May 15 sees frequent showers in Nikko. Historical data shows a 49% chance of rain, so pack accordingly. Temperatures average 19°C. It's a lively time to explore Nikko, with most attractions operating at full capacity.
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Essential Travel Info for Nikko
Currency
JPY
¥ Japanese yen
Language
Japanese
Driving
Left side
Safety
Very High Safety
GPI: 1.336
Nikko Weather Forecast for May 15
"Mild & Comfortable. Expect average highs of 19.4°C. 49% chance of rain."
What to Wear in Nikko in May
Based on historical data for May 15, Nikko typically experiences temperatures between 10.4°C and 19.4°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 49% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Nikko
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
19.4°C
Daytime Peak
Average Low
10.4°C
Nighttime Low
Feels Like
19.4°C
🌤️ Feels accurate
Rain Chance
49%
Avg 4.9mm if it rains
Cloud Cover
71%
Light drizzle
Pressure
1013.3 hPa
Medium volatility
Nikko Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 98% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
04:00 - 09:30
16:00 - 18:00
Type I-II
🔴 17 min to burn
Type III-IV
🟡 26 min to burn
Type V-VI
🟢 43 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.7°C
Pleasant
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
Busy
65/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~636
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Nikko
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:35
☀️ Noon
11:38
🌇 Sunset
18:42
⏱️ Daylight
14h 6m
Wind Speed
10.4 km/h
Light breeze
Sunshine
8.1 hrs
Direct Sun (Cloud-free)
Humidity
79%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Nikko
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 Nikko
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
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 excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Very high seismic risk. Ring of Fire territory.
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, Nikko on May 15 averages 19.4°C with a 49% precipitation probability. Wedding/Outdoor Event Score: 83/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Nikko Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 20
21°C • 44% rain
Score
86
May 22
20.7°C • 45% rain
Score
86
May 13
19°C • 42% rain
Score
85
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 15) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Nikko Worth Visiting on May 15?
Planning a trip to Nikko on May 15? 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 19.4°C with a 49% historical precipitation risk.
✈️ Travel Logistics: Approximately 636 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 May 15 recorded in the last 30 years saw temperatures hit 24°C in 2018, while the coldest dropped to 9.3°C in 2024.