Osaka August weather
Osaka, Japan · August
The hottest, most humid month of the year
August in Osaka is the peak of summer. Many days go well beyond 30°C, and nights often stay above 25°C, so it can feel like a continuous heat wave.
Both sun and humidity are strong, so you will start sweating quickly even with light activity. On the other hand, clear days make blue skies and neon signs look very vivid.
August averages at a glance
Average low
around 25°C
Average high
around 33°C
Average rainfall
around 109 mm
Rainy days
about 7 days
What to wear in August in Osaka
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Pack the lightest, most breathable clothes you own: linen or cotton short sleeves, tank tops, and loose shorts or wide pants.
- • Light-colored clothing that reflects rather than absorbs heat feels much more comfortable in direct sun.
- • Because indoor AC can be strong, bring a very thin shirt or cardigan to avoid feeling cold after sweating.
Travel tips for visiting Osaka in August
- • Limit outdoor time at midday and move heavy walking to early morning or after sunset.
- • Summer festivals and fireworks are common in August, so if your dates match, designing routes around night events can be very rewarding.
- • The most important rules are frequent hydration and rest. Think of your day as rotating between cafés, short street walks, convenience stores, and indoor malls.
August weather in Osaka — FAQ
Q. Is traveling to Osaka in August too exhausting?
A. It can be physically demanding if you are sensitive to heat, but if you break up your route and actively use cool indoor spaces, you can still enjoy the lively summer atmosphere.
Q. Are sandals okay for walking all day?
A. Supportive sandals with straps are fine for long walks, but very flat flip-flops can tire your feet quickly. A combination of cushioned sandals, spare socks, and one pair of sneakers gives you flexibility.
Q. Do I really need to pack an umbrella in August?
A. There are occasional showers, but not as many as in the rainy season. You can buy a cheap umbrella at any convenience store, so prioritize sun protection and cool clothing in your packing list.
Authored by Jiheon Bang
Updated: 2025-12-01
Reviewed using Visual Crossing Weather data and reorganized from a traveler’s perspective.
Weather data is designed to be refreshed roughly every 10 minutes.