bootitemsTides
Block Island (Old Harbor) · September 2026
Block Island (Old Harbor), RI · NOAA 8459338 · Times EDT · Heights in feet above MLLW
H High tideL Low tideSpring tides
1 September, spring tides
L4:16a0.0
H11:01a3.5
L5:03p0.4
H11:25p2.9
2 September
L4:58a0.1
H11:51a3.5
L6:00p0.5
3 September
H12:19a2.8
L5:47a0.2
H12:47p3.4
L7:27p0.6
4 September
H1:19a2.6
L6:48a0.3
H1:50p3.3
L9:05p0.6
5 September
H2:25a2.6
L8:01a0.4
H3:01p3.2
L10:19p0.5
6 September
H3:38a2.7
L9:32a0.4
H4:18p3.3
L11:18p0.3
7 September
H4:50a2.9
L10:57a0.2
H5:26p3.4
8 September
L12:09a0.2
H5:51a3.1
L12:01p0.0
H6:21p3.6
9 September
L12:55a0.0
H6:44a3.4
L12:55p−0.1
H7:10p3.7
10 September, spring tides
L1:36a−0.1
H7:33a3.7
L1:45p−0.2
H7:55p3.7
11 September, spring tides
L2:13a−0.2
H8:19a3.8
L2:31p−0.2
H8:38p3.6
12 September, spring tides
L2:46a−0.2
H9:02a3.8
L3:12p−0.1
H9:19p3.4
13 September, spring tides
L3:14a−0.1
H9:44a3.7
L3:50p0.1
H9:59p3.2
14 September
L3:40a0.0
H10:24a3.5
L4:26p0.3
H10:39p2.9
15 September
L4:07a0.2
H11:05a3.3
L5:02p0.5
H11:21p2.7
16 September
L4:40a0.4
H11:48a3.0
L5:45p0.7
17 September
H12:06a2.4
L5:19a0.7
H12:35p2.8
L6:55p0.9
18 September
H12:56a2.3
L6:07a0.8
H1:30p2.6
L8:31p1.0
19 September
H1:53a2.1
L7:10a1.0
H2:36p2.5
L9:44p1.0
20 September
H3:01a2.1
L8:37a1.0
H3:57p2.6
L10:41p0.9
21 September
H4:19a2.2
L10:20a0.9
H5:00p2.7
L11:26p0.7
22 September
H5:15a2.4
L11:17a0.7
H5:44p2.9
23 September
L12:04a0.5
H5:57a2.7
L12:03p0.5
H6:20p3.0
24 September
L12:36a0.4
H6:33a3.0
L12:45p0.3
H6:54p3.2
25 September
L1:04a0.2
H7:09a3.3
L1:25p0.1
H7:30p3.3
26 September
L1:32a0.0
H7:46a3.5
L2:05p0.0
H8:08p3.3
27 September, spring tides
L2:01a−0.1
H8:25a3.7
L2:44p0.0
H8:48p3.3
28 September, spring tides
L2:34a−0.2
H9:07a3.8
L3:24p0.0
H9:31p3.2
29 September, spring tides
L3:10a−0.2
H9:51a3.8
L4:06p0.1
H10:18p3.1
30 September, spring tides
L3:51a−0.1
H10:39a3.7
L4:54p0.2
H11:09p2.9
Predictions from NOAA CO-OPS. Not for navigation.bootitems.com/tides/block-island-old-harbor-ri/