Since having a SUP and since improving my skills and balance, I'm finding that there is rarely - if ever - a day when you could not go out for a paddle.
I used to look at the wind and wave graphs and write days off because my skill or comfort level were lacking. Now, I am extending my range and getting out in conditions that would have in the past had me staying off the water.
Went out this morning in wet, grey, gusting southerly conditions, and had a blast. My balance is improving, as is my fitness and my fun levels.
Moral of this story: grab your board, get outside your comfort zone, extend your limits and extend your fun. There's always something new to learn.