Weather is probably a major factor when you plan your trip to Dacai, but bear in mind that cheaper options are usually available when the weather isn’t as good. The hottest months are usually July and August, with an average temperature of 26°C, while the coldest months are January and February, with an average of 8°C. The rainiest months in Dacai are June, July, August and September, with each month seeing an average of 247 mm of rainfall.