Ocean swell is originated by storms far out from land. Generally the isolated larger storms create the best surfing waves. These waves use constructive interference to build themselves into parallel wave-fronts. The Pacific shores of North America are far better for surfers because waves from the many storms in various parts of the great expanse of the Pacific Ocean are reinforced by prevailing westerly winds as they roll eastward. Surf along the Atlantic shore is smaller because the westerly winds blow against the advancing waves and decrease their effect.
Wind waves are a more localized phenomenon.
The constant battles between constructive and destructive interference make these waves highly unpredictable. With local wind waves chopping up the seas, a clean ocean swell can often be destroyed. The buoy report on your weather radio, will inform you on local ocean conditions. A swell size of five feet with a twenty seconds interval, along with a ten knot off-shore wind, would be ideal for experienced ocean paddlers. Those just learning would have more fun with a three foot swell every fifteen seconds.