If you're looking for summer vibes, the best time to travel to Mataram is in September, October and November, when the average temperature reaches 31.85 °C, while September, August and October are the 3 sunniest months of the year, with an average of 46.58 hours.
If you prefer colder temperatures, however, make sure you visit Mataram during the months of August, June and July to experience an average of 20.13 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during August, September and March, when the average precipitation in Mataram is 4.9 mm, while the months of January, February and March are drier, with an average of 0 mm.