If you're looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Borongan City: The hottest months are usually August and June, with an average temperature of 28°C, while the coldest months are February and January, with an average of 26°C. The rainiest months in Borongan City are January, December, November and July, with each month seeing an average of 367 mm of rainfall.