Continual is a frequently repeated occurrence: “The continual banging of the doors was very distracting.”
Continuous is an action or circumstance that continues for a period of time without being stopped or interrupted: “When she retired, she had a record of 45 years of continuous service in the office.”
The continual tapping of the rain on the roof reminded me of the continuous noise of tropical birds hopping on the tin roof of my lodge in the jungle.
