Japan Travel in December: Weather, Etiquette, and Packing Tips for a Smooth Trip

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Contents
  1. Introduction
  2. What’s Japan Like in December? – Weather & Atmosphere
  3. What to Pack for Japan in December
  4. Japanese Etiquette Every Traveler Should Know
  5. Seasonal Events & Traditions in December
  6. Transportation Tips for Winter Travel
  7. Staying Connected – Internet & Communication
  8. Recommended Destinations in December
  9. Conclusion
  10. Recommended eSIM Service

Introduction

Thinking about visiting Japan at the end of the year? December is one of the most magical times to travel to Japan. From sparkling Christmas lights in Tokyo to traditional New Year’s celebrations at shrines and temples, you’ll get a unique mix of modern and ancient culture.

But to make the most of your trip, it’s important to know what the weather is like, what to pack, and how to follow Japanese etiquette. This guide covers everything you need—so you can enjoy your winter holiday in Japan stress-free.

What’s Japan Like in December? – Weather & Atmosphere

December in Japan is crisp, festive, and filled with energy. Here’s what to expect:

  • Tokyo and Osaka: Average daytime temperatures range between 40°F–55°F (5°C–13°C). Nights get colder, so pack warm clothes.

  • Kyoto: Slightly colder than Tokyo, with frosty mornings.

  • Hokkaido (Sapporo, Niseko, etc.): Full winter mode. Heavy snow, skiing season in full swing, temperatures can drop below 20°F (-6°C).

What makes December special:

  • Illuminations: Japanese cities put up stunning light displays, especially in Tokyo, Osaka, and Kobe.

  • Holiday Vibes: While Christmas isn’t a religious holiday in Japan, it’s celebrated with decorations, couples’ dates, and even KFC dinners (a quirky Japanese tradition).

  • Year-End Rush: Expect busy trains, shops, and airports as locals travel to their hometowns for New Year.

What to Pack for Japan in December

Packing smart makes your trip much easier.

Clothing Essentials

  • A warm winter coat

  • Layers (sweaters, thermal shirts, and T-shirts for indoors)

  • Scarf, gloves, and hat (especially for Kyoto or northern Japan)

  • Comfortable walking shoes—temples, shrines, and cities involve lots of walking

Travel Essentials

  • Portable power bank: You’ll use your phone for maps, tickets, and photos all day.

  • eSIM: Staying connected makes travel smooth. With Rakusim’s prepaid eSIM, visitors can easily get reliable data in Japan without picking up or returning a device.

  • Cash: Japan is still cash-friendly. Many small shops and shrines don’t take cards.

  • Reusable bag: Japan has strict waste rules, and plastic bags often cost extra.

Japanese Etiquette Every Traveler Should Know

Japanese culture values respect and harmony. Following basic etiquette will make your trip smoother and more enjoyable.

Public Transportation

  • Stay quiet on trains—phone calls are considered rude.

  • Always stand in line when boarding trains and buses.

  • Give up your seat in the priority area to elderly, disabled, or pregnant passengers.

Dining Etiquette

  • No tipping! Good service is included in the price.

  • Don’t stick chopsticks upright into rice—it’s associated with funerals.

  • Slurping noodles is perfectly okay—it shows you’re enjoying your meal!

At Shrines and Temples

  • Purify your hands and mouth at the entrance water basin.

  • Bow before entering the main shrine.

  • Don’t walk in the center of the path—it’s considered the gods’ path.

General Tips

  • Dispose of trash properly. Garbage bins are rare, so carry your trash until you find one.

  • Be punctual—whether meeting friends or joining tours, being on time is seen as respectful.

Seasonal Events & Traditions in December

December is full of events you won’t see any other time of the year.

  • Christmas in Japan: Expect romantic lights, shopping deals, and Christmas cakes. It’s a couple’s holiday, not a family one.

  • Ōmisoka (New Year’s Eve): On December 31st, temples ring bells 108 times to cleanse sins. Eating toshikoshi soba (year-crossing noodles) is a tradition for long life.

  • Hatsumode (First Shrine Visit): From January 1st to 3rd, millions of Japanese visit shrines to pray for health and happiness. Tourists are welcome to join—just follow the etiquette.

Transportation Tips for Winter Travel

Getting around Japan in December is convenient, but plan ahead.

  • JR Pass: If you plan to travel between Tokyo, Kyoto, and Osaka, the Japan Rail Pass is worth it. Reserve your seats early—December trains get crowded.

  • Flights: Domestic flights are popular for Hokkaido. Snow can cause delays, so allow flexibility in your schedule.

  • IC Cards: Get a Suica or PASMO card for easy access to trains, buses, and even vending machines.

Pro tip: Traveling around New Year’s (Dec 29 – Jan 3) can be tough. Trains and highways are extremely busy, so book tickets early.

Staying Connected – Internet & Communication

Traveling without mobile internet in Japan can be stressful. The easiest solution is using an eSIM.

  • Rakusim offers prepaid eSIMs for travelers. You can purchase and activate them online before arriving in Japan or immediately after landing.

  • No need to pick up or return a physical device. Just scan a QR code and you’re connected.

  • Reliable coverage across Japan, from major cities to local towns.

Also, consider downloading LINE, Japan’s most popular messaging app. Many locals use it instead of texting.

Recommended Destinations in December

Here are a few spots worth visiting:

  • Tokyo: Shinjuku and Roppongi for winter illuminations, Ginza for shopping.

  • Kyoto: Visit temples like Kiyomizu-dera in the quiet winter atmosphere.

  • Hokkaido: Skiing in Niseko, snow festivals starting late January.

  • Hot Springs (Onsen towns): Hakone, Kusatsu, and Beppu are great for relaxing in the cold weather.

Conclusion

Japan in December is a beautiful mix of winter scenery, modern holiday lights, and traditional New Year’s customs.

  • Expect chilly weather, so pack warm layers.

  • Learn a few simple etiquette rules to show respect.

  • Book your trains and hotels early, as year-end is a busy season.

  • Stay connected easily with Rakusim’s prepaid eSIM, so you’ll never get lost or miss an update.

With the right preparation, your holiday season in Japan will be an unforgettable experience—combining festive fun, cultural discovery, and warm Japanese hospitality.

Recommended eSIM Service

The eSIM from RakuSim, which uses networks from major Japanese carriers, provides reliable connectivity not only in urban areas but also in rural regions. It offers plans suitable for short-term stays as well.

Easy Purchase & Setup
Purchasing is simple and fully online. After purchase, follow the URL in the confirmation email to download your eSIM profile, or scan the QR code provided. You’ll be ready to use the service on the same day.

Flexible Plans
RakuSim offers a variety of plans to match different stay lengths, from short to long-term. Popular for its high data capacity and great value.

Reliable Support
Customer support is available every day, including weekends and holidays, from 10:00 AM to 7:00 PM. You can reach the team via email or phone for any inquiries.

Wide Coverage
Using the docomo network, RakuSim covers even rural and mountainous areas, providing stable connections even on the move.

Pricing Plans

    • 30GB / 8 Days: ¥2,900
      Ideal for short-term use! High-capacity plan with excellent value.
    • 50GB / 16 Days: ¥3,400
      Enjoy streaming and video calls with up to 50 hours over 16 days!
    • 50GB / 30 Days: ¥4,700
      Perfect for one-month stays! Enjoy 50GB for streaming, emails, and social media with peace of mind for an entire month!

▶Click here to purchase an eSIM：https://rakusim.net/

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