April 21 is generally a great time to visit Nagoya. While there is a slight chance of rain (23%), showers are usually brief. Expect comfortable 20°C weather. You'll find plenty of company in Nagoya this month as tourism activity remains quite robust.
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Essential Travel Info for Nagoya
Currency
JPY
¥ Japanese yen
Language
Japanese
Driving
Left side
Safety
Very High Safety
GPI: 1.336
Nagoya Weather Forecast for April 21
"Mild & Comfortable. Expect average highs of 20.2°C. 23% chance of rain."
What to Wear in Nagoya in April
Based on historical data for April 21, Nagoya typically experiences temperatures between 10°C and 20.2°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (23% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Nagoya
Smart Suitcase
- Light Jacket
- Long Pants
Average High
20.2°C
Daytime Peak
Average Low
10°C
Nighttime Low
Feels Like
20.2°C
☀️ Feels accurate
Rain Chance
23%
Avg 2.6mm if it rains
Cloud Cover
62%
Overcast
Pressure
1014.3 hPa
Medium volatility
Nagoya 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 30 recommended
05:00 - 10:00
16:00 - 18:00
Type I-II
🔴 19 min to burn
Type III-IV
🟡 29 min to burn
Type V-VI
🟢 48 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
14.8°C
Pleasant
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
Busy
73/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~112
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Nagoya
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:14
☀️ Noon
11:52
🌇 Sunset
18:30
⏱️ Daylight
13h 15m
Wind Speed
18.4 km/h
Gentle breeze
Sunshine
8.6 hrs
Direct Sun (Cloud-free)
Humidity
71%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Nagoya
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Nagoya
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
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
Active seismic zone. Multiple earthquakes per year.
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, Nagoya on April 21 averages 20.2°C with a 23% precipitation probability. Wedding/Outdoor Event Score: 96/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Nagoya Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (April 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Nagoya Worth Visiting on April 21?
Planning a trip to Nagoya on April 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 20.2°C with a 23% historical precipitation risk.
✈️ Travel Logistics: Approximately 112 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 16.2°C (polar plunge). Wave conditions are generally lake-like with heights around 0.38m.
📊 Historical Extremes: The hottest April 21 recorded in the last 30 years saw temperatures hit 27°C in 2023, while the coldest dropped to 8.9°C in 2020.