Because of the lati-thunderstorm-tude-typhoon, HKO states that no such partly sunny is valid next 7 days. We expect there is still very little chance that the sun will shine again in Hong Kong in mid-August, but HKO states that it is very very unlikely. See the information of 8/15: (27 - 32 degree C, RH: 75 - 90%)
We expect thunderstorms but not sunshine between 8/12 and 8/14 because of lati-thunderstorms. (Next low air trough property)
Will there be sunny period after 8/12? Yes, but no such High Air Ridge supports.
P.S. Good for the typhoon singal #3 because the typhoon towards HK as near as possible.
Stop the partly sunny next 7 days in gerenal case!