Iwami Ginzan Silver Mine 石見銀山
Japan UNESCO World Heritage Site

The Iwami Ginzan Silver Mine is a UNESCO World Heritage Site and an archaeological site in Ōda-shi, Japan. It is also a Historic Site of Japan and part of the Top 100 Geological Sites in Japan.
Planning a visit
Temperatures change throughout the year. The warmest months are July and August, with daily highs of 27 °C and 28 °C. July is the wettest month, with about 338 mm of rain and 17 rainy days. June and September also see significant rainfall, with 255 mm and 226 mm. For milder weather, April and October have daily highs between 16 °C and 20 °C. The coldest months are January and February, with daily highs of 6 °C and 7 °C.
The site is 661 km from Tokyo. The nearest airport is Izumo Enmusubi Airport, 53 km away, while Hiroshima Airport is 87 km away. Visitors can combine a trip to the mine with a visit to Izumo-taisha, which is 39.8 km away.
Weather by month
The warmest month is August, with an average high of 29 °C. The wettest is July, with about 338 mm of rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 6 | 7 | 10 | 16 | 20 | 23 | 27 | 29 | 25 | 20 | 14 | 9 |
| Average low, °C | 2 | 2 | 4 | 9 | 14 | 18 | 22 | 24 | 20 | 14 | 9 | 5 |
| Rainfall, mm | 123 | 108 | 150 | 142 | 174 | 255 | 338 | 153 | 226 | 132 | 135 | 122 |
| Rainy days | 15 | 12 | 12 | 11 | 11 | 14 | 17 | 13 | 15 | 11 | 10 | 15 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.