If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Siridao: The hottest months are usually April and May, with an average temperature of 28°C, while the coldest months are January and February, with an average of 26°C. The rainiest months in Siridao are July, June, August and September, with each month seeing an average of 806 mm of rainfall.