Planning for the weather is a good way to make your trip to Petarukan relaxing and enjoyable, especially when you're splurging. The hottest months are usually October and September, with an average temperature of 27°C, while the coldest months are July and August, with an average of 27°C. The rainiest months in Petarukan are January, February, December and March, with each month seeing an average of 477 mm of rainfall.