Upvote:5
BALI
In November, Bali is just barely starting to enter the rainy season. You can check it in Bali MSN Weather
I was in Bali for one week in November 2010, and within 1 week, rain only happened 1 time during the daytime.
However if you are really worried about rain, you should go around April - August, when Bali is in the peak of the dry season.
COLOMBO
You can check Colombo's November weather in Colombo's MSN Weather.