Monthly climate guide
Osaka weather in August
August in Osaka is typically hot, with average daytime highs around 30°C (87°F) and night-time lows near 23°C (73°F). The month usually brings about 190 mm of rain (very wet) and is often cloudy. Daytime highs are about the same as July and 4°C warmer than September.
What stands out in August
- In Osaka, August is late summer.
- Just 200 km apart, but Osaka runs about 2°C warmer than Hamamatsu this month.
- Plan Osaka Castle for the cooler hours — early morning is best.
- Humidity near 83% makes 30°C feel stickier than it sounds.
August is typically Osaka's warmest month.
Avg high
30°C
87°F
Avg low
23°C
73°F
Rainfall
190 mm
very wet
Humidity
83%
relative
Sky
62%
cloud · often cloudy
Osaka weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 7°C / 44°F | -1°C / 31°F | 59 mm | 83% | 66% |
| February | 8°C / 47°F | 0°C / 31°F | 75 mm | 81% | 67% |
| March | 12°C / 54°F | 2°C / 36°F | 108 mm | 79% | 61% |
| April | 18°C / 64°F | 7°C / 44°F | 147 mm | 78% | 61% |
| May | 23°C / 73°F | 12°C / 54°F | 142 mm | 78% | 63% |
| June | 25°C / 78°F | 17°C / 62°F | 237 mm | 83% | 79% |
| July | 29°C / 84°F | 22°C / 71°F | 243 mm | 85% | 74% |
| August | 30°C / 87°F | 23°C / 73°F | 190 mm | 83% | 62% |
| September | 27°C / 80°F | 19°C / 65°F | 265 mm | 84% | 69% |
| October | 21°C / 70°F | 12°C / 54°F | 208 mm | 84% | 61% |
| November | 16°C / 60°F | 7°C / 44°F | 84 mm | 83% | 58% |
| December | 9°C / 49°F | 1°C / 34°F | 72 mm | 83% | 65% |
What to pack for August
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is August a good time to visit Osaka?
Our Osaka guide recommends: March to May or October to November, avoiding the hot, humid summer.
Osaka is widely considered Japan's best city for street food — look for takoyaki and okonomiyaki at casual stalls in Dotonbori.
Best time to visit Osaka →Other Japan cities in August
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Osaka weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/japan/osaka/august
<a href="https://weathercompare.eu/weather/japan/osaka/august">Osaka weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/japan/osaka" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Osaka weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/japan/osaka/august">Osaka weather in August</a> – WeatherCompare</p>
Osaka in August: quick answers
Is August a good time to visit Osaka?
August is one of the wetter months in Osaka, with about 190 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Osaka in August?
Average highs are about 30°C (87°F) and average lows about 23°C (73°F), based on 10 years of daily data.
Does it rain a lot in Osaka in August?
Osaka typically gets around 190 mm of rain in August — very wet.
When is the best time to visit Osaka?
March to May or October to November, avoiding the hot, humid summer.
Figures are long-term averages for the area around Osaka (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.