Is the weather good in Japan in December 2025?
For the past few decades, the average daily temperatures in Japan during December have been around +13°C.
The weather differs across the Japan in December. You may encounter maximum temperatures of +13°C at noon in Okinawa and +9°C in Osaka. So plan your activities, and packing, based on the individual locations rather than the country as a whole.
Temperature, wind and humidity in December
- rainiest? Okinawa, with an average of 4 mm of rain and humidity of 69%;
- warmest? Okinawa, with daytime temperatures averaging +20°C;
- windiest? Okinawa, with an average of 5 m/s;
- coolest? Osaka, with daytime temperatures averaging +9°C;
How good is the weather in Japan in December?
How warm is it in Japan during December?
This is how hot it usually is in December
- Average maximum temperature for the month: +13°C;
- Average minimum temperature for the month: +6°C;
- Highest monthly temperature: +15°C;
- Lowest monthly temperature: +4°C;
Monthly temperatures:
- Warmest: August with an average +31°C during the day;
- Coldest: January with an average +10°C of the day;
- Hottest month in hottest city: July in Okinawa;
- Coldest month in coolest city: January in Osaka;
Winds in Japan during December
December tends to offer light winds averaging 3 m/s. However, coastal cities may experience breezes during the mornings and afternoons.
Comparison between cities in December:
- Highest average wind speed: Tokyo with 4 m/s;
- Lowest average wind speed: Fukuoka with 2 m/s;
- Windiest day of the month: Okinawa with 5 m/s;
- The least windy day of the month: Fukuoka with 2 m/s;
Humidity and precipitation in Japan in December
Comparison between cities in December:
- Highest average rainfall: Okinawa with 124 mm;
- Lowest average rainfall: Nagoya with 45 mm;
- Most number of rainy days: Okinawa with 18 rainy days;
- Least number of rainy days: Nagoya with 9 rainy days;
- Highest risk of rain during the day: Okinawa with 58%;
- Least risk of rain during the day: Nagoya with 29%;
- Highest average humidity: Osaka with 73%;
- Lowest average humidity: Tokyo with 54%;
Tips for traveling to Japan in December
Looking for some tips for traveling to the sun, snow, or whatever you're aiming for Japan? Activities, weather, and clothing are closely linked. In addition, it's important to pack only what you really need so you don't have to worry about heavy packing or paying extra baggage fees.
Here is some advice on what to pack and what kind of activities you can do in the Japan based on the weather that December is expected to bring. The advice applies to the country as a whole – local weather and possible activities may differ somewhat.
Pack right for December
- For light showers, an umbrella or a thin and light rain cape is usually sufficient, while more rain may require rainwear and rain boots.
- Cool weather is between warm and cold. This means you can bring long pants and/or a longer skirt and an extra sweater. Be aware that cool days can alternate with cold nights - it may be wise to also pack a hat, gloves and a scarf.
- Light winds are probably most comfortable in hot weather but is cooling in cool and cold weather. If it is hot (when the air temperature is about 30 degrees), the wind can have a warming effect. A thin, windproof jacket and long trousers help to counteract these effects.
- High humidity means that the air conducts heat to and from the skin more easily. For example, if the air is hot (above skin temperature), it will be harder to stay cool. On the other hand, if the air is cool or cold, it is more difficult to stay warm. In high humidity, the choice of clothing makes less of a difference. However, your physical activity plays a bigger role.
FAQ
What can you do outside when it's warm in Japan?
Is December a good time to visit Japan?
Monthly weather in Japan
Source of the data
For this page, we’ve looked at the typical weather in Japan, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
