According to NASA, supermoons can appear 30 percent brighter and 14 percent larger than regular full moons.
The August 10th supermoon will be approximately 222,000 miles from Earth (a situation known as perigee) in comparison to the farthest distance of 252,657 miles (known as apogee).
After midnight is “good,” though after 2 a.m. is better, and “an hour or so” just before twilight is optimum. A Perseid meteor shower, which should include 50 shooting stars an hour, may be observed August 11th-13th.
Bob Berman, featured in The Old Farmer’s Almanac, writes:
The Moon floats between blue Spica and orange Mars on the 3rd. The next night, it sits between Mars and Saturn.
The 10th brings the closest Moon of the year, just 221,765 miles away. It is full in the same hour of its closest approach, creating a large rising Moon at sunset and great tides the next day. The Perseid meteor shower will be ruined by the light of this Moon on the 11th.
Venus spectacularly meets Jupiter low in the east just before dawn on the 18th. Mars, in Libra, passes dramatically below Saturn at nightfall from the 22nd to the 27th in the southwestern sky. Neptune, in Aquarius, reaches opposition on the 29th.
The Moon plops between orange Mars and pale Saturn on the 31st; both planets have precisely the same magnitude 0.6 brightness. (Almanac.com)
The Perseid “fireball” meteor(above) was observed in the skies over Chickamauga, Ga. on Aug. 11, 2013, at 2:14:49 a.m. EDT” (NASA.gov).