April 15 is generally a great time to visit Osaka. While there is a slight chance of rain (34%), showers are usually brief. Expect comfortable 19°C weather. As it's peak season for Osaka, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Osaka
Currency
JPY
¥ Japanese yen
Language
Japanese
Driving
Left side
Safety
Very High Safety
GPI: 1.336
Osaka Weather Forecast for April 15
"Mild & Comfortable. Expect average highs of 18.7°C. 34% chance of rain."
What to Wear in Osaka in April
Based on historical data for April 15, Osaka typically experiences temperatures between 9.3°C and 18.7°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 34% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Osaka
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
18.7°C
Daytime Peak
Average Low
9.3°C
Nighttime Low
Feels Like
18.7°C
🌤️ Feels accurate
Rain Chance
34%
Avg 2.7mm if it rains
Cloud Cover
63%
Overcast
Pressure
1014.1 hPa
Medium volatility
Osaka Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 95% 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
13.5°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
High
85/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~238
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Osaka
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:28
☀️ Noon
11:59
🌇 Sunset
18:30
⏱️ Daylight
13h 1m
Wind Speed
16.3 km/h
Gentle breeze
Sunshine
8.8 hrs
Direct Sun (Cloud-free)
Humidity
72%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Osaka
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 Osaka
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
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, Osaka on April 15 averages 18.7°C with a 34% precipitation probability. Wedding/Outdoor Event Score: 88/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Osaka Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
April 19
19.7°C • 27% rain
Score
95
April 20
19.8°C • 24% rain
Score
95
April 17
19.3°C • 26% rain
Score
94
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (April 15) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Osaka Worth Visiting on April 15?
Planning a trip to Osaka on April 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 18.7°C with a 34% historical precipitation risk.
✈️ Travel Logistics: Approximately 238 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 15.2°C (polar plunge). Wave conditions are generally lake-like with heights around 0.39m.
📊 Historical Extremes: The hottest April 15 recorded in the last 30 years saw temperatures hit 21.3°C in 2024, while the coldest dropped to 4.6°C in 2021.