I took this from my home office a few minutes ago:
Doesn't look like much but those are two foot rollers, with mixed length between the rollers, and a steady 10 knot breeze, gusts to 15.
Add another 15 knots of winds and, in an open kayak, enjoy!
We get really tired canoeists and kayakers four or five times a year that put in on my beach, exhausted, especially this time of year.