Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, October 21, 2026
The tide is currently falling in Block Island, RI.

Next low tide : in 15m at 11:14 pm (0.5 ft)
Next high tide (tomorrow) : 5:14 am (2.8 ft)
Sunset today : 5:56 pm
Sunrise tomorrow : 7:04 am
Moon phase : Waxing Gibbous (78% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Featured Local Businesses

Champlin's Marina & Resort

New Harbor Great Salt Pond Block Island Aerial

New Shoreham (Block Island) Harbormaster

Coast Guard Station, Point Judith Rhode Island,

USCG Station Point Judith, RI

Beach in East Hampton, NY -- Nicole Mayone, CC BY-SA 2.0 , via Wikimedia Commons

East Hampton Harbormaster

Block Island, RI Tides - Dec 1799

< Nov 1799

Print this Tide Chart

Jan 1800 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Sun	10:43	3.3	11:11	2.7	3:47	0.0	5:22	0.1	6:57	4:22		1	Sun
2	Mon	11:42	3.0			4:56	0.3	6:26	0.3	6:58	4:22		2	Mon
3	Tue	12:12	2.6	12:42	2.7	6:33	0.5	7:23	0.3	6:59	4:22		3	Tue
4	Wed	1:14	2.5	1:41	2.5	7:50	0.6	8:13	0.4	7:00	4:21		4	Wed
5	Thu	2:16	2.5	2:41	2.3	8:54	0.6	8:58	0.4	7:01	4:21		5	Thu
6	Fri	3:16	2.6	3:38	2.3	9:50	0.5	9:37	0.3	7:01	4:21		6	Fri
7	Sat	4:08	2.7	4:27	2.3	10:37	0.4	10:10	0.3	7:02	4:21		7	Sat
8	Sun	4:51	2.8	5:09	2.3	11:18	0.3	10:42	0.2	7:03	4:21		8	Sun
9	Mon	5:29	2.9	5:48	2.4	11:58	0.2	11:14	0.1	7:04	4:21		9	Mon
10	Tue	6:03	3.0	6:24	2.4			12:36	0.1	7:05	4:21		10	Tue
11	Wed	6:35	3.1	7:00	2.5			1:13	0.0	7:06	4:21		11	Wed
12	Thu	7:09	3.1	7:36	2.5	12:26	0.0	1:49	0.0	7:07	4:22		12	Thu
13	Fri	7:45	3.1	8:13	2.5	1:04	0.0	2:23	0.1	7:07	4:22		13	Fri
14	Sat	8:23	3.1	8:53	2.5	1:43	0.0	2:54	0.1	7:08	4:22		14	Sat
15	Sun	9:03	3.0	9:37	2.4	2:22	0.0	3:26	0.2	7:09	4:22		15	Sun
16	Mon	9:47	2.9	10:25	2.4	3:04	0.1	4:03	0.2	7:10	4:22		16	Mon
17	Tue	10:36	2.8	11:18	2.5	3:51	0.2	4:48	0.2	7:10	4:23		17	Tue
18	Wed	11:29	2.7			4:46	0.3	5:41	0.2	7:11	4:23		18	Wed
19	Thu	12:14	2.6	12:25	2.6	5:55	0.4	6:39	0.1	7:11	4:24		19	Thu
20	Fri	1:12	2.7	1:25	2.5	7:20	0.3	7:36	0.0	7:12	4:24		20	Fri
21	Sat	2:14	2.9	2:31	2.5	8:49	0.2	8:36	-0.1	7:12	4:25		21	Sat
22	Sun	3:18	3.2	3:39	2.6	10:00	0.0	9:36	-0.2	7:13	4:25		22	Sun
23	Mon	4:18	3.5	4:42	2.7	10:59	-0.2	10:32	-0.4	7:13	4:26		23	Mon
24	Tue	5:14	3.7	5:38	2.8	11:54	-0.4	11:25	-0.5	7:14	4:26		24	Tue
25	Wed	6:07	3.8	6:31	2.9			12:46	-0.5	7:14	4:27		25	Wed
26	Thu	6:59	3.9	7:22	3.0	12:18	-0.5	1:36	-0.6	7:15	4:27		26	Thu
27	Fri	7:50	3.8	8:12	3.0	1:10	-0.6	2:23	-0.5	7:15	4:28		27	Fri
28	Sat	8:40	3.6	9:02	2.9	2:01	-0.5	3:08	-0.4	7:15	4:29		28	Sat
29	Sun	9:29	3.4	9:52	2.8	2:48	-0.3	3:53	-0.3	7:15	4:30		29	Sun
30	Mon	10:18	3.1	10:43	2.7	3:36	-0.1	4:38	-0.1	7:16	4:30		30	Mon
31	Tue	11:08	2.8	11:35	2.6	4:28	0.1	5:25	0.1	7:16	4:31		31	Tue
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (8459338)

www.USHarbors.com

The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

Is this week a spring tide or neap tide in Block Island, RI?

Block Island, RI is currently in a transitional phase. Tonight's moon is 78% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are Block Island, RI tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Block Island, RI?

Tide predictions for Block Island, RI come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Block Island, RI?

Tide data for Block Island, RI is sourced from NOAA Station #8459338. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8459338.

What is the moon phase in Block Island, RI tonight?

Tonight the moon over Block Island, RI is Waxing Gibbous (78% illuminated). This places Block Island, RI in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA

Quietly Sophisticated: The Hood 42 LM

By US Harbors At first glance, the Hood 42 LM might be confused for a boat that worked the Maine coast fifty years ago, but upon further inspection, the fifteen coats of Epifanes varnish over mahogany and custom-cast bronze hardware reveal that this boat was built for cruising. Beyond the… Learn More

Coastal Stories See All

Restored oyster reefs are monitored to ensure the oysters that grow there are thriving. Photo: Oyster Recovery Partnership.

Celebrating Oysters During Oyster Week

By fisheries.noaa.gov, fisheries.noaa.gov. Oysters are great multitaskers! They provide many benefits to the ecosystem they… More

Marine Economy Ocean Science

A snow-Tanner hybrid crab collected during the 2026 eastern Bering Sea bottom trawl survey. Hybrid crab exhibit intermediate morphological traits—such as a curved mouth—relative to snow and Tanner crab parent species. Credit: NOAA Fisheries / Leah Zacher

Marine Heatwave Triggered a Hybrid Crab Surge in the Bering Sea

By fisheries.noaa.gov, fisheries.noaa.gov. A team of scientists at the Alaska Fisheries Science Center’s Kodiak Laboratory… More

Ocean Science

A car drives through a snowstorm in Broomfield, Colorado, in 2024. (Image credit: Bob Hyatt/NOAA)

El Nino looms large over U.S. Winter Outlook

By noaa.gov, noaa.gov. NOAA’s U.S. Winter Outlook, released today, shows how El Nino will likely influence the… More

Coastal News Weather & Tides

Archival photo of New England swordfishing vessel (left) courtesy of NOAA Fisheries; Background photo and photo offloading fish (right) courtesy of Hawaii Longline Association/Eric Kingma

Highly Migratory Species Management: Managing Shared Resources at Home and Around the World

By fisheries.noaa.gov, fisheries.noaa.gov. Highly migratory species—like Atlantic yellowfin tuna, Pacific albacore, and Atlantic swordfish—travel thousands of miles across… More

Coastal News Ocean Science