If you are planning to visit Kota Kinabalu, then you definitely want to keep tab with the latest and updated Kota Kinabalu weather forecast. No one wants their vacation ruined by rainy days. By being preemptive, you can plan your outdoor activities on a sunny day, especially if you are doing an island-hop.
The weather forecast may not be 100% reliable all the time (hence the word forecast, duh!), just be prepared and you will be fine.