Lake Tōya

Lake Tōya is a volcanic crater lake in Japan. It is one of the 115 sights featured on this site and is ranked 87th among the most looked-up sights in the country on English Wikipedia.
Planning a visit
The best time to visit is during the summer months of July and August, when daily highs reach about 22 °C to 24 °C. However, these months also see the highest rainfall, with August having about 263 mm of rain. For colder weather, January and February have daily highs below 0 °C and lows reaching -10 °C.
New Chitose Airport in Sapporo is the nearest airport, located 72 km away. The lake is approximately 773 km from Tokyo. The lake covers an area of 71 square kilometers and has a length of 9,000 meters.
Weather by month
The warmest month is August, with an average high of 24 °C. The wettest is August, with about 263 mm of rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | -3 | -2 | 2 | 8 | 14 | 19 | 22 | 24 | 20 | 14 | 6 | 0 |
| Average low, °C | -10 | -9 | -5 | 1 | 6 | 12 | 16 | 18 | 14 | 7 | 0 | -7 |
| Rainfall, mm | 131 | 100 | 95 | 113 | 135 | 133 | 215 | 263 | 229 | 151 | 152 | 136 |
| Rainy days | 23 | 19 | 13 | 10 | 11 | 12 | 12 | 16 | 14 | 16 | 19 | 24 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.