What August feels like in Osaka
Summer peaks in August: no month in Osaka is warmer. Afternoons are hot, so sightseeing works best in the morning or evening. Even after dark it stays hot and sultry. The air is muggy, so it feels hotter than the thermometer suggests.
Rain in Osaka in August
Showers are a regular feature, arriving about one day in 3. Rain tends to come in heavy bursts: about 11.3 mm (0.4 in) on an average rainy day. That is close to Osaka's typical rain per wet day for the whole year (about 12.7 mm).
Daylight and sunshine in August
On 15 August the sun rises at about 5:18 am and sets around 6:48 pm local time, giving 13 h 30 min of daylight. Days are getting shorter: 47 min less daylight than in mid-July. Measured sunshine covers about 79% of the daylight — there are plenty of bright spells.
How August compares to the rest of the year
Ranked by average high, August comes out as the warmest month in Osaka. Compared with July, afternoons are 2°C (3.6°F) warmer, with 85 mm less rain. From here temperatures start to ease, beginning in September. The next month's average high: 28.6°C (83.5°F).
Who August suits
- Sightseeing: less ideal — midday heat makes long walks hard.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: a good fit — hot coastal weather.
- Museums & indoor: a good choice — a cool break during the hottest hours.
Tips for visiting Osaka in August
Rain Protection
Keep a small umbrella in your bag and wear shoes that cope with puddles.
Sun Protection
Loose, breathable clothing plus sunscreen and a wide-brimmed hat.
Quick questions
How warm is Osaka in August?
It feels hot: typical highs are 32.3°C (90.1°F), with lows near 25.1°C (77.2°F).
Does it rain a lot in Osaka in August?
Yes, fairly — rain falls about one day in 3 and totals about 135 mm, so an umbrella is worth carrying.
What should I wear in Osaka in August?
Pack rain protection and sun protection. Evenings feel similar to the day, so the same clothes work from morning to night.
Is August or September better for visiting Osaka?
September, clearly: it ranks #6 of 12 among Osaka's months, against #11 for the other. September is cooler and has more rainy days.