August · Japan
Best time to visit Osaka in August Weather, crowds & prices
Weather in Osaka in August
Average temperature 27°C, 322 mm of rain, about 22 days with 6+ hours of sunshine and 84% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
3.8/10
Ranked #12 of 12 months
- Avg temp
- 27°C
- Rainfall
- 322 mm
- Humidity
- 84%
- Days with 6h+ sun
- 22
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
August in Osaka scores 3.8/10 for sightseeing and cultural travel - ranked #12 of 12. Expect around 27°C, 322 mm of rain, and roughly 22 days with 6+ hours of sunshine this month.
Street-food neon, castle grounds, and canal nights peak from May through September.
August in Osaka: expect compromises
Days in August average 27°C (81°F) and humidity near 84% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
This is the year's wettest stretch at 322 mm, but with about 22 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 3.8/10 on the same scale — 12th of 12 months, versus 6.2/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, December is materially better in Osaka — 2.4 points higher on the same scale.
Frequently asked
- What is the weather like in Osaka in August?
- In August, Osaka averages 27°C, 322 mm of rain, and about 22 days with 6+ hours of sunshine. Its climate-comfort score is 3.8/10.
- Is August a good time to visit Osaka?
- August earns a 3.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Osaka in August?
- Expect about 322 mm of rain in August. Average humidity is 84% and there are about 22 days with 6+ hours of sunshine.
Curated in Osaka
Tickets & experiences
Things to do in Osaka
Osaka, Japan. Live activities and tours from GetYourGuide, matched to this destination.