Yakushima Weather in August
August in Yakushima brings high temperatures, with highs of 29°C (84°F) and nights dropping to 27°C (81°F). Rainfall is on the higher side this month, averaging around 164 mm (6.5 in), so keep a rain jacket handy.
Rainfall in Yakushima in August
Climate statistics over the past 30 years suggest around 21 days of rain, with 164 mm (6.5 in) average for the month. 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 Yakushima in August
In August, expect high temperatures in Yakushima, with highs of 29°C (84°F) and lows of 27°C (81°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 27°C (81°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help. This month tends to be the warmest of the year. Light, comfortable clothing will serve you well.
Sunshine in Yakushima in August
The month enjoys around 230 hours of sunshine, creating mostly sunny days with good weather conditions.If your ideal day consists of dry skies and pleasant temperatures, August, October and November typically offer the best circumstances for Yakushima.
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 Yakushima's climate page.
Yakushima Temperature in August
Min Temperature
27°C (81°F)
Max Temperature
29°C (84°F)
Chance of Rain
71%
Precipitation
164 mm (6.5 in)
Rainy days
21 days
Humidity
81% *
Sunshine
230 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Yakushima typically stay consistent throughout August, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 25°C (77°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 Yakushima in August
Browse day-by-day weather records for Yakushima spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Yakushima historical weather extremes in August
The extremes listed below come from historical weather data collected in Yakushima from 1976 through 2025.
- The warmest day in August was on August 27, 1987, with a maximum of 36°C (97°F).
- The lowest daytime temperature in August was 25°C (77°F), recorded on August 16, 1998.
- Yakushima registered its coldest August night on August 22, 2002, 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 →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Yakushima in August
Warm temperatures in August 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! Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Yakushima 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 Yakushima's climate page.
Temperature Rainfall Sunshine Humidity
See the full Yakushima climate overview or explore weather in Japan.
