Here's a list of important planetary movements and alignments for August:

1st Saturn is exactly quincunx to Uranus
2nd The Sun squares the Moon - i.e. the Moon reaches its First Quarter phase
6th The Moon reaches its maximum southern declination - i.e. its furthest point south of the equator
9th The Sun opposes the Moon - i.e. it's a Full Moon
10th The Moon is at its perigee - i.e. it is closest to the Earth
11th Mercury enters Leo
12th Venus enters Leo
16th The Sun squares the Moon - i.e. the Moon reaches its Last Quarter phase
18th The Moon reaches its maximum northern declination - i.e. its furthest point north of the equator
23rd The Sun enters Virgo
23rd The Sun conjoins the Moon - i.e. it's a New Moon
26th The Moon is at its apogee - i.e. it is furthest away from the Earth
27th Saturn is exactly septile to Uranus
27th Mercury enters Virgo
29th Jupiter is exactly trine Uranus
31st Saturn is exactly opposite Neptune
31st The Sun squares the Moon - i.e. the Moon reaches its First Quarter phase