Summer. Always summer.
I love the sunny days, the longer days, the higher temperatures. (OK, I can do without the 100+ degrees and the high humidity, I suppose, but I love the warmth).
We spend the entire summer outdoors; there's always work somewhere in the yard. (I say "work" but when you really love doing it, it's not really work.) We love to plan flower beds and get them going. And now we've got a nice veggie garden....after I mowed yard last night, I went up to the garden and brought back tomatoes, green peppers, and banana peppers. And one nice zucchini. We really enjoy working outside.
I love to grill and the summer gives me plenty of time to try new grilling recipes. We pretty much grill every night during the summer, except when it's really raining.
We have an inground pool and there's nothing more relaxing after a night of yard work than stripping down and taking a dip. I used to spend hours in the pool, until really late at night. It's just beautiful.
I love the summer months.