Nikko Weather in December

 Season: Winter
 Overview: 
1. December in Nikko marks the true arrival of winter: cold and dry. 
2. The day-night temperature difference is quite huge, making layering dressing essential. 
3. It is off season in Nikko, with fewer tourists and cheaper hotels. 

Cold Climate 

Nikko’s weather in December is quite cold, with an average temperature ranging from -4-5°C (25-41°F), showing the arrival of winter season. 

In the first half of December, Nikko offers slightly milder days, with highest temperatures ranging from -1-10°C (30-50°F). During midday, when the sun reaches its peak, the highest temperature can briefly reach about 12 degrees Celsius (54 degrees Fahrenheit). 

Late December pushes the average down to -4-6°C (25-43°F). During this period, daytime temperatures are often below freezing. On cloudy and snowy days, the lowest temperature on daytime hours can plummet to -9°C (15°F). When the sun is out, it brings a gentle warm feeling, with highs of 0-4°C (32-39°F). 

Nikko also has a large day-night temperature swing in December - up to 12 degrees Celsius (54 degrees Fahrenheit) - so layered clothing is essential to stay comfortable throughout the day.

In the mountain areas around Lake Chuzenji and Kegon Falls, it is even colder, with lows often down to -5°C (23°F). A warm down jacket is a must if you plan to explore these spots.

Cold Weather in December

Very Little Snow, Low Humidity 

December is Nikko’s driest month, with only 41 mm of precipitation from 7 days or so. Most of it falls as light snow, though a little rain may occur when temperatures rise slightly. While the snow falls, the top of distant mountains visible from Lake Chuzenji is capped in white, creating breathtaking winter scenery. 

Do note that in Oku-Nikko’s higher elevations, roads can become icy, so walk carefully. 

With so little precipitation, the air is crisp and dry, with the average humidity level of about 68 %. The dry air is ideal for hikes and outdoor sightseeing, but if you are sensitive to dryness, consider bringing a mask or moisturizer to stay comfortable. 

Lake Chuzenji in December

Sunshine Hours & Daytime Hours 

Sunshine Hours: about 5 hours
Sunrise: 6:35-6:53
Sunset: 16:25-16:35
Daytime Hours: 9 hours 39 minutes - 9 hours 50 minutes

December offers plenty of bright, sunny days with weak UV levels - max UV index: 2, perfect for outdoor activities and photography. 

The shortcoming is the shortest daylight hours of the year - less than 10 hours. To make the most of your trip, schedule your key activities earlier in the day. A smart choice is to book a stay at a hot spring hotel. After sunset, you can soak in steaming onsen baths instead of worrying about limited evening options. If you’re going to chase sunset, try to book a hotel close to your chosen viewing spot, as walking back after dark in the mountain area can be tricky due to limited lamps. 

Street Scene on Sunny Days

Is Nikko Worth It in December?

Yes, December is suitable for visiting Nikko. 

Although Nikko’s climate is quite cold in December, crisp air and abundant sunshine offers relatively comfortable conditions for outdoor activities. Besides, there are fewer tourists and lower hotel rates this month, which is a huge advantage of visiting Nikko this month. 

What to Wear in December 

 Upper body: Heat-retaining base layer topped with a thick sweater or hoodie, plus a down jacket. A 3-in-1 winter jacket also works well. 

 Lower body: Jeans paired with thermal tights help legs to keep warm. 

 Footwear: Non-slip sneakers are fine for the town, but for mountain trails, snow boots or comfortable hiking shoes are highly recommended. 

 Accessories: Gloves, scarves, and hats are essential for warmth. 

Travel Recommendations and Advice

1. Enjoy the off-season calm: December is low season in Nikko, making it an excellent time to visit UNESCO World Heritage sites like Toshogu Shrine and Rinnoji Temple without the usual crowds. 
2. Visit Kegon and Ryuzu Falls: While less powerful than in summer, the frozen edges against snowy mountain backdrop provides uniquely stunning view in winter. 
3. Soak in the Kinugawa Onsen or Yunishigawa Onsen: Located in the mountain area, these two hot springs provides stunning snowy view, while you can have an enjoyable hot spring bathing. 
4. Book accommodation in advance: Even though it’s off-season, hotels near popular spots are still filled up quickly, especially on weekends, so reserve one early. 

Frozen Waterfall

Nikko Weather by Month