Latest Tide Table

Tide Times for Castle Island, Boston Harbor

Lat Long: 42.33° N 71.02° W

Today's tide times for Castle Island, Boston Harbor, Massachusetts

The predicted tide times today on Tuesday 23 June 2026 for Castle Island, Boston Harbor are: first low tide at 00:42am, first high tide at 6:54am, second low tide at 1:00pm, second high tide at 7:22pm. Sunrise is at 5:07am and sunset is at 8:24pm.

Today's tide times for Castle Island, Boston Harbor: Tuesday 23 June 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide00:42 AM(Tue 23 June)1.07 ft (0.33 m)
High Tide 6:54 AM(Tue 23 June)8.94 ft (2.72 m)
Low Tide 1:00 PM(Tue 23 June)1.13 ft (0.34 m)
High Tide 7:22 PM(Tue 23 June)9.64 ft (2.94 m)
Tide Datum: -
TideHigh
TideLow
Tide Rising
  • Wind Speed
    -
  • Swell
    —
  • Weather
High tide in:
Live Tide
Next Tide State HIGH TIDE in Castle Island, Boston Harbor is at
which is in from now.
Next Tide Falling LOW TIDE in Castle Island, Boston Harbor is at
which is in from now.
The tide is .Tide state rising
Local time:

Tide chart for Castle Island, Boston HarborShowing low and high tide times for the next 30 days at Castle Island, Boston Harbor. Tide Times are EDT (UTC -4.0hrs).

View Castle Island, Boston Harbor 7 Day Tide Chart Image.

Castle Island, Boston Harbor, Massachusetts Tide Chart including high and low tide times for the next 7 days
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Click Tap Expand to expand the day into detailed view, Click Tap any to view the height and time.

HIGH
(EDT)
LOW
(EDT)
Sun
Moon
Set
Rise
Wind

Tuesday, 23 Jun
24 Jun
25 Jun
26 Jun
27 Jun
28 Jun
29 Jun
30 Jun
1 Jul
2 Jul
3 Jul
4 Jul
5 Jul
6 Jul
7 Jul
8 Jul
9 Jul
10 Jul
11 Jul
12 Jul
13 Jul
14 Jul
15 Jul
16 Jul
17 Jul
18 Jul
19 Jul
20 Jul
21 Jul
22 Jul
AMPMWedThuFriSatSunMonTueWedThuFriSatSunMonTueWedThuFriSatSunMonTueWedThuFriSatSunMonTueWed
6:54AM2.72m
7:22PM2.94m
7:53AM2.62m
8:15PM2.93m
8:51AM2.56m
9:04PM2.94m
9:44AM2.54m
9:51PM2.95m
10:33AM2.54m
10:36PM2.98m
11:18AM2.56m
11:18PM3.01m
12:00PM2.59m
11:59PM3.04m
12:39PM2.62m
00:39AM3.05m
1:18PM2.64m
1:18AM3.05m
1:56PM2.68m
1:58AM3.04m
2:35PM2.72m
2:38AM3.01m
3:14PM2.76m
3:20AM2.96m
3:54PM2.82m
4:06AM2.90m
4:38PM2.89m
4:55AM2.84m
5:24PM2.97m
5:48AM2.78m
6:14PM3.06m
6:45AM2.74m
7:08PM3.16m
7:46AM2.73m
8:04PM3.26m
8:47AM2.75m
9:03PM3.37m
9:48AM2.81m
10:02PM3.48m
10:48AM2.90m
11:00PM3.56m
11:45AM2.98m
11:56PM3.60m
12:40PM3.06m
00:51AM3.58m
1:33PM3.12m
1:45AM3.51m
2:24PM3.14m
2:39AM3.36m
3:15PM3.13m
3:31AM3.18m
4:05PM3.09m
4:25AM2.98m
4:55PM3.02m
5:21AM2.78m
5:47PM2.94m
6:18AM2.62m
6:40PM2.88m
00:42AM0.33m
1:00PM0.34m
1:43AM0.34m
1:54PM0.45m
2:41AM0.32m
2:45PM0.52m
3:35AM0.29m
3:34PM0.55m
4:23AM0.25m
4:20PM0.55m
5:07AM0.21m
5:04PM0.53m
5:47AM0.17m
5:46PM0.50m
6:27AM0.14m
6:27PM0.47m
7:05AM0.12m
7:08PM0.44m
7:43AM0.10m
7:49PM0.43m
8:22AM0.09m
8:31PM0.41m
9:01AM0.10m
9:15PM0.39m
9:42AM0.12m
10:01PM0.36m
10:25AM0.15m
10:50PM0.32m
11:11AM0.19m
11:43PM0.27m
12:01PM0.23m
00:40AM0.19m
12:55PM0.25m
1:40AM0.09m
1:52PM0.25m
2:40AM-0.03m
2:50PM0.21m
3:40AM-0.16m
3:49PM0.14m
4:38AM-0.28m
4:47PM0.06m
5:34AM-0.37m
5:43PM-0.02m
6:27AM-0.42m
6:38PM-0.07m
7:19AM-0.42m
7:32PM-0.08m
8:09AM-0.35m
8:25PM-0.05m
8:58AM-0.23m
9:19PM0.03m
9:47AM-0.07m
10:13PM0.13m
10:36AM0.11m
11:09PM0.23m
11:27AM0.30m
00:07AM0.33m
12:19PM0.45m
tide state
5:07AM
tide state
8:24PM
5:08AM
8:24PM
5:08AM
8:24PM
5:08AM
8:24PM
5:09AM
8:24PM
5:09AM
8:24PM
5:10AM
8:24PM
5:10AM
8:24PM
5:11AM
8:24PM
5:11AM
8:24PM
5:12AM
8:24PM
5:12AM
8:23PM
5:13AM
8:23PM
5:13AM
8:23PM
5:14AM
8:23PM
5:15AM
8:22PM
5:15AM
8:22PM
5:16AM
8:21PM
5:17AM
8:21PM
5:18AM
8:20PM
5:18AM
8:20PM
5:19AM
8:19PM
5:20AM
8:18PM
5:21AM
8:18PM
5:22AM
8:17PM
5:23AM
8:16PM
5:24AM
8:16PM
5:25AM
8:15PM
5:26AM
8:14PM
5:26AM
8:13PM
0.29% - (Waxing Gibbous)
tide state
00:57AM
0.31% - (Waxing Gibbous)
tide state
2:47PM
0.35% - (Waxing Gibbous)
1:19AM
3:52PM
0.39% - (Waxing Gibbous)
1:43AM
4:57PM
0.42% - (Waxing Gibbous)
2:12AM
6:00PM
0.46% - (Waxing Gibbous)
2:47AM
7:00PM
0.49% - (Full Moon)
3:30AM
7:55PM
0.53% - (Full Moon)
4:20AM
8:42PM
0.56% - (Waning Gibbous)
5:18AM
9:21PM
0.6% - (Waning Gibbous)
6:21AM
9:53PM
0.63% - (Waning Gibbous)
7:27AM
10:20PM
0.66% - (Waning Gibbous)
8:32AM
10:43PM
0.7% - (Waning Gibbous)
9:38AM
11:04PM
0.73% - (Last Quarter)
10:44AM
11:24PM
0.77% - (Last Quarter)
11:51AM
11:44PM
0.79% - (Waning Crescent)
1:00PM

0.8% - (Waning Crescent)
2:13PM
00:06AM
0.84% - (Waning Crescent)
3:30PM
00:32AM
0.87% - (Waning Crescent)
4:49PM
1:05AM
0.91% - (Waning Crescent)
6:06PM
1:48AM
0.94% - (Waning Crescent)
7:16PM
2:43AM
0.98% - (New Moon)
8:12PM
3:52AM
0.03% - (New Moon)
8:56PM
5:12AM
0.07% - (Waxing Crescent)
9:29PM
6:34AM
0.1% - (Waxing Crescent)
9:56PM
7:54AM
0.14% - (Waxing Crescent)
10:19PM
9:09AM
0.17% - (Waxing Crescent)
10:40PM
10:21AM
0.21% - (Waxing Crescent)
11:01PM
11:29AM
0.24% - (First Quarter)
11:22PM
12:36PM
0.28% - (First Quarter)
11:46PM
1:42PM
0.31% - (Waxing Gibbous)

2:47PM
10
SSE
10
N
0
NNW
5
W
10
NW
10
SW
10
WSW
10
ENE
10
ENE
10
WSW
25
SW
15
NE
10
E
5
NW
15
WSW
20
NNW
15
WNW
10
WNW
0
ESE
5
NE
heavy rainmod raincloudrain showersclearcloudcloudpart cloudclearcloudpart cloudclearclearclearpart cloudclearclearclearpart cloudclear

Castle Island, Boston Harbor tide chart key:

The tide chart above shows the height and times of high tide and low tide for Castle Island, Boston Harbor, Massachusetts. The red flashing dot shows the tide time right now. The grey shading corresponds to nighttime hours between sunset and sunrise at Castle Island, Boston Harbor.

Tide Times are EDT (UTC -4.0hrs). Last Spring High Tide at Castle Island, Boston Harbor was on Mon 15 Jun (height: 3.66m 12.0ft). Next high Spring Tide at Castle Island, Boston Harbor will be on Tue 30 Jun (height: 3.05m 10.0ft).

Castle Island, Boston Harbor tide chart key: The tide chart above shows the height and times of high tide and low tide for Castle Island, Boston Harbor, Massachusetts. The grey shading corresponds to nighttime hours between sunset and sunrise at Castle Island, Boston Harbor.

Tide Times are EDT (UTC -4.0hrs). Last Spring High Tide at Castle Island, Boston Harbor was on Mon 15 Jun (height: 3.66m 12.0ft). Next high Spring Tide at Castle Island, Boston Harbor will be on Tue 30 Jun (height: 3.05m 10.0ft).

Castle Island, Boston Harbor tide times for June and July

June and July Tide charts for Castle Island, Boston Harbor: The tide charts below show the height, time and date of high and low tides for the next 30 days.

Tide Times for Castle Island, Boston Harbor (tomorrow): Wednesday 24 June 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 1:43 AM(Wed 24 June)1.11 ft (0.34 m)
High Tide 7:53 AM(Wed 24 June)8.59 ft (2.62 m)
Low Tide 1:54 PM(Wed 24 June)1.47 ft (0.45 m)
High Tide 8:15 PM(Wed 24 June)9.62 ft (2.93 m)
tide stateSunrise: 5:08AMtide stateSunset: 8:24PMtide stateMoonset: 1:19AMtide stateMoonrise: 3:52PM

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Tide Times for Castle Island, Boston Harbor: Thursday 25 June 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 2:41 AM(Thu 25 June)1.05 ft (0.32 m)
High Tide 8:51 AM(Thu 25 June)8.4 ft (2.56 m)
Low Tide 2:45 PM(Thu 25 June)1.69 ft (0.52 m)
High Tide 9:04 PM(Thu 25 June)9.64 ft (2.94 m)
tide stateSunrise: 5:08AMtide stateSunset: 8:24PMtide stateMoonset: 1:43AMtide stateMoonrise: 4:57PM

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Tide Times for Castle Island, Boston Harbor: Friday 26 June 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 3:35 AM(Fri 26 June)0.94 ft (0.29 m)
High Tide 9:44 AM(Fri 26 June)8.33 ft (2.54 m)
Low Tide 3:34 PM(Fri 26 June)1.79 ft (0.55 m)
High Tide 9:51 PM(Fri 26 June)9.69 ft (2.95 m)
tide stateSunrise: 5:08AMtide stateSunset: 8:24PMtide stateMoonset: 2:12AMtide stateMoonrise: 6:00PM

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Tide Times for Castle Island, Boston Harbor: Saturday 27 June 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 4:23 AM(Sat 27 June)0.81 ft (0.25 m)
High Tide10:33 AM(Sat 27 June)8.34 ft (2.54 m)
Low Tide 4:20 PM(Sat 27 June)1.79 ft (0.55 m)
High Tide10:36 PM(Sat 27 June)9.78 ft (2.98 m)
tide stateSunrise: 5:09AMtide stateSunset: 8:24PMtide stateMoonset: 2:47AMtide stateMoonrise: 7:00PM

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Tide Times for Castle Island, Boston Harbor: Sunday 28 June 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 5:07 AM(Sun 28 June)0.69 ft (0.21 m)
High Tide11:18 AM(Sun 28 June)8.4 ft (2.56 m)
Low Tide 5:04 PM(Sun 28 June)1.73 ft (0.53 m)
High Tide11:18 PM(Sun 28 June)9.87 ft (3.01 m)
tide stateSunrise: 5:09AMtide stateSunset: 8:24PMtide stateMoonset: 3:30AMtide stateMoonrise: 7:55PM

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Tide Times for Castle Island, Boston Harbor: Monday 29 June 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 5:47 AM(Mon 29 June)0.57 ft (0.17 m)
High Tide12:00 PM(Mon 29 June)8.48 ft (2.59 m)
Low Tide 5:46 PM(Mon 29 June)1.64 ft (0.5 m)
High Tide11:59 PM(Mon 29 June)9.96 ft (3.04 m)
tide stateSunrise: 5:10AMtide stateSunset: 8:24PMtide stateMoonset: 4:20AMtide stateMoonrise: 8:42PM

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Tide Times for Castle Island, Boston Harbor: Tuesday 30 June 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 6:27 AM(Tue 30 June)0.47 ft (0.14 m)
High Tide12:39 PM(Tue 30 June)8.58 ft (2.62 m)
Low Tide 6:27 PM(Tue 30 June)1.54 ft (0.47 m)
tide stateSunrise: 5:10AMtide stateSunset: 8:24PMtide stateMoonset: 5:18AMtide stateMoonrise: 9:21PM

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Tide Times for Castle Island, Boston Harbor: Wednesday 01 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide00:39 AM(Wed 01 July)10.01 ft (3.05 m)
Low Tide 7:05 AM(Wed 01 July)0.39 ft (0.12 m)
High Tide 1:18 PM(Wed 01 July)8.67 ft (2.64 m)
Low Tide 7:08 PM(Wed 01 July)1.46 ft (0.44 m)
tide stateSunrise: 5:11AMtide stateSunset: 8:24PMtide stateMoonset: 6:21AMtide stateMoonrise: 9:53PM

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Tide Times for Castle Island, Boston Harbor: Thursday 02 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 1:18 AM(Thu 02 July)10.02 ft (3.05 m)
Low Tide 7:43 AM(Thu 02 July)0.33 ft (0.1 m)
High Tide 1:56 PM(Thu 02 July)8.78 ft (2.68 m)
Low Tide 7:49 PM(Thu 02 July)1.4 ft (0.43 m)
tide stateSunrise: 5:11AMtide stateSunset: 8:24PMtide stateMoonset: 7:27AMtide stateMoonrise:10:20PM

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Tide Times for Castle Island, Boston Harbor: Friday 03 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 1:58 AM(Fri 03 July)9.97 ft (3.04 m)
Low Tide 8:22 AM(Fri 03 July)0.31 ft (0.09 m)
High Tide 2:35 PM(Fri 03 July)8.91 ft (2.72 m)
Low Tide 8:31 PM(Fri 03 July)1.34 ft (0.41 m)
tide stateSunrise: 5:12AMtide stateSunset: 8:24PMtide stateMoonset: 8:32AMtide stateMoonrise:10:43PM

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Tide Times for Castle Island, Boston Harbor: Saturday 04 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 2:38 AM(Sat 04 July)9.87 ft (3.01 m)
Low Tide 9:01 AM(Sat 04 July)0.32 ft (0.1 m)
High Tide 3:14 PM(Sat 04 July)9.06 ft (2.76 m)
Low Tide 9:15 PM(Sat 04 July)1.28 ft (0.39 m)
tide stateSunrise: 5:12AMtide stateSunset: 8:23PMtide stateMoonset: 9:38AMtide stateMoonrise:11:04PM

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Tide Times for Castle Island, Boston Harbor: Sunday 05 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 3:20 AM(Sun 05 July)9.72 ft (2.96 m)
Low Tide 9:42 AM(Sun 05 July)0.38 ft (0.12 m)
High Tide 3:54 PM(Sun 05 July)9.26 ft (2.82 m)
Low Tide10:01 PM(Sun 05 July)1.18 ft (0.36 m)
tide stateSunrise: 5:13AMtide stateSunset: 8:23PMtide stateMoonset:10:44AMtide stateMoonrise:11:24PM

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Tide Times for Castle Island, Boston Harbor: Monday 06 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 4:06 AM(Mon 06 July)9.53 ft (2.9 m)
Low Tide10:25 AM(Mon 06 July)0.48 ft (0.15 m)
High Tide 4:38 PM(Mon 06 July)9.49 ft (2.89 m)
Low Tide10:50 PM(Mon 06 July)1.05 ft (0.32 m)
tide stateSunrise: 5:13AMtide stateSunset: 8:23PMtide stateMoonset:11:51AMtide stateMoonrise:11:44PM

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Tide Times for Castle Island, Boston Harbor: Tuesday 07 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 4:55 AM(Tue 07 July)9.32 ft (2.84 m)
Low Tide11:11 AM(Tue 07 July)0.61 ft (0.19 m)
High Tide 5:24 PM(Tue 07 July)9.76 ft (2.97 m)
Low Tide11:43 PM(Tue 07 July)0.87 ft (0.27 m)
tide stateSunrise: 5:14AMtide stateSunset: 8:23PMtide stateMoonset: 1:00PM

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Tide Times for Castle Island, Boston Harbor: Wednesday 08 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 5:48 AM(Wed 08 July)9.12 ft (2.78 m)
Low Tide12:01 PM(Wed 08 July)0.74 ft (0.23 m)
High Tide 6:14 PM(Wed 08 July)10.05 ft (3.06 m)
tide stateSunrise: 5:15AMtide stateSunset: 8:22PMtide stateMoonrise:00:06AMtide stateMoonset: 2:13PM

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Tide Times for Castle Island, Boston Harbor: Thursday 09 July 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide00:40 AM(Thu 09 July)0.61 ft (0.19 m)
High Tide 6:45 AM(Thu 09 July)8.99 ft (2.74 m)
Low Tide12:55 PM(Thu 09 July)0.82 ft (0.25 m)
High Tide 7:08 PM(Thu 09 July)10.37 ft (3.16 m)
tide stateSunrise: 5:15AMtide stateSunset: 8:22PMtide stateMoonrise:00:32AMtide stateMoonset: 3:30PM

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Tide Times for Castle Island, Boston Harbor: Friday 10 July 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 1:40 AM(Fri 10 July)0.29 ft (0.09 m)
High Tide 7:46 AM(Fri 10 July)8.95 ft (2.73 m)
Low Tide 1:52 PM(Fri 10 July)0.81 ft (0.25 m)
High Tide 8:04 PM(Fri 10 July)10.71 ft (3.26 m)
tide stateSunrise: 5:16AMtide stateSunset: 8:21PMtide stateMoonrise: 1:05AMtide stateMoonset: 4:49PM

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Tide Times for Castle Island, Boston Harbor: Saturday 11 July 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 2:40 AM(Sat 11 July)-0.1 ft (-0.03 m)
High Tide 8:47 AM(Sat 11 July)9.03 ft (2.75 m)
Low Tide 2:50 PM(Sat 11 July)0.69 ft (0.21 m)
High Tide 9:03 PM(Sat 11 July)11.07 ft (3.37 m)
tide stateSunrise: 5:17AMtide stateSunset: 8:21PMtide stateMoonrise: 1:48AMtide stateMoonset: 6:06PM

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Tide Times for Castle Island, Boston Harbor: Sunday 12 July 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 3:40 AM(Sun 12 July)-0.52 ft (-0.16 m)
High Tide 9:48 AM(Sun 12 July)9.23 ft (2.81 m)
Low Tide 3:49 PM(Sun 12 July)0.46 ft (0.14 m)
High Tide10:02 PM(Sun 12 July)11.41 ft (3.48 m)
tide stateSunrise: 5:18AMtide stateSunset: 8:20PMtide stateMoonrise: 2:43AMtide stateMoonset: 7:16PM

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Tide Times for Castle Island, Boston Harbor: Monday 13 July 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 4:38 AM(Mon 13 July)-0.92 ft (-0.28 m)
High Tide10:48 AM(Mon 13 July)9.5 ft (2.9 m)
Low Tide 4:47 PM(Mon 13 July)0.19 ft (0.06 m)
High Tide11:00 PM(Mon 13 July)11.68 ft (3.56 m)
tide stateSunrise: 5:18AMtide stateSunset: 8:20PMtide stateMoonrise: 3:52AMtide stateMoonset: 8:12PM

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Tide Times for Castle Island, Boston Harbor: Tuesday 14 July 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 5:34 AM(Tue 14 July)-1.23 ft (-0.37 m)
High Tide11:45 AM(Tue 14 July)9.79 ft (2.98 m)
Low Tide 5:43 PM(Tue 14 July)-0.07 ft (-0.02 m)
High Tide11:56 PM(Tue 14 July)11.81 ft (3.6 m)
tide stateSunrise: 5:19AMtide stateSunset: 8:19PMtide stateMoonrise: 5:12AMtide stateMoonset: 8:56PM

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Tide Times for Castle Island, Boston Harbor: Wednesday 15 July 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide 6:27 AM(Wed 15 July)-1.39 ft (-0.42 m)
High Tide12:40 PM(Wed 15 July)10.05 ft (3.06 m)
Low Tide 6:38 PM(Wed 15 July)-0.23 ft (-0.07 m)
tide stateSunrise: 5:20AMtide stateSunset: 8:18PMtide stateMoonrise: 6:34AMtide stateMoonset: 9:29PM

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Tide Times for Castle Island, Boston Harbor: Thursday 16 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide00:51 AM(Thu 16 July)11.76 ft (3.58 m)
Low Tide 7:19 AM(Thu 16 July)-1.37 ft (-0.42 m)
High Tide 1:33 PM(Thu 16 July)10.24 ft (3.12 m)
Low Tide 7:32 PM(Thu 16 July)-0.26 ft (-0.08 m)
tide stateSunrise: 5:21AMtide stateSunset: 8:18PMtide stateMoonrise: 7:54AMtide stateMoonset: 9:56PM

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Tide Times for Castle Island, Boston Harbor: Friday 17 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 1:45 AM(Fri 17 July)11.5 ft (3.51 m)
Low Tide 8:09 AM(Fri 17 July)-1.16 ft (-0.35 m)
High Tide 2:24 PM(Fri 17 July)10.31 ft (3.14 m)
Low Tide 8:25 PM(Fri 17 July)-0.15 ft (-0.05 m)
tide stateSunrise: 5:22AMtide stateSunset: 8:17PMtide stateMoonrise: 9:09AMtide stateMoonset:10:19PM

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Tide Times for Castle Island, Boston Harbor: Saturday 18 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 2:39 AM(Sat 18 July)11.04 ft (3.36 m)
Low Tide 8:58 AM(Sat 18 July)-0.76 ft (-0.23 m)
High Tide 3:15 PM(Sat 18 July)10.27 ft (3.13 m)
Low Tide 9:19 PM(Sat 18 July)0.09 ft (0.03 m)
tide stateSunrise: 5:23AMtide stateSunset: 8:16PMtide stateMoonrise:10:21AMtide stateMoonset:10:40PM

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Tide Times for Castle Island, Boston Harbor: Sunday 19 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 3:31 AM(Sun 19 July)10.44 ft (3.18 m)
Low Tide 9:47 AM(Sun 19 July)-0.24 ft (-0.07 m)
High Tide 4:05 PM(Sun 19 July)10.13 ft (3.09 m)
Low Tide10:13 PM(Sun 19 July)0.42 ft (0.13 m)
tide stateSunrise: 5:24AMtide stateSunset: 8:16PMtide stateMoonrise:11:29AMtide stateMoonset:11:01PM

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Tide Times for Castle Island, Boston Harbor: Monday 20 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 4:25 AM(Mon 20 July)9.78 ft (2.98 m)
Low Tide10:36 AM(Mon 20 July)0.37 ft (0.11 m)
High Tide 4:55 PM(Mon 20 July)9.91 ft (3.02 m)
Low Tide11:09 PM(Mon 20 July)0.77 ft (0.23 m)
tide stateSunrise: 5:25AMtide stateSunset: 8:15PMtide stateMoonrise:12:36PMtide stateMoonset:11:22PM

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Tide Times for Castle Island, Boston Harbor: Tuesday 21 July 2026

Tidetide stateTime (EDT)& DateHeight
High Tide 5:21 AM(Tue 21 July)9.13 ft (2.78 m)
Low Tide11:27 AM(Tue 21 July)0.97 ft (0.3 m)
High Tide 5:47 PM(Tue 21 July)9.66 ft (2.94 m)
tide stateSunrise: 5:26AMtide stateSunset: 8:14PMtide stateMoonrise: 1:42PMtide stateMoonset:11:46PM

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Tide Times for Castle Island, Boston Harbor: Wednesday 22 July 2026

Tidetide stateTime (EDT)& DateHeight
Low Tide00:07 AM(Wed 22 July)1.07 ft (0.33 m)
High Tide 6:18 AM(Wed 22 July)8.58 ft (2.62 m)
Low Tide12:19 PM(Wed 22 July)1.49 ft (0.45 m)
High Tide 6:40 PM(Wed 22 July)9.45 ft (2.88 m)
tide stateSunrise: 5:26AMtide stateSunset: 8:13PMtide stateMoonrise: 2:47PM

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