From dreammoods.com/dreamdictionary:
To see clear, calm
waves in your dream, signify renewal and clarity. You are reflecting on some
important life decision that needs to be made. Alternatively, if you are riding
a wave, then it indicates that you are trying to get a handle on your emotions.
Waves also symbolize potential and power.
To hear waves
crashing in your dream indicates tenderness and relaxation. It also brings about
feelings of sensuality, sexuality and tranquility.
To dream that you
are caught in a tidal wave represents an overwhelming emotional issue that
demands your attention. You may have been keeping your feelings and negative
emotions bottled up inside for too long. You may be holding back tears that you
are afraid to express in your waking life. On a positive note, the tidal wave
symbolizes the clearing away of old habits. If you are carried away by the tidal
wave, then it means that you are ready to make a brand new start in a new place.
To see muddy,
violent waves in your dream indicate a fatal error in an important
decision.
Dreaming
that a wave hits your boat and knocks you into the water means that you are
letting your emotions guide your decisions. Perhaps you are acting too
irrationally.