Osaka Weather in August
Thinking of visiting Osaka in August? Expect very high temperatures reaching 34°C (93°F) during the day, dropping to 25°C (77°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Osaka in August
On average, there are about 16 days with rain during this month, averaging 117 mm (4.6 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Osaka in August
Osaka in August gets highs of 34°C (93°F) during the day and drops to 25°C (77°F) at night. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights stay warm at around 25°C (77°F), so light bedding and good ventilation are worth thinking about. Note that these temperatures are average, but some days may be hotter. Dress in cool, breathable fabrics to stay comfortable in the heat.
Sunshine in Osaka in August
Expect sunny days throughout the month, with an estimated 223 hours of sunshine. This makes it a pleasant time to visit Osaka.August in Osaka has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Osaka's climate page.
Osaka Temperature in August
Min Temperature
25°C (77°F)
Max Temperature
34°C (93°F)
Chance of Rain
52%
Precipitation
117 mm (4.6 in)
Rainy days
16 days
Humidity
66%
Sunshine
223 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Osaka typically stay consistent throughout August, with daily highs averaging around 34°C (93°F). Nights are warm, with lows typically ranging from 24°C (75°F) to 26°C (79°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Osaka in August
Browse day-by-day weather records for Osaka spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Osaka historical weather extremes in August
Based on 49 years of weather observations in Osaka between 1976 and 2025, these are the recorded extremes.
- Osaka recorded its highest August temperature of 39°C (102°F) on August 8, 1994.
- The coldest August day was on August 27, 1996, with a maximum of 23°C (73°F).
- The coldest night in August in Osaka was on August 6, 1981, with a minimum of 18°C (64°F).
Best Places in Japan in August
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in August →
perfect weather
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What to Wear in Osaka in August
Get ready for hot weather in August! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Osaka in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Osaka's climate page.
Temperature Rainfall Sunshine Humidity
See the full Osaka climate overview or explore weather in Japan.
