Rhode Island

Block Island (old Harbor) — Weekly Tide Table

May 17 – May 23, 2026 · Local station time · Heights in ft (MLLW)
Date Tide Curve High & Low Tides Sun Moon
Sun, May 17 2:46 AM -0.5 8:36 AM 3.2 2:12 PM -0.5 8:56 PM 4.1
5:28 AM
7:59 PM
5:28 AM
9:42 PM
New Moon · 1%
Mon, May 18 3:37 AM -0.4 9:28 AM 3.2 3:03 PM -0.4 9:49 PM 4.0
5:27 AM
8:00 PM
6:21 AM
10:51 PM
Waxing Crescent · 5%
Tue, May 19 4:29 AM -0.3 10:21 AM 3.1 3:56 PM -0.3 10:43 PM 3.8
5:26 AM
8:01 PM
7:26 AM
11:47 PM
Waxing Crescent · 11%
Wed, May 20 5:27 AM -0.2 11:16 AM 3.1 4:53 PM -0.1 11:41 PM 3.6
5:25 AM
8:02 PM
8:40 AM
Waxing Crescent · 20%
Thu, May 21 6:31 AM 0.0 12:16 PM 3.0 6:04 PM 0.1
5:25 AM
8:03 PM
9:57 AM
12:32 AM
Waxing Crescent · 30%
Fri, May 22 12:41 AM 3.3 7:34 AM 0.1 1:17 PM 3.0 7:32 PM 0.3
5:24 AM
8:04 PM
11:14 AM
1:07 AM
First Quarter · 40%
Sat, May 23 1:41 AM 3.0 8:31 AM 0.2 2:18 PM 3.0 8:50 PM 0.4
5:23 AM
8:05 PM
12:27 PM
1:36 AM
First Quarter · 52%

▲ high tide   ▼ low tide · heights in ft above MLLW · predictions derived from NOAA data for station 8459338 · view the interactive daily chart