Being just 8 degrees south of the equator, Bali has a fairly even climate year round.
Day time temperatures at low elevations vary between 20-33⁰ C although it can be much cooler than that in the mountains. The west monsoon is in place from approximately October to April and this can bring significant rain, particularly from December to March. Outside of the monsoon period, humidity is relatively low and any rain unlikely in lowland areas.