1977 Seattle Mariners season Game log August

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| August 12 | @ Boston Red Sox | 2-7 | Mitchell (0-4) | 27005 | 48-69 |
| August 13 | @ Boston Red Sox | 6-13 | Galasso (0-2) | 34095 | 48-70 |
| August 14 | @ Boston Red Sox | 1-11 | Wheelock (6-9) | 31223 | 48-71 |
| August 15 | @ Detroit Tigers | 1-13 | Pole (7-9) | 14414 | 48-72 |
| August 16 | @ Detroit Tigers | 3-2 | Morris (1-1) | 9065 | 49-72 |
| August 17 | @ Minnesota Twins | 3-2 | Zahn (11-10) | 11739 | 50-72 |
| August 18 | @ Minnesota Twins | 2-8 | Galasso (0-3) | 13884 | 50-73 |
| August 19 | Detroit Tigers | 4-6 | Pole (7-10) | 19698 | 50-74 |
| August 20 | Detroit Tigers | 3-7 | Abbott (10-8) | 55670 | 50-75 |
| August 21 | Detroit Tigers | 4-5 | Mitchell (1-5) | 15373 | 50-76 |
| August 22 | Cleveland Indians | 1-12 | Galasso (0-4) | DH | 50-77 |