If you're looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Santai County: The hottest months are usually August and July, with an average temperature of 26°C, while the coldest months are January and December, with an average of 10°C. The rainiest months in Santai County are July, August, June and September, with each month seeing an average of 199 mm of rainfall.