How's the weather in HK on sept. 20,21,22. 2013?

I just checked the weather report:
On Sep. 20, it will be cloudy with the temperature ranging from 27C to 32. Just prepare summer clothes.
On Sep. 21, it will lightly rain and heavy rain may fall on Sep. 22.
Therefore, you'd better go to Ocean Park on Sep. 20 and Sep. 21 or 22 to Disney, because even if on rainy days, it is entertaining in Disney, but Ocean Park is not.