Okayama Weather in August
August in Okayama brings very high temperatures around 33°C (91°F) during the day, dropping to 25°C (77°F) at night, with quite a bit of rainfall expected, averaging around 111 mm (4.4 in) for the month.
Rainfall in Okayama in August
Typically around 13 days of rainfall are expected, averaging 111 mm (4.4 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Okayama in August
Daytime highs in Okayama in August reach 33°C (91°F), with nights around 25°C (77°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning. Although these are the average temperatures, expect warmer days occasionally. Wear cool clothing and stay hydrated to manage the heat.
Sunshine in Okayama in August
Expect sunny days throughout the month, with an estimated 205 hours of sunshine. This makes it a pleasant time to visit Okayama.If you prefer dry days with pleasant temperatures, August may not be the ideal month to visit Okayama. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 Okayama's climate page.
Okayama Temperature in August
Min Temperature
25°C (77°F)
Max Temperature
33°C (91°F)
Chance of Rain
45%
Precipitation
111 mm (4.4 in)
Rainy days
13 days
Humidity
69%
Sunshine
205 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Okayama typically stay consistent throughout August, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 24°C (75°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 Okayama in August
Browse day-by-day weather records for Okayama spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Okayama historical weather extremes in August
Based on 49 years of weather observations in Okayama between 1976 and 2025, these are the recorded extremes.
- The warmest day in August was on August 5, 2025, with a maximum of 39°C (102°F).
- The lowest daytime temperature in August was 24°C (75°F), recorded on August 14, 2003.
- Nighttime temperatures dropped to 17°C (63°F) on August 6, 1981, marking the coldest August night on record.
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 →
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What to Wear in Okayama in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). 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 Okayama 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 Okayama's climate page.
Temperature Rainfall Sunshine Humidity
See the full Okayama climate overview or explore weather in Japan.
