Possibility of rain at Linkin Park concert in Feb

I'm planning to visit Jakarta for the Linkin Park concert scheduled for Feb 16 at the GBK Madya stadium. 
However, basic research on internet shows that it is peak rain season in Indonesia Feb.
I'm not sure if the frequency or the intensity of the rainfall. Or even about the venue facilities.
Can someone guide me on this and possible impact of the rains on the concert?
Also how will be the rain in Bali and other parts of Indonesia, if I decide to plan a week long tour?
For context, I'll be travelling from Mumbai, India and it rains heavily and kinda continuously here during peak rains, hence the worry.
 TIA