Weather is probably a major factor when you plan your trip to Hualien City, and keep 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 temp of 80°F, while the coldest months are January and February with an average of 64°F. The rainiest months in Hualien City are May, June, February, and January, with each month seeing an average of 31 inches of rainfall.