Planning for the weather is a good way to make your trip to Sanquansi relaxing and enjoyable, especially when you're splurging. The hottest months are usually July and June, with an average temperature of 12°C, while the coldest months are January and December, with an average of -10°C. The rainiest months in Sanquansi are July, August, June and September, with each month seeing an average of 192 mm of rainfall.