December 1 is generally a great time to visit Hiroshima. While there is a slight chance of rain (17%), showers are usually brief. Expect comfortable 13°C weather. Expect a bustling atmosphere in Hiroshima right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for Hiroshima
Currency
JPY
¥ Japanese yen
Language
Japanese
Driving
Left side
Connect
Public wireless LAN is available at publ...
Safety
Very High Safety
GPI: 1.336
Hiroshima Weather Forecast for December 1
"Mild & Comfortable. Expect average highs of 13.1°C. 17% chance of rain."
What to Wear in Hiroshima in December
Based on historical data for December 1, Hiroshima typically experiences temperatures between 5.1°C and 13.1°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (17% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Hiroshima
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
13.1°C
Daytime Peak
Average Low
5.1°C
Nighttime Low
Feels Like
12.6°C
🌤️ Feels accurate
Rain Chance
17%
Avg 1.3mm if it rains
Cloud Cover
52%
Overcast
Pressure
1020.7 hPa
Medium volatility
Hiroshima Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 94% 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
8.6°C
Dry air
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Japan
Flight Traffic
High
93/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~27
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Hiroshima
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:59
☀️ Noon
12:00
🌇 Sunset
17:01
⏱️ Daylight
10h 2m
Wind Speed
13 km/h
Gentle breeze
Sunshine
7.4 hrs
Direct Sun (Cloud-free)
Humidity
74%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Hiroshima
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Hiroshima
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.
High pressure may reduce activity.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Moderate seismic activity. Occasional tremors possible.
Typhoon Risk
Year-round risk present
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, Hiroshima on December 1 averages 13.1°C with a 17% precipitation probability. Wedding/Outdoor Event Score: 85/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Hiroshima Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
November 24
14.8°C • 14% rain
Score
99
November 25
14.8°C • 14% rain
Score
99
November 26
14.5°C • 13% rain
Score
98
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (December 1) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Hiroshima Worth Visiting on December 1?
Planning a trip to Hiroshima on December 1? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 13.1°C with a 17% historical precipitation risk.
✈️ Travel Logistics: Approximately 27 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 8 vaccinations are recommended for Japan, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 17.6°C (refreshing tonic). Wave conditions are generally lake-like with heights around 0.22m.
📊 Historical Extremes: The hottest December 1 recorded in the last 30 years saw temperatures hit 18.8°C in 2025, while the coldest dropped to 2.4°C in 2020.