in December?

Yes, Japan is not that warm but sunbathing may be possible on some clear days in December.

The average maximum temperature in Japan in December is 20°C (67°F). The average maximum temperature is 24°C (75°) in the previous month and 18°C (65°F) in the next month.

The average temperature in Japan in December is 18°C (64°F). The average temperature is 22°C (71°F) in the previous month and 16°C (61°F) in the next month.

More info about the December temperatures and sunshine.

How sunny is Japan in December?

The average day light hours per day in Japan in December are 10.5. The sunshine percentage is 43.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.5 hours of sunshine per day.

More about December sunshine.

Temperature in Japan in December

The weather in December is cooler than the previous month and temperatures continue to drop slightly into January. The average maximum temperature in Japan in December is 20°C (67°F). The average maximum temperature is 24°C (75°F) in the previous month and 18°C (65°F) in the next month.

The average temperature in Japan in December is 18°C (64°F). The average temperature is 22°C (71°F) in the previous month and 16°C (61°F) in the next month.

The average minimum temperature in Japan in December is 16°C (60°F). The minimum temperature is 20°C (67°F) in the previous month and 14°C (57°F) in the next month.

Sunshine in Japan in December

The days in December are slightly shorter than the previous month. December has slightly less hours of sunshine than the previous month. During December the average day light hours are 10.5 per day in Japan. The sunshine percentage is 43.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.5 hours of sunshine per day.

The ultraviolet index in Japan in December is typically 5.3 during December. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Japan in December

The average sea water temperature in Japan in December is 23.7°C (74.7°F) which is warm and pleasant for relaxing and swimming for long periods. The sea temperature in December is cooler than the previous month and temperatures continue to drop slightly into January.

Rainfall in Japan in December

December weather is slightly wetter than the previous month. December has a couple of more days of rain than the previous month and rainy days continue to rise slightly into January. The average total rainfall in Japan in December is 1.5cm (0.6inches) and on average there are 16 rainy days in December making it a wet time to visit the beach.

Humidity in Japan in December

The maximum dew point (an indicator of humidity) in Japan in December is 13°C (56°F) which is comfortable for everyone. The dew point is 18°C (64°F) in the previous month and 12°C (12°F) in the next month.

The average maximum relative humidity in Japan in December is typically 78.9%. The maximum relative humidity is 81.7% in the previous month and 80.4% in the next month.

The average relative humidity in Japan in December is typically 66.7%. The average relative humidity is 70.4% in the previous month and 68.6% in the next month.

Wind Speed in Japan in December

The average maximum wind speed in Japan in December is typically 29KM/H (18MPH). The average maximum wind speed is 28KM/H (17MPH) in the previous month and 28KM/H (17MPH) in the next month.

The average wind speed in Japan in December is typically 20KM/H (13MPH). The average wind speed is 20KM/H (12MPH) in the previous month and 20KM/H (12MPH) in the next month.

The average wind direction in Japan in December is from the East.

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Monthly Averages

Suggested Beaches in December

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.