August 31 is generally a great time to visit Nagoya. While there is a slight chance of rain (37%), showers are usually brief. Expect comfortable 31°C weather. Nagoya is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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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 August 31
"Warm & Sunny. Expect average highs of 30.6°C. 37% chance of rain."
What to Wear in Nagoya in August
Based on historical data for August 31, Nagoya typically experiences temperatures between 23.1°C and 30.6°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 37% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Nagoya
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
30.6°C
Daytime Peak
Average Low
23.1°C
Nighttime Low
Feels Like
38.9°C
🔥 Heat index effect
Rain Chance
37%
Avg 4.1mm if it rains
Cloud Cover
66%
Overcast
Pressure
1010.5 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 83% 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
🔴 20 min to burn
Type III-IV
🟡 30 min to burn
Type V-VI
🟢 50 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
26.3°C
Humid/Sticky
Heat Index
38.9°C
Feels hotter
😕 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Marine Conditions
Jellyfish Warning
High water temps may attract jellyfish swarms.
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Japan
Flight Traffic
High
100/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~153
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Nagoya
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:25
☀️ Noon
11:54
🌇 Sunset
18:23
⏱️ Daylight
12h 58m
Wind Speed
12.5 km/h
Gentle breeze
Sunshine
9.3 hrs
Direct Sun (Cloud-free)
Humidity
78%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Nagoya
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Nagoya
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🔴 Very Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Mild discomfort possible for arthritic conditions.
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 August 31 averages 30.6°C with a 37% precipitation probability. Wedding/Outdoor Event Score: 84/100."
— 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
Better Alternatives Nearby
Consider these dates within ±7 days
August 27
30.9°C • 32% rain
Score
87
August 28
30.8°C • 32% rain
Score
87
August 25
31.1°C • 36% rain
Score
85
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 31) in other destinations
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📍 Is Nagoya Worth Visiting on August 31?
Planning a trip to Nagoya on August 31? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 30.6°C with a 37% historical precipitation risk.
✈️ Travel Logistics: Approximately 153 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 28.9°C (tropical bath). Wave conditions are generally lake-like with heights around 0.41m.
📊 Historical Extremes: The hottest August 31 recorded in the last 30 years saw temperatures hit 39.7°C in 2025, while the coldest dropped to 19.1°C in 2016.