December 12 is generally a great time to visit Hakone. While there is a slight chance of rain (21%), showers are usually brief. Expect comfortable 12°C weather. Hakone is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Hakone
Currency
JPY
¥ Japanese yen
Language
Japanese
Driving
Left side
Safety
Very High Safety
GPI: 1.336
Hakone Weather Forecast for December 12
"Mild & Comfortable. Expect average highs of 11.8°C. 21% chance of rain."
What to Wear in Hakone in December
Based on historical data for December 12, Hakone typically experiences temperatures between 5.6°C and 11.8°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (21% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Hakone
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
11.8°C
Daytime Peak
Average Low
5.6°C
Nighttime Low
Feels Like
11.2°C
🌤️ Feels accurate
Rain Chance
21%
Avg 1.4mm if it rains
Cloud Cover
48%
Overcast
Pressure
1017.3 hPa
Medium volatility
Hakone Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 90% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
7.1°C
Dry air
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Japan
Flight Traffic
High
90/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~624
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Hakone
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:43
☀️ Noon
11:38
🌇 Sunset
16:33
⏱️ Daylight
9h 49m
Wind Speed
9.7 km/h
Light breeze
Sunshine
7.3 hrs
Direct Sun (Cloud-free)
Humidity
73%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Hakone
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Hakone
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Active seismic zone. Multiple earthquakes per year.
Volcanic Activity
Nearest: Mount Fuji
37.3km away
Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Hakone on December 12 averages 11.8°C with a 21% precipitation probability. Wedding/Outdoor Event Score: 79/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Hakone Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
December 5
12.9°C • 22% rain
Score
85
December 6
12.7°C • 21% rain
Score
84
December 7
12.5°C • 20% rain
Score
83
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (December 12) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Hakone Worth Visiting on December 12?
Planning a trip to Hakone on December 12? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 11.8°C with a 21% historical precipitation risk.
✈️ Travel Logistics: Approximately 624 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 8 vaccinations are recommended for Japan, including COVID-19.
📊 Historical Extremes: The hottest December 12 recorded in the last 30 years saw temperatures hit 16.3°C in 2021, while the coldest dropped to 3°C in 2017.