Ishigaki Island Weather in September
With daytime temperatures of 29°C (84°F) and nighttime lows of 27°C (81°F), September in Ishigaki Island brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 238 mm (9.4 in) falls on average.
Rainfall in Ishigaki Island in September
You can typically expect 22 days of rain this month, averaging around 238 mm (9.4 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Ishigaki Island in September
If you're visiting Ishigaki Island in September, expect highs of 29°C (84°F) and overnight lows around 27°C (81°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 27°C (81°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.
Sunshine in Ishigaki Island in September
The month enjoys around 191 hours of sunshine, creating mostly sunny days with good weather conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, June, October, November and December typically offer the best weather for Ishigaki Island.
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 September
Min Temperature
27°C (81°F)
Max Temperature
29°C (84°F)
Chance of Rain
72%
Precipitation
238 mm (9.4 in)
Rainy days
22 days
Humidity
76%
Sunshine
191 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ishigaki Island typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
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 September
Historical weather for Ishigaki Island in September
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 September
The extremes listed below come from historical weather data collected in Ishigaki Island from 1976 through 2025.
- On September 12, 2025, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
- Ishigaki Island experienced its chilliest September day on September 28, 2020, reaching only 25°C (77°F).
- Nighttime temperatures dropped to 21°C (70°F) on September 27, 1997, marking the coldest September night on record.
Best Places in Japan in September
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in September →
perfect weather
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What to Wear in Ishigaki Island in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Ishigaki Island in September
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.
