Yes, Sunway Lagoon Theme Park is close to Kuala Lumpur and is a great place to spend time with the family when the weather is right. Amusement parks and waterparks are often most enjoyable when the weather is 70 degrees Fahrenheit (21°C) or more and the chance of rain is moderate at most. With that in mind, consider planning your flight to Kuala Lumpur for June or July if these attractions interest you or your family.