When you travel with your pet, keeping track of the weather can help you make the trip more safe and fun for everyone. The hottest months are usually May and June, 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 Pulau Perhentian Besar are December, November, January and October, with each month seeing an average of 479 mm of rainfall.