Steam rises from the rotenburo as snowflakes dissolve on the water's surface. Your dog is curled on a heated mat beside the stone bath, nose twitching at the sulfur-tinged air. A handful of ryokan across Japan now make this scene possible — winter onsen trips where your pet comes along.
Pet-Friendly Onsen Options
Private Onsen Ryokan The most common pet-friendly option. These ryokan have private outdoor baths (kashikiri onsen) that your pet can accompany you to. The pet doesn't bathe in the onsen water but can be nearby while you soak.
Pet Onsen A growing trend: facilities that offer actual pet baths using hot spring water. These are separate from human baths and use water tested for pet safety.
Notable locations: - Several ryokan in the Izu Peninsula (Shizuoka) - Pet-friendly pensions in Hakone (Kanagawa) - Dog resort hotels in Nasu (Tochigi)
Where to Find Them
Izu Peninsula: The highest concentration of pet-friendly onsen ryokan. The coastal setting adds to the atmosphere.
Hakone: Several options ranging from budget pensions to mid-range ryokan. Easy access from Tokyo.
Karuizawa: Some accommodations offer private onsen with pet access during winter.
Yufuin (Oita): A few luxury ryokan in this charming town welcome pets.
Booking Tips
- Book 2-3 months in advance for winter weekends
- Confirm pet size limits (most: under 10kg)
- Ask about pet-specific amenities (beds, bowls, towels)
- Verify which areas of the ryokan your pet can access
- Check for additional pet cleaning fees
Winter Safety
- Keep pets warm during outdoor transfers between buildings
- Watch for icy paths — dogs can slip too
- Don't let pets drink onsen water (mineral content can cause stomach issues)
- Shorter outdoor time in sub-zero temperatures
The Experience
Snow falling, steam rising, your pet curled up nearby — it is the Japanese concept of "iyashi" (healing) at its finest.
Could there be a better way to spend a winter weekend in Japan — or is this already the answer?