Hiking to waterfalls & enjoying the warm temperatures, by jumping in the cool waters & refreshing yourself is one way to wake your soul up.
Jet ski on a lake in the mountains,
rent a house boat
on the California Delta or at the Colorado River, horseback
ride in the Sierras, enjoy a day hike to a local mountain peak.
Camping anywhere but the
deserts or central valley (baking zones) should be very pleasant. Get out, enjoy nature & do
something with your summer... before it's too late.
Beat the heat & head for the hills. There is plenty of fresh air and forests to enjoy at higher elevations. Learn to camp outside of developed campgrounds and save on fees. Seasonal streams will not be flowing long this year due to the sever drought. NorCal - Trinity & Klamath Rivers will be your best bet if you want any kind of serious water recreation.