Weather will likely play an important role when you plan your trip to Lombok, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually October and April, with an average temperature of 27°C, while the coldest months are January and February, with an average of 27°C. The rainiest months in Lombok are April, March, December and January, with each month seeing an average of 303 mm of rainfall.