Ishigaki Island Weather in August
With daytime temperatures of 30°C (86°F) and nighttime lows of 28°C (82°F), August in Ishigaki Island brings very high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Ishigaki Island in August
Prepare for intense rain this month, as it marks the peak rainfall period. Having a poncho will keep you dry through the downpours. You can typically expect 23 days of rain this month, averaging around 242 mm (9.5 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 Ishigaki Island in August
In August, Ishigaki Island sees very high temperatures, with highs of 30°C (86°F). Nights drop to around 28°C (82°F). For most visitors, the main thing to prepare for is the heat during the day. Nights remain warm at around 28°C (82°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.
Sunshine in Ishigaki Island in August
With approximately 232 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If you prefer dry days with pleasant temperatures, August may not be the ideal month to visit Ishigaki Island. 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 Ishigaki Island's climate page.
Ishigaki Island Temperature in August
Min Temperature
28°C (82°F)
Max Temperature
30°C (86°F)
Chance of Rain
75%
Precipitation
242 mm (9.5 in)
Rainy days
23 days
Humidity
78%
Sunshine
232 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ishigaki Island typically stay consistent throughout August, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 27°C (81°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 Ishigaki Island in August
Browse day-by-day weather records for Ishigaki Island spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ishigaki Island historical weather extremes in August
Our historical data for Ishigaki Island spans 1976 to 2025, revealing these weather extremes.
- The warmest day in August was on August 21, 1981, with a maximum of 35°C (95°F).
- On August 24, 1977, Ishigaki Island saw its coldest August day with temperatures maxing out at 27°C (81°F).
- Ishigaki Island registered its coldest August night on August 18, 1982, with temperatures dropping to 21°C (70°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 →
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What to Wear in Ishigaki Island in August
Warm but pleasant conditions in Ishigaki Island in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Ishigaki Island 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 Ishigaki Island's climate page.
Temperature Rainfall Sunshine Humidity
See the full Ishigaki Island climate overview or explore weather in Japan.
