Taking into account the local weather in Hualien City is an important factor for planning your visit, especially if you plan to spend your trip poolside. 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.