Summer: a time filled with little responsibility, obligation, and schedules. These warmer months are about going to the pool, the beach, the lake, or all of the above. For some, it is a three month vacation. For you, it should be anything but time off.
While summer is a time of fun and relaxation, most young people are bored and tired of listening to 'Summertime Sadness' by the end of June. Give them something to stay occupied.
At some point during the summer, an incoming freshman, along with a wide-eyed parent or laid-back one (depending on what number child it is) will spend a couple days on campus, signing up for classes, taking tours and free swag. Then, student and parent are left to their own devices for the remaining month or so of summer.
Take advantage of that dead space in summer. There is never a better time to establish a strong relationship with these young students, and future alumni of your university. It's also a good time to make sure you're prepared to address the needs of these incoming students on their terrain.
Make sure your university's website is mobile friendly. Gone are the days when students picked out their desktop computers like picking out a car at 16. While they may have a laptop for writing papers and more thorough Facebook stalking, they'll use their phone for about 70% of their online needs. Students may still be learning there way around campus, but your university's website should be easy to navigate.
Along with that mobile trend come apps. While Facebook seems to be on the decline, you'd be hard-pressed to find a student who doesn't still have it downloaded on his or her phone. Use this direct link to students' lives to get them excited about the next four years and the upcoming fall semester. They'll fly by for the students, and the faculty as well. Don't look up when a class graduates and realize you didn't do as much as you could have to establish a strong bond with them.