Rains fall alot more in high plains as you go upper north. in denpasar and everyhting else on the same level like Kuta Sanur ND etc.
In Bali Weather in this month you will get plenty of time for a suntan and enjoy relaxing at the beach and pool etc. you may get a number of days with no rain what so ever. a lot of the time there is a downpour and then it clears. often you get most rain at night. bali is a fantastic place for a holiday any time of the year.