Kayaking in open water can be a lot of fun but you do need to be aware of weather conditions before going out. Not only do you need to know information such as wind speed and direction, wave heights and tidal currents, before you go out on the water, but you should also pay attention to changes in cloud patterns that might affect you while you're on the water.
Knowing what the weather is doing and being prepared for it is the best way to have a safe, enjoyable trip.