If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Lombok: The hottest months are usually October and November, with an average temperature of 26°C, while the coldest months are July and August, with an average of 25°C. The rainiest months in Lombok are January, February, December and March, with each month seeing an average of 180 inches of rainfall.