Planning for the weather is a good way to make your trip to Pasuruan relaxing and enjoyable, especially when you're splurging. The hottest months are usually October and September, with an average temperature of 28°C, while the coldest months are July and August, with an average of 27°C. The rainiest months in Pasuruan are January, February, March and December, with each month seeing an average of 383 mm of rainfall.