Sure, here are my five sentences to describe my favorite season:

My favorite season is autumn. The temperature is just right, not too hot or too cold, which makes it perfect for outdoor activities. The leaves on the trees turn into a rainbow of colors, creating a breathtaking view that I enjoy every day. The harvest season brings lots of delicious foods to the table, such as apples, pumpkins and nuts. Best of all, during this season I get to wear cozy sweaters and jackets, which keep me warm and comfortable. All in all, autumn is a season of beauty, bounty and comfort, and it always fills me with happiness and joy.