How's the tide at Block Island today?
High water today at 9:44 am (3.7 ft) and 9:59 pm (3.2 ft). Low water at 3:14 am (-0.1 ft) and 3:50 pm (0.1 ft).
Times are local to Block Island (America/New_York). Heights are feet above MLLW.
Block Island — today and tomorrow
TodaySunday, September 13
| Tide | Time | Height |
|---|---|---|
| Low | 3:14 am | -0.1 ft |
| High | 9:44 am | 3.7 ft |
| Low | 3:50 pm | 0.1 ft |
| High | 9:59 pm | 3.2 ft |
Sunrise 6:24 am · Sunset 6:58 pm · Moon 7% · Air 69–72 °F · Wind 6–12 kn · Rain 100% · Mostly cloudy
Monday, September 14
| Tide | Time | Height |
|---|---|---|
| Low | 3:40 am | 0.0 ft |
| High | 10:24 am | 3.5 ft |
| Low | 4:26 pm | 0.3 ft |
| High | 10:39 pm | 2.9 ft |
Sunrise 6:25 am · Sunset 6:57 pm · Moon 14% · Air 65–74 °F · Wind 6–14 kn · Rain 44% · Mostly sunny
Block Island tide chart — next seven days
Today — Sunday, September 13
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 3:14 am | -0.1 ft | |
| High | 9:44 am | 3.7 ft | |
| Low | 3:50 pm | 0.1 ft | |
| High | 9:59 pm | 3.2 ft |
Monday, September 14
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 3:40 am | 0.0 ft | |
| High | 10:24 am | 3.5 ft | |
| Low | 4:26 pm | 0.3 ft | |
| High | 10:39 pm | 2.9 ft |
Tuesday, September 15
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 4:07 am | 0.2 ft | |
| High | 11:05 am | 3.3 ft | |
| Low | 5:02 pm | 0.5 ft | |
| High | 11:21 pm | 2.7 ft |
Wednesday, September 16
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 4:40 am | 0.4 ft | |
| High | 11:48 am | 3.0 ft | |
| Low | 5:45 pm | 0.7 ft |
Three turns fall on this date. The next one lands after midnight and is listed under the following day.
Thursday, September 17
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 12:06 am | 2.4 ft | |
| Low | 5:19 am | 0.7 ft | |
| High | 12:35 pm | 2.8 ft | |
| Low | 6:55 pm | 0.9 ft |
Friday, September 18
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 12:56 am | 2.3 ft | |
| Low | 6:07 am | 0.8 ft | |
| High | 1:30 pm | 2.6 ft | |
| Low | 8:31 pm | 1.0 ft |
Saturday, September 19
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 1:53 am | 2.1 ft | |
| Low | 7:10 am | 1.0 ft | |
| High | 2:36 pm | 2.5 ft | |
| Low | 9:44 pm | 1.0 ft |
Block Island tides — month by month
Every high and low water for September 2026 and October 2026.
Block Island tide calendar — September 2026
| Day | High water | Low water |
|---|---|---|
| 1 Tue | 11:01 am (3.5), 11:25 pm (2.9) | 4:16 am (0.0), 5:03 pm (0.4) |
| 2 Wed | 11:51 am (3.5) | 4:58 am (0.1), 6:00 pm (0.5) |
| 3 Thu | 12:19 am (2.8), 12:47 pm (3.4) | 5:47 am (0.2), 7:27 pm (0.6) |
| 4 Fri | 1:19 am (2.6), 1:50 pm (3.3) | 6:48 am (0.3), 9:05 pm (0.6) |
| 5 Sat | 2:25 am (2.6), 3:01 pm (3.2) | 8:01 am (0.4), 10:19 pm (0.5) |
| 6 Sun | 3:38 am (2.7), 4:18 pm (3.3) | 9:32 am (0.4), 11:18 pm (0.3) |
| 7 Mon | 4:50 am (2.9), 5:26 pm (3.4) | 10:57 am (0.2) |
| 8 Tue | 5:51 am (3.1), 6:21 pm (3.6) | 12:09 am (0.2), 12:01 pm (0.0) |
| 9 Wed | 6:44 am (3.4), 7:10 pm (3.7) | 12:55 am (0.0), 12:55 pm (-0.1) |
| 10 Thu | 7:33 am (3.7), 7:55 pm (3.7) | 1:36 am (-0.1), 1:45 pm (-0.2) |
| 11 Fri | 8:19 am (3.8), 8:38 pm (3.6) | 2:13 am (-0.2), 2:31 pm (-0.2) |
| 12 Sat | 9:02 am (3.8), 9:19 pm (3.4) | 2:46 am (-0.2), 3:12 pm (-0.1) |
| 13 Sun · today | 9:44 am (3.7), 9:59 pm (3.2) | 3:14 am (-0.1), 3:50 pm (0.1) |
| 14 Mon | 10:24 am (3.5), 10:39 pm (2.9) | 3:40 am (0.0), 4:26 pm (0.3) |
| 15 Tue | 11:05 am (3.3), 11:21 pm (2.7) | 4:07 am (0.2), 5:02 pm (0.5) |
| 16 Wed | 11:48 am (3.0) | 4:40 am (0.4), 5:45 pm (0.7) |
| 17 Thu | 12:06 am (2.4), 12:35 pm (2.8) | 5:19 am (0.7), 6:55 pm (0.9) |
| 18 Fri | 12:56 am (2.3), 1:30 pm (2.6) | 6:07 am (0.8), 8:31 pm (1.0) |
| 19 Sat | 1:53 am (2.1), 2:36 pm (2.5) | 7:10 am (1.0), 9:44 pm (1.0) |
| 20 Sun | 3:01 am (2.1), 3:57 pm (2.6) | 8:37 am (1.0), 10:41 pm (0.9) |
| 21 Mon | 4:19 am (2.2), 5:00 pm (2.7) | 10:20 am (0.9), 11:26 pm (0.7) |
| 22 Tue | 5:15 am (2.4), 5:44 pm (2.9) | 11:17 am (0.7) |
| 23 Wed | 5:57 am (2.7), 6:20 pm (3.0) | 12:04 am (0.5), 12:03 pm (0.5) |
| 24 Thu | 6:33 am (3.0), 6:54 pm (3.2) | 12:36 am (0.4), 12:45 pm (0.3) |
| 25 Fri | 7:09 am (3.3), 7:30 pm (3.3) | 1:04 am (0.2), 1:25 pm (0.1) |
| 26 Sat | 7:46 am (3.5), 8:08 pm (3.3) | 1:32 am (0.0), 2:05 pm (0.0) |
| 27 Sun | 8:25 am (3.7), 8:48 pm (3.3) | 2:01 am (-0.1), 2:44 pm (0.0) |
| 28 Mon | 9:07 am (3.8), 9:31 pm (3.2) | 2:34 am (-0.2), 3:24 pm (0.0) |
| 29 Tue | 9:51 am (3.8), 10:18 pm (3.1) | 3:10 am (-0.2), 4:06 pm (0.1) |
| 30 Wed | 10:39 am (3.7), 11:09 pm (2.9) | 3:51 am (-0.1), 4:54 pm (0.2) |
Times local to Block Island, heights in feet above MLLW.
Block Island tide calendar — October 2026
| Day | High water | Low water |
|---|---|---|
| 1 Thu | 11:32 am (3.6) | 4:36 am (0.0), 5:59 pm (0.4) |
| 2 Fri | 12:06 am (2.8), 12:33 pm (3.4) | 5:30 am (0.2), 7:38 pm (0.5) |
| 3 Sat | 1:09 am (2.7), 1:41 pm (3.2) | 6:38 am (0.4), 8:58 pm (0.5) |
| 4 Sun | 2:17 am (2.7), 2:53 pm (3.2) | 8:14 am (0.5), 10:03 pm (0.4) |
| 5 Mon | 3:29 am (2.8), 4:07 pm (3.2) | 9:53 am (0.4), 10:58 pm (0.3) |
| 6 Tue | 4:39 am (3.0), 5:11 pm (3.2) | 11:02 am (0.3), 11:45 pm (0.1) |
| 7 Wed | 5:37 am (3.3), 6:03 pm (3.3) | 11:58 am (0.1) |
| 8 Thu | 6:27 am (3.6), 6:49 pm (3.3) | 12:26 am (0.0), 12:48 pm (0.0) |
| 9 Fri | 7:12 am (3.7), 7:32 pm (3.3) | 1:02 am (-0.1), 1:32 pm (0.0) |
| 10 Sat | 7:55 am (3.8), 8:12 pm (3.2) | 1:35 am (-0.1), 2:13 pm (0.0) |
| 11 Sun | 8:35 am (3.8), 8:51 pm (3.1) | 2:03 am (-0.1), 2:50 pm (0.0) |
| 12 Mon | 9:14 am (3.6), 9:30 pm (3.0) | 2:30 am (0.0), 3:23 pm (0.1) |
| 13 Tue | 9:51 am (3.4), 10:08 pm (2.8) | 2:58 am (0.1), 3:54 pm (0.3) |
| 14 Wed | 10:28 am (3.2), 10:48 pm (2.6) | 3:30 am (0.3), 4:27 pm (0.4) |
| 15 Thu | 11:08 am (2.9), 11:32 pm (2.4) | 4:05 am (0.5), 5:06 pm (0.6) |
| 16 Fri | 11:53 am (2.7) | 4:45 am (0.7), 6:01 pm (0.8) |
| 17 Sat | 12:22 am (2.2), 12:47 pm (2.6) | 5:33 am (0.8), 7:48 pm (0.9) |
| 18 Sun | 1:18 am (2.1), 1:47 pm (2.5) | 6:35 am (1.0), 9:02 pm (0.9) |
| 19 Mon | 2:19 am (2.1), 2:52 pm (2.5) | 8:02 am (1.0), 9:57 pm (0.8) |
| 20 Tue | 3:26 am (2.2), 3:58 pm (2.6) | 9:48 am (0.9), 10:40 pm (0.7) |
| 21 Wed | 4:27 am (2.5), 4:51 pm (2.7) | 10:49 am (0.7), 11:14 pm (0.5) |
| 22 Thu | 5:14 am (2.8), 5:35 pm (2.8) | 11:37 am (0.5), 11:45 pm (0.3) |
| 23 Fri | 5:55 am (3.1), 6:16 pm (3.0) | 12:21 pm (0.2) |
| 24 Sat | 6:34 am (3.5), 6:58 pm (3.1) | 12:14 am (0.1), 1:03 pm (0.0) |
| 25 Sun | 7:15 am (3.8), 7:41 pm (3.2) | 12:47 am (-0.1), 1:45 pm (-0.1) |
| 26 Mon | 7:58 am (4.0), 8:26 pm (3.2) | 1:24 am (-0.3), 2:28 pm (-0.2) |
| 27 Tue | 8:44 am (4.0), 9:13 pm (3.2) | 2:04 am (-0.3), 3:13 pm (-0.2) |
| 28 Wed | 9:32 am (4.0), 10:02 pm (3.1) | 2:47 am (-0.3), 3:59 pm (-0.1) |
| 29 Thu | 10:23 am (3.8), 10:56 pm (3.0) | 3:34 am (-0.2), 4:53 pm (0.0) |
| 30 Fri | 11:20 am (3.6), 11:55 pm (2.9) | 4:24 am (-0.1), 6:05 pm (0.2) |
| 31 Sat | 12:23 pm (3.4) | 5:22 am (0.1), 7:27 pm (0.3) |
Times local to Block Island, heights in feet above MLLW.
Wind and weather at Block Island
Seven days from the National Weather Service forecast for this stretch of coast. Each row is the range across the whole day, not a reading for one moment.
| Day | Wind | Gusts | Air | Sky | Rain |
|---|---|---|---|---|---|
| Today | 6–12 kn SSE | 16 kn | 69–72 °F | Mostly cloudy | 100 % |
| Mon, September 14 | 6–14 kn NNW | 20 kn | 65–74 °F | Mostly sunny | 44 % |
| Tue, September 15 | 5–14 kn NNE | 17 kn | 59–63 °F | Clear | 0 % |
| Wed, September 16 | 3–9 kn SSW | 11 kn | 60–70 °F | Mostly sunny | 0 % |
| Thu, September 17 | 4–8 kn S | 10 kn | 62–71 °F | Mostly sunny | 12 % |
| Fri, September 18 | 7–12 kn SW | 15 kn | 62–71 °F | Partly cloudy | 23 % |
| Sat, September 19 | 11–13 kn E | 16 kn | 60–67 °F | Partly cloudy | 37 % |
Source: NOAA National Weather Service, forecast office BOX. Public domain. Wind in knots, from the direction given. The forecast grid for this place carries no wave heights, so none are shown.
Boating, beach and fishing at Block Island
The same forecast as above, read for three things people do here. Each verdict names what decided it.
| Day | Boating | Beach | Fishing |
|---|---|---|---|
| Today | Goodwind 12 kn or less | Poor100% chance of rain | Fair100% chance of rain |
| Mon, September 14 | Fairgusts to 20 kn | Fair44% chance of rain | Goodlight wind, major window in daylight |
| Tue, September 15 | Goodwind 14 kn or less | Pooronly 63 °F | Goodlight wind, major window in daylight |
| Wed, September 16 | Goodwind 9 kn or less | Fair70 °F | Goodlight wind, major window in daylight |
| Thu, September 17 | Goodwind 8 kn or less | Fair71 °F | Goodlight wind, major window in daylight |
| Fri, September 18 | Goodwind 12 kn or less | Fair71 °F | Goodlight wind, major window in daylight |
| Sat, September 19 | Goodwind 13 kn or less | Fair37% chance of rain | Goodlight wind, major window in daylight |
Boating turns to Poor at the National Weather Service small craft threshold — sustained wind of 22 kn, gusts of 26 kn, or seas of 5 ft — and to Fair at 15 kn or 3 ft. Beach weighs air temperature, chance of rain and wind.Fishing asks whether the day is fishable at all and whether a solunar major window falls in daylight; it is not a prediction of what will bite. None of this replaces the marine forecast before you go out.
Sun and moon
Today
Sunrise 6:24 am · Sunset 6:58 pm
Moon 7% lit, waxing
Tomorrow
Sunrise 6:25 am · Sunset 6:57 pm
Moon 14% lit, waxing
Solunar windows for Block Island
The moon pulls hardest when it is directly overhead or on the far side of the earth — the two major windows of about two hours. The shorter minor windows sit around moonrise and moonset. Anglers use them to pick a time on the water; they are computed from the moon's position, not measured.
Today — Sunday, September 13
- Major1:13 am – 3:13 amMoon underfoot
- Minor8:38 am – 9:38 amMoonrise
- Major1:35 pm – 3:35 pmMoon overhead
- Minor7:23 pm – 8:23 pmMoonset
Monday, September 14
- Major1:58 am – 3:58 amMoon underfoot
- Minor9:46 am – 10:46 amMoonrise
- Major2:21 pm – 4:21 pmMoon overhead
- Minor7:49 pm – 8:49 pmMoonset
Times are local to Block Island (America/New_York).
Questions about Block Island tides
Answered from the same NOAA predictions as the table above; the solunar windows come from this page's own moon calculation. Where this page has no basis for an answer, there is no entry.
- What time is high tide in Block Island today?
- High water at 9:44 am (3.7 ft) and 9:59 pm (3.2 ft), local time in Block Island. Heights are feet above MLLW. Because the tide runs on the moon rather than the clock, each turn falls roughly 50 minutes later tomorrow — the seven-day table above carries the shift.
- What time is low tide in Block Island today?
- Low water at 3:14 am (-0.1 ft) and 3:50 pm (0.1 ft), local time in Block Island. A height below zero is a minus tide: the water falls further than MLLW, the level the heights are counted from.
- How many tides does Block Island get in a day?
- Two high waters and two low waters on most days, a little over six hours apart. Over the seven days on this page that comes to 13 high waters and 14 low waters. Where a date shows only three turns, the fourth has slipped past midnight and is listed under the following day.
- What is the tidal range at Block Island?
- About 3.8 ft between today's lowest and highest water. Across the next seven days the water moves between -0.1 and 3.7 ft — a span of about 3.8 ft. The range is widest around new and full moon and narrowest at the quarters, so it changes from week to week.
- Which tide station do these Block Island tide times come from?
- NOAA station 8459338, Block Island (Old Harbor) — a reference station. Old Harbor on the east side of the island. A reference station has its own long-running record, which is the strongest basis NOAA publishes. The predictions here are NOAA's, unchanged.
- What time zone are the Block Island tide times in?
- Every time on this page is clock time in Block Island — the America/New_York zone, daylight saving already applied. Nothing has to be converted, and no time is shown in UTC except the retrieval stamp at the foot of the page.
- When are the solunar windows at Block Island today?
- The major windows run 1:13 am to 3:13 am and 1:35 pm to 3:35 pm, with shorter minor windows around moonrise and moonset. They are computed from the moon's position over Block Island, not measured — anglers use them to pick a time on the water. The moon is 7% lit and waxing.
- How far ahead does this Block Island tide chart go?
- Seven days in the table, and every high and low water for September 2026 and October 2026 in the calendar below it. The page is rebuilt every morning, so the first day is always today.
Block Island on the map
Block Island and the 6 nearest places with their own NOAA station. Every marker opens that place’s tide chart.
Choose a place on the map
Every marker opens its local tide chart.
Nearby tide charts
Where these times come from
- Source
- NOAA Center for Operational Oceanographic Products and Services — station 8459338, Block Island (reference station)
- Datum
- MLLW — heights in feet above mean lower low water
- Retrieved
- Sep 13, 2026, 2:30 PM UTC
- Licence
- Public domain (US federal government data). NOS requests that attribution be given whenever NOS material is reproduced and re-disseminated.
Old Harbor on the east side of the island.
Predictions are issued by NOAA. The official NOAA data are authoritative. Not for navigation. Check the official NOAA station page before you rely on these times on the water.