When the sun is shining, the music is playing and you’re living your best summer life, donating blood may not be on your bucket list. But, here is why it should be. Summer is one of the most critical times of the year for blood donation. With schools out and regular routines on hold, blood donations tend to drop, but the need stays strong. Hospital patients don’t get a summer break and local lives depend on a steady, reliable blood supply every day.