Castle Island, Boston Harbor Sea Conditions table showing wave height, swell direction and period.
High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at 05:05 AM and sunset is at 08:21 PM.
Days 1–3 Weather SummaryModerate rain (total 10mm), heaviest on Sun night. Very warm air temperatures (max 31°C on Sun afternoon, min 15°C on Mon night). Wind will be generally light. | Days 4–6 Weather SummarySome drizzle, heaviest during Thu afternoon. Warm air temperatures (max 26°C on Tue afternoon, min 14°C on Tue night). Wind will be generally light. | Days 7–9 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 26°C on Fri afternoon, min 13°C on Sat night). Wind will be generally light. | Days 10–12 Weather SummaryHeavy rain (total 47mm), heaviest during Mon night. Warm (max 24°C on Wed afternoon, min 14°C on Mon afternoon). Wind will be generally light. | Days 13–16 Weather SummaryLight rain (total 5mm), mostly falling on Fri night. Warm (max 30°C on Sat afternoon, min 17°C on Thu night). Wind will be generally light. | |||||||||||||||||||||||||||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | Sun 28 | ||||||||||||||||||||||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||||||||||
High Tide | 10:08AM2.92m | 10:21PM3.53m | 11:04AM2.98m | 11:15PM3.62m | 12:00PM3.03m | 00:09AM3.66m | 12:55PM3.06m | 1:05AM3.64m | 1:50PM3.07m | 2:01AM3.56m | 2:46PM3.06m | 2:57AM3.42m | 3:42PM3.04m | 3:55AM3.25m | 4:37PM3.01m | 4:53AM3.06m | 5:33PM2.98m | 5:53AM2.87m | 6:28PM2.95m | 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 | |||||||||||||||||||
Low Tide | 4:10PM0.08m | 4:55AM-0.35m | 5:05PM0.02m | 5:49AM-0.45m | 5:58PM-0.03m | 6:43AM-0.49m | 6:53PM-0.04m | 7:37AM-0.47m | 7:48PM-0.02m | 8:30AM-0.39m | 8:44PM0.04m | 9:23AM-0.27m | 9:41PM0.12m | 10:17AM-0.12m | 10:40PM0.21m | 11:11AM0.05m | 11:40PM0.28m | 12:06PM0.21m | 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 | |||||||||||||||||||
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clear | clear | clear | clear | cloudy | mod rain | clear | some clouds | clear | clear | some clouds | clear | some clouds | some clouds | cloudy | cloudy | rain shwrs | clear | cloudy | cloudy | risk tstorm | clear | clear | clear | clear | clear | some clouds | cloudy | heavy rain | heavy rain | cloudy | clear | rain shwrs | clear | some clouds | clear | clear | cloudy | some clouds | cloudy | light rain | light rain | some clouds | some clouds | some clouds | clear | clear | |
km/h | |||||||||||||||||||||||||||||||||||||||||||||||
— | — | — | — | — | 10 | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 3 | — | — | — | — | — | — | — | 15 | 31 | — | — | 1 | — | — | — | — | — | — | — | 1 | 4 | — | — | — | — | — | |
max °C | 27 | 30 | 26 | 29 | 31 | 25 | 23 | 26 | 21 | 23 | 26 | 21 | 23 | 26 | 20 | 23 | 22 | 25 | 21 | 26 | 20 | 24 | 26 | 17 | 20 | 24 | 22 | 17 | 14 | 16 | 15 | 20 | 17 | 21 | 24 | 21 | 23 | 25 | 22 | 24 | 25 | 20 | 26 | 30 | 25 | 26 | 29 |
Moonrise | 3:12 | — | — | 4:02 | — | — | 5:05 | — | — | 6:21 | — | — | 7:42 | — | — | 9:02 | — | — | 10:17 | — | — | 11:29 | — | — | 12:37 | — | — | 1:42 | — | — | 2:47 | — | — | — | 3:52 | — | — | 4:57 | — | — | 6:00 | — | — | 7:00 | — | — | 7:55 |
Moonset | — | 7:15 | — | — | 8:31 | — | — | — | 9:35 | — | — | 10:24 | — | — | 11:02 | — | — | 11:32 | — | — | 11:56 | — | — | — | 12:17 | — | — | 12:37 | — | — | 12:57 | — | — | 1:19 | — | — | 1:43 | — | — | 2:12 | — | — | 2:47 | — | — | 3:30 | — |
 | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — |
 | — | 8:21 | — | — | 8:21 | — | — | 8:22 | — | — | 8:22 | — | — | 8:22 | — | — | 8:22 | — | — | 8:22 | — | — | 8:23 | — | — | 8:23 | — | — | 8:23 | — | — | 8:23 | — | — | 8:23 | — | — | 8:23 | — | — | 8:23 | — | — | 8:23 | — | — | 8:23 |
Today's sea temperature in Castle Island, Boston Harbor is 17.4° C (Statistics for 13 Jun 1981-2005 – mean: 14.5 max: 17.1 min: 12.6°C) | |||||||||||||||||||||||||||||||||||||||||||||||
Nearest