Yes, local in season fruit is always tastier. I suspect because out of season fruit has to come from further away, meaning it has to be picked before it normally would be if it didn’t have to travel so far.
I too have had this experience. Now I always sample one from a pack before I buy. I used to feel guilty doing that, but the quality varies so much and I got sick of wasting fruit purchases when they turn out to be sour or gross. Same with grapes and blueberries from Costco.