Tides Coos Bay, OR Estuary, Dec. 21Tides for the Coos Bay, OR Estuary, Thursday, Dec. 21, 2023 – Low tide: 1:50 a.m., 1.53 ft.; High tide: 8:35 a.m., 7.79 ft.; Low tide: 3:21 p.m., 1.14 ft.; High tide: 9:24 p.m., 5.5 ft.