Best Time to Visit Osaka
Japan · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Recommended Months
Based on temperature comfort, low precipitation, and sunshine hours, the best time to visit Osaka is:
June → September → July
June scores 62/100 — the highest-rated month for travel.
Monthly Ratings (0-100)
Scores are weighted: temperature comfort (50%), low precipitation (30%), sunshine (20%). Higher is better.
| Month | Overall Score | Temp Comfort | Precipitation | Sunshine | Bar |
|---|---|---|---|---|---|
| January | 6 | 11 | 0 | 0 | |
| February | 8 | 15 | 0 | 0 | |
| March | 17 | 34 | 0 | 0 | |
| April | 28 | 56 | 0 | 0 | |
| May | 39 | 78 | 0 | 0 | |
| June | 50 | 100 | 0 | 0 | |
| July | 40 | 79 | 0 | 0 | |
| August | 35 | 70 | 0 | 0 | |
| September | 43 | 86 | 0 | 0 | |
| October | 39 | 78 | 0 | 0 | |
| November | 25 | 50 | 0 | 0 | |
| December | 10 | 20 | 0 | 0 |
Monthly Temperature Comfort
| Month | Mean Temp | Comfort Level |
|---|---|---|
| January | 5.2°C (41.4°F) | Cool (0-9°C) |
| February | 6.0°C (42.8°F) | Cool (0-9°C) |
| March | 9.8°C (49.6°F) | Cool (0-9°C) |
| April | 14.3°C (57.7°F) | Mild (10-17°C) |
| May | 18.5°C (65.3°F) | Warm (18-24°C) |
| June | 22.9°C (73.2°F) | Warm (18-24°C) |
| July | 27.2°C (81.0°F) | Hot (25-29°C) |
| August | 29.0°C (84.2°F) | Hot (25-29°C) |
| September | 25.9°C (78.6°F) | Hot (25-29°C) |
| October | 18.5°C (65.3°F) | Warm (18-24°C) |
| November | 13.1°C (55.6°F) | Mild (10-17°C) |
| December | 7.1°C (44.8°F) | Cool (0-9°C) |
Monthly Precipitation Rating
| Month | Rainfall (mm) | Rainy Days | Rating |
|---|---|---|---|
| January | 52.5 mm | 12.0 | Moderate |
| February | 72.0 mm | 11.8 | Wet |
| March | 126.6 mm | 15.2 | Very Wet |
| April | 165.6 mm | 13.2 | Very Wet |
| May | 218.2 mm | 15.4 | Very Wet |
| June | 247.8 mm | 17.8 | Very Wet |
| July | 274.2 mm | 22.2 | Very Wet |
| August | 187.8 mm | 19.8 | Very Wet |
| September | 190.0 mm | 19.2 | Very Wet |
| October | 162.7 mm | 12.8 | Very Wet |
| November | 97.8 mm | 10.2 | Wet |
| December | 38.7 mm | 7.8 | Moderate |
Monthly Sunshine Rating
| Month | Sunshine (hrs/day) | Rating |
|---|---|---|
| January | 7.4 hrs | Good |
| February | 7.6 hrs | Good |
| March | 8.2 hrs | Excellent |
| April | 8.6 hrs | Excellent |
| May | 9.0 hrs | Excellent |
| June | 8.5 hrs | Excellent |
| July | 9.4 hrs | Excellent |
| August | 10.4 hrs | Excellent |
| September | 9.2 hrs | Excellent |
| October | 8.3 hrs | Excellent |
| November | 8.0 hrs | Excellent |
| December | 8.2 hrs | Excellent |
Season-by-Season Breakdown
Spring (Mar-May)
Temperature: 14.2°C (57.6°F)
Rainfall: 170.1mm avg
Sunshine: 8.6 hrs/day
Humidity: 73.3%
Rainy Days: 14.6/mo
Mild transitional weather — comfortable for most activities.
Summer (Jun-Aug)
Temperature: 26.4°C (79.5°F)
Rainfall: 236.6mm avg
Sunshine: 9.4 hrs/day
Humidity: 77.5%
Rainy Days: 19.9/mo
This is the warm season. Ideal for outdoor activities but be prepared for heat.
Autumn (Sep-Nov)
Temperature: 19.2°C (66.6°F)
Rainfall: 150.2mm avg
Sunshine: 8.5 hrs/day
Humidity: 75.9%
Rainy Days: 14.1/mo
Mild transitional weather — comfortable for most activities.
Winter (Dec-Feb)
Temperature: 6.1°C (43.0°F)
Rainfall: 54.4mm avg
Sunshine: 7.7 hrs/day
Humidity: 73.0%
Rainy Days: 10.5/mo
This is the cool season. Pack warm layers and plan indoor activities.
Frequently Asked Questions
What is the best time to visit Osaka?
Based on our data-driven analysis, the best months to visit Osaka are June, September, July, when temperatures are comfortable, rainfall is lower, and sunshine is plentiful. June scores 62/100, the highest-rated month.
What is the hottest month in Osaka?
August is the hottest month with an average temperature of 29.0°C (84.2°F).
What is the coldest month in Osaka?
January is the coldest month with an average temperature of 5.2°C (41.4°F).
When is the rainy season in Osaka?
July is the wettest month with an average of 274.2mm of precipitation. Osaka experiences about 177.0 rainy days per year. The driest month is December with 38.7mm.
What should I pack for a trip to Osaka?
Packing recommendations depend on the season of your visit. Based on the climate data, pack lightweight, breathable clothing if visiting during the warm months (August is hottest at 29.0°C). For cooler months, bring layers and a warm jacket (January averages 5.2°C). A waterproof jacket or umbrella is recommended year-round as Osaka receives 1834.0mm of annual precipitation. Sun protection is important, especially during months with high UV index.
Osaka's climate is similar to Tokyo but with a more pronounced urban heat effect. I visited during the humid summer and found the city's famous street food culture actually thrives in the heat — the covered arcades of Dotonbori provide perfect shelter from the sun. The data shows Osaka gets slightly warmer than Tokyo in summer, making air conditioning essential. Spring and autumn are the ideal windows for exploring the city's many temples and castles.
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 34.69°, 135.5°. Timezone: Asia/Tokyo. Last updated: 2026-07-30.