Sannai-Maruyama Site
Japan UNESCO World Heritage Site
The Sannai-Maruyama Site is an archaeological site in Aomori, Japan. It is a UNESCO World Heritage Site and is part of the Jōmon Prehistoric Sites in Northern Japan.
Planning a visit
The weather is warmest from July to September, with daily highs reaching 25 °C to 27 °C, though these months also see the most rain. April, May, and June offer milder temperatures between 12 °C and 22 °C. The coldest months are January and February, when daily highs are around 0 °C and lows reach -6 °C.
Aomori Airport is the nearest airport, located 9 km away. The site is 576 km from Tokyo. Visitors can combine a trip here with a visit to Hirosaki Castle, which is about 30 km away.
Weather by month
The warmest month is August, with an average high of 27 °C. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 0 | 0 | 4 | 12 | 18 | 22 | 25 | 27 | 22 | 16 | 9 | 2 |
| Average low, °C | -6 | -6 | -3 | 3 | 9 | 14 | 18 | 20 | 16 | 9 | 3 | -3 |
| Rainfall, mm | 170 | 130 | 102 | 96 | 124 | 121 | 175 | 189 | 188 | 146 | 175 | 179 |
| Rainy days | 24 | 19 | 15 | 12 | 12 | 13 | 15 | 17 | 13 | 15 | 18 | 25 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.
