Brant Rock, Green Harbor River tide chart
Massachusetts · Green Harbor-Cedar Crest · NOAA station 8446009 · times in local time (EDT)
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Tides today, Sunday, October 11
- High 12:13 AM 9.7 ft
- Low 6:11 AM 0.3 ft
- High 12:26 PM 10.2 ft
- Low 6:39 PM -0.3 ft
Were today's predicted times right where you were?
Sunrise 6:51 AM · Sunset 6:09 PM · New moon (0%)
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Weather and conditions at Brant Rock, Green Harbor River
Loading the National Weather Service forecast… Open it on weather.gov.
- Nearest weather buoy BOSTON 16 NM East of Boston, MA (18 mi): waves, wind and water temperature
Marine radio: weather channels and VHF
NOAA Weather Radio
- 162.475 MHz WX3 KHB35, Boston, MA (26 mi)
- 162.550 MHz WX1 KEC73, Bourne/Hyannis, MA (26 mi)
VHF marine channels
- Ch 16 Distress, safety and calling
- Ch 9 Boater-to-boater calling
- Ch 22A Coast Guard safety broadcasts
- Ch 13 Bridge-to-bridge (big ships, drawbridges)
- Ch 68, 69, 71, 72, 78A Recreational chat
Weather radio broadcasts are continuous; VHF channels are the US standard. Local harbors and bridges may use others, so check your chart.
Live readings from NOAA and the National Weather Service, loaded when you open this page.
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Tide times this week
| Day | High and low tides | Sunrise / sunset | Moon |
|---|---|---|---|
| Sun Oct 11 | H 12:13 AM 9.7 ftL 6:11 AM 0.3 ftH 12:26 PM 10.2 ftL 6:39 PM -0.3 ft | 6:51 AM / 6:09 PM | New moon (0%) |
| Mon Oct 12 | H 12:55 AM 9.4 ftL 6:51 AM 0.6 ftH 1:05 PM 10.1 ftL 7:21 PM -0.1 ft | 6:52 AM / 6:07 PM | New moon (2%) |
| Tue Oct 13 | H 1:36 AM 9.1 ftL 7:30 AM 0.9 ftH 1:44 PM 9.8 ftL 8:02 PM 0.1 ft | 6:53 AM / 6:06 PM | Waxing crescent (6%) |
| Wed Oct 14 | H 2:16 AM 8.7 ftL 8:10 AM 1.3 ftH 2:23 PM 9.6 ftL 8:44 PM 0.5 ft | 6:54 AM / 6:04 PM | Waxing crescent (12%) |
| Thu Oct 15 | H 2:59 AM 8.3 ftL 8:53 AM 1.6 ftH 3:06 PM 9.2 ftL 9:29 PM 0.8 ft | 6:55 AM / 6:02 PM | Waxing crescent (19%) |
| Fri Oct 16 | H 3:44 AM 8.0 ftL 9:39 AM 2.0 ftH 3:53 PM 8.9 ftL 10:18 PM 1.1 ft | 6:57 AM / 6:01 PM | Waxing crescent (28%) |
| Sat Oct 17 | H 4:33 AM 7.7 ftL 10:28 AM 2.2 ftH 4:44 PM 8.6 ftL 11:10 PM 1.4 ft | 6:58 AM / 5:59 PM | First quarter (38%) |
Best fishing times at Brant Rock, Green Harbor River
Solunar periods for this spot: major periods (about two hours) are centred on the moon passing overhead or underfoot, and minor periods (about an hour) on moonrise and moonset. Days near the new and full moon rate higher, and so does a period that lines up with sunrise, sunset or a turn of the tide.
| Day | Rating | Major periods | Minor periods |
|---|---|---|---|
| Sun Oct 11 | Excellent | 11:54 PM–1:54 AM, 12:16 PM–2:16 PM | 7:35 AM–8:35 AM, 5:49 PM–6:49 PM |
| Mon Oct 12 | Excellent | 12:39 AM–2:39 AM, 1:03 PM–3:03 PM | 8:42 AM–9:42 AM, 6:16 PM–7:16 PM |
| Tue Oct 13 | Excellent | 1:27 AM–3:27 AM, 1:51 PM–3:51 PM | 9:48 AM–10:48 AM, 6:49 PM–7:49 PM |
| Wed Oct 14 | Fair | 2:16 AM–4:16 AM, 2:41 PM–4:41 PM | 10:51 AM–11:51 AM, 7:28 PM–8:28 PM |
| Thu Oct 15 | Good | 3:06 AM–5:06 AM, 3:32 PM–5:32 PM | 11:48 AM–12:48 PM, 8:15 PM–9:15 PM |
| Fri Oct 16 | Fair | 3:57 AM–5:57 AM, 4:22 PM–6:22 PM | 12:37 PM–1:37 PM, 9:09 PM–10:09 PM |
| Sat Oct 17 | Fair | 4:47 AM–6:47 AM, 5:12 PM–7:12 PM | 1:19 PM–2:19 PM, 10:10 PM–11:10 PM |
Solunar times are a rule of thumb many anglers use, not a guarantee. Moving water around a tide change usually matters as much.
Best daylight low tides in the next two weeks
The lowest water that falls between sunrise and sunset, for tide pooling and beachcombing.
- 0.3 ft at 4:40 PM on Saturday, October 24
- 0.9 ft at 3:54 PM on Friday, October 23
- 0.9 ft at 7:30 AM on Tuesday, October 13
- 1.3 ft at 8:10 AM on Wednesday, October 14
- 1.4 ft at 3:07 PM on Thursday, October 22
- 1.6 ft at 8:53 AM on Thursday, October 15
Tide table: October 11 to November 10, 2026
Full 2026 tide table Full 2027 tide table
| Day | High and low tides | Sunrise / sunset |
|---|---|---|
| Sun Oct 11 | H 12:13 AM 9.7 ftL 6:11 AM 0.3 ftH 12:26 PM 10.2 ftL 6:39 PM -0.3 ft | 6:51 AM / 6:09 PM |
| Mon Oct 12 | H 12:55 AM 9.4 ftL 6:51 AM 0.6 ftH 1:05 PM 10.1 ftL 7:21 PM -0.1 ft | 6:52 AM / 6:07 PM |
| Tue Oct 13 | H 1:36 AM 9.1 ftL 7:30 AM 0.9 ftH 1:44 PM 9.8 ftL 8:02 PM 0.1 ft | 6:53 AM / 6:06 PM |
| Wed Oct 14 | H 2:16 AM 8.7 ftL 8:10 AM 1.3 ftH 2:23 PM 9.6 ftL 8:44 PM 0.5 ft | 6:54 AM / 6:04 PM |
| Thu Oct 15 | H 2:59 AM 8.3 ftL 8:53 AM 1.6 ftH 3:06 PM 9.2 ftL 9:29 PM 0.8 ft | 6:55 AM / 6:02 PM |
| Fri Oct 16 | H 3:44 AM 8.0 ftL 9:39 AM 2.0 ftH 3:53 PM 8.9 ftL 10:18 PM 1.1 ft | 6:57 AM / 6:01 PM |
| Sat Oct 17 | H 4:33 AM 7.7 ftL 10:28 AM 2.2 ftH 4:44 PM 8.6 ftL 11:10 PM 1.4 ft | 6:58 AM / 5:59 PM |
| Sun Oct 18 | H 5:27 AM 7.5 ftL 11:23 AM 2.4 ftH 5:40 PM 8.4 ft | 6:59 AM / 5:58 PM |
| Mon Oct 19 | L 12:06 AM 1.6 ftH 6:25 AM 7.5 ftL 12:21 PM 2.4 ftH 6:39 PM 8.3 ft | 7:00 AM / 5:56 PM |
| Tue Oct 20 | L 1:02 AM 1.6 ftH 7:23 AM 7.6 ftL 1:20 PM 2.2 ftH 7:38 PM 8.4 ft | 7:01 AM / 5:55 PM |
| Wed Oct 21 | L 1:56 AM 1.5 ftH 8:16 AM 8.0 ftL 2:16 PM 1.9 ftH 8:32 PM 8.6 ft | 7:02 AM / 5:53 PM |
| Thu Oct 22 | L 2:46 AM 1.3 ftH 9:03 AM 8.4 ftL 3:07 PM 1.4 ftH 9:22 PM 8.8 ft | 7:04 AM / 5:52 PM |
| Fri Oct 23 | L 3:31 AM 1.1 ftH 9:46 AM 8.9 ftL 3:54 PM 0.9 ftH 10:09 PM 9.0 ft | 7:05 AM / 5:50 PM |
| Sat Oct 24 | L 4:14 AM 0.8 ftH 10:27 AM 9.5 ftL 4:40 PM 0.3 ftH 10:53 PM 9.2 ft | 7:06 AM / 5:49 PM |
| Sun Oct 25 | L 4:55 AM 0.6 ftH 11:08 AM 10.0 ftL 5:24 PM -0.2 ftH 11:37 PM 9.4 ft | 7:07 AM / 5:47 PM |
| Mon Oct 26 | L 5:37 AM 0.5 ftH 11:49 AM 10.5 ftL 6:09 PM -0.7 ft | 7:08 AM / 5:46 PM |
| Tue Oct 27 | H 12:21 AM 9.5 ftL 6:20 AM 0.3 ftH 12:32 PM 10.8 ftL 6:55 PM -1.0 ft | 7:10 AM / 5:44 PM |
| Wed Oct 28 | H 1:07 AM 9.6 ftL 7:05 AM 0.3 ftH 1:17 PM 11.1 ftL 7:43 PM -1.1 ft | 7:11 AM / 5:43 PM |
| Thu Oct 29 | H 1:55 AM 9.5 ftL 7:53 AM 0.3 ftH 2:07 PM 11.1 ftL 8:35 PM -1.0 ft | 7:12 AM / 5:42 PM |
| Fri Oct 30 | H 2:48 AM 9.3 ftL 8:45 AM 0.4 ftH 3:01 PM 10.9 ftL 9:30 PM -0.7 ft | 7:13 AM / 5:40 PM |
| Sat Oct 31 | H 3:44 AM 9.1 ftL 9:43 AM 0.6 ftH 4:00 PM 10.6 ftL 10:29 PM -0.4 ft | 7:15 AM / 5:39 PM |
| Sun Nov 1 | H 3:45 AM 8.9 ftL 9:45 AM 0.8 ftH 4:04 PM 10.2 ftL 10:30 PM -0.1 ft | 6:16 AM / 4:38 PM |
| Mon Nov 2 | H 4:50 AM 8.9 ftL 10:51 AM 0.9 ftH 5:11 PM 9.9 ftL 11:34 PM 0.1 ft | 6:17 AM / 4:36 PM |
| Tue Nov 3 | H 5:57 AM 9.1 ftL 11:59 AM 0.8 ftH 6:20 PM 9.7 ft | 6:18 AM / 4:35 PM |
| Wed Nov 4 | L 12:37 AM 0.2 ftH 7:01 AM 9.4 ftL 1:06 PM 0.6 ftH 7:26 PM 9.5 ft | 6:20 AM / 4:34 PM |
| Thu Nov 5 | L 1:36 AM 0.3 ftH 7:59 AM 9.7 ftL 2:08 PM 0.3 ftH 8:26 PM 9.4 ft | 6:21 AM / 4:33 PM |
| Fri Nov 6 | L 2:30 AM 0.4 ftH 8:51 AM 9.9 ftL 3:03 PM 0.1 ftH 9:21 PM 9.3 ft | 6:22 AM / 4:32 PM |
| Sat Nov 7 | L 3:19 AM 0.5 ftH 9:39 AM 10.1 ftL 3:53 PM -0.1 ftH 10:10 PM 9.2 ft | 6:23 AM / 4:31 PM |
| Sun Nov 8 | L 4:04 AM 0.7 ftH 10:22 AM 10.1 ftL 4:38 PM -0.1 ftH 10:55 PM 9.0 ft | 6:25 AM / 4:29 PM |
| Mon Nov 9 | L 4:45 AM 0.9 ftH 11:01 AM 10.0 ftL 5:19 PM 0.0 ftH 11:35 PM 8.8 ft | 6:26 AM / 4:28 PM |
| Tue Nov 10 | L 5:24 AM 1.2 ftH 11:39 AM 9.8 ftL 5:58 PM 0.1 ft | 6:27 AM / 4:27 PM |
Heights are in feet above mean lower low water (MLLW), the zero line on most US nautical charts. A minus height means the water drops below that line.
Around Brant Rock, Green Harbor River
Beaches
- Shipyard Lane Beach 4.1 mi
- Standish Shore 4.7 mi
- Captain's Flats 5.5 mi
- Saquish Beach 5.8 mi
Distances from the tide station. Places from © OpenStreetMap contributors; links open in Google Maps.
About the tides at Brant Rock, Green Harbor River
Brant Rock, Green Harbor River gets two high tides and two low tides almost every day, and the two highs are close in height. Over the next month the water typically rises or falls about 8.7 ft between a high and the next low.
The biggest swings in this window come around Wednesday, October 28, when the day's range reaches 12.1 ft, and again around Sunday, October 11 (10.5 ft). Those spring tides follow the new and full moon by a day or two. The calmest day is Monday, October 19, with only 6.7 ft between the day's highest and lowest water.
The lowest tide of the month is -1.1 ft at 7:43 PM on Wednesday, October 28. There are 13 minus tides (lows below the chart's zero line) in this window: the best times for tide pools, clamming and walking the flats.
The highest predicted tide is 11.1 ft at 1:17 PM on Wednesday, October 28. Onshore wind or a storm can push the real water level above that.
This is a reference (harmonic) station: NOAA predicts its tides directly from years of measured water levels here, which makes it among the most reliable predictions on the coast.
Station details
- NOAA station ID: 8446009
- Type: reference (harmonic)
- Location: 42.0833, -70.6467
Nearby tide stations
- Duxbury, Duxbury Harbor 3 mi
- Damons Point, North River 7 mi
- Plymouth 9 mi
- Scituate, Scituate Harbor 9 mi
- Cohasset Harbor (White Head) 13 mi
- Hingham 17 mi