March 20 is generally a great time to visit Hiroshima. While there is a slight chance of rain (30%), showers are usually brief. Expect comfortable 14°C weather. As it's peak season for Hiroshima, we recommend booking your stay well in advance to secure the best rates. Note: March 20 is Vernal Equinox Day in Hiroshima, so expect special events, closures, and festive atmosphere.
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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 March 20
"Mild & Comfortable. Expect average highs of 14°C. 30% chance of rain."
What to Wear in Hiroshima in March
Based on historical data for March 20, Hiroshima typically experiences temperatures between 4.8°C and 14°C. We recommend packing heavy coat, scarf, gloves along with other layers to stay comfortable. With a 30% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Hiroshima
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
- Umbrella
Average High
14°C
Daytime Peak
Average Low
4.8°C
Nighttime Low
Feels Like
13.7°C
🌤️ Feels accurate
Rain Chance
30%
Avg 2.8mm if it rains
Cloud Cover
61%
Overcast
Pressure
1016.4 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 99% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 29 min to burn
Type III-IV
🟡 44 min to burn
Type V-VI
🟢 73 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
9.2°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
Holiday
Vernal Equinox Day
Flight Traffic
High
100/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~29
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Hiroshima
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:16
☀️ Noon
12:19
🌇 Sunset
18:22
⏱️ Daylight
12h 6m
Wind Speed
15 km/h
Gentle breeze
Sunshine
7.9 hrs
Direct Sun (Cloud-free)
Humidity
73%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Hiroshima
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Hiroshima
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟢 Moderate
Price Level
💰💰 Moderate
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
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 March 20 averages 14°C with a 30% precipitation probability. Wedding/Outdoor Event Score: 83/100."
— 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
March 24
14.6°C • 25% rain
Score
88
March 25
14.7°C • 28% rain
Score
88
March 23
14.3°C • 25% rain
Score
87
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (March 20) in other destinations
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📍 Is Hiroshima Worth Visiting on March 20?
Planning a trip to Hiroshima on March 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 14°C with a 30% historical precipitation risk.
🎉 Local Event: The date coincides with Vernal Equinox Day, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 29 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 10.9°C (polar plunge). Wave conditions are generally lake-like with heights around 0.26m.
📊 Historical Extremes: The hottest March 20 recorded in the last 30 years saw temperatures hit 15.3°C in 2023, while the coldest dropped to -0.7°C in 2025.