Take the kids to Kuah Jetty for some fresh air and sunshine. They'll have fun trying to find fish splashing in the waters below or boats cruising in the distance.
You'll have no end of sightseeing choices when visiting Kuah. Kuah Jetty is a great place to start here, but there are loads of other worthy spots to consider. Night Market, Eagle Square, and Langkawi Wildlife Park are close to the waterside attraction and will fill in your day nicely.