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 — and sunset is at 04:14 PM.
Days 1–4 Weather SummaryLight rain (total 3mm), mostly falling on Tue morning. Cool air temperatures (max 11°C on Tue morning, min 1°C on Sun night). Wind will be generally light. | Days 5–7 Weather SummaryModerate rain (total 10mm), heaviest on Thu night. Low air temperatures (max 7°C on Wed afternoon, min 1°C on Fri night). Wind will be generally light. | Days 8–10 Weather SummaryMostly dry. Freeze-thaw conditions (max 5°C on Sat afternoon, min -4°C on Mon night). Wind will be generally light. | Days 11–13 Weather SummaryMostly dry. Freeze-thaw conditions (max 5°C on Fri morning, min -2°C on Tue afternoon). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Sun 24 | Monday 25 | Tuesday 26 | Wednesday 27 | Thursday 28 | Friday 29 | Saturday 30 | Sunday 1 | Monday 2 | Tuesday 3 | Wednesday 4 | Thursday 5 | Fri 6 | ||||||||||||||||||||||||
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 | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
High Tide | 6:12PM2.66m | 6:49AM2.69m | 7:08PM2.63m | 7:37AM2.76m | 8:00PM2.63m | 8:20AM2.85m | 8:48PM2.65m | 9:00AM2.93m | 9:31PM2.66m | 9:39AM2.99m | 10:13PM2.67m | 10:17AM3.04m | 10:53PM2.67m | 10:55AM3.08m | 11:33PM2.67m | 11:33AM3.09m | 00:14AM2.66m | 12:13PM3.10m | 00:56AM2.65m | 12:56PM3.09m | 1:40AM2.64m | 1:43PM3.06m | 2:28AM2.66m | |||||||||||||
Low Tide | 00:29AM0.42m | 12:58PM0.53m | 1:19AM0.44m | 1:51PM0.43m | 2:04AM0.45m | 2:38PM0.33m | 2:46AM0.44m | 3:22PM0.23m | 3:27AM0.42m | 4:02PM0.15m | 4:07AM0.41m | 4:42PM0.09m | 4:46AM0.41m | 5:22PM0.05m | 5:26AM0.40m | 6:02PM0.03m | 6:07AM0.41m | 6:44PM0.02m | 6:50AM0.42m | 7:29PM0.02m | 7:36AM0.43m | 8:15PM0.03m | 8:27AM0.43m | |||||||||||||
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 |  | | |  |  |  | | | |  |  | |  | | | | | | | | | | | | | | | | | | | | | | | |
clear | clear | clear | clear | some clouds | light rain | some clouds | clear | some clouds | some clouds | cloudy | cloudy | light rain | mod rain | light rain | some clouds | clear | clear | clear | some clouds | some clouds | clear | some clouds | some clouds | some clouds | some clouds | clear | clear | some clouds | some clouds | clear | clear | some clouds | some clouds | clear | cloudy | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | 3 | — | — | — | — | — | — | 2.0 | 7 | 1.0 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 8 | 4 | 9 | 9 | 6 | 11 | 8 | 6 | 7 | 7 | 5 | 6 | 6 | 6 | 5 | 7 | 3 | 5 | 5 | 2 | 5 | 4 | 0 | 3 | 3 | -1 | 0 | 0 | 0 | 2 | 1 | -1 | 3 | 3 | 0 | 5 |
Moonrise | 12:10 | — | 1:11 | — | — | 2:12 | — | — | 3:13 | — | — | 4:16 | — | — | 5:21 | — | — | 6:28 | — | — | 7:34 | — | — | 8:36 | — | — | 9:31 | — | — | 10:17 | — | — | 10:54 | — | — | 11:24 |
Moonset | 1:14 | — | 1:31 | — | — | 1:48 | — | — | 2:07 | — | — | 2:29 | — | — | 2:54 | — | — | — | 3:26 | — | — | 4:07 | — | — | 4:58 | — | — | 5:58 | — | — | 7:07 | — | — | 8:20 | — | 9:34 |
 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 |
 | 4:14 | — | — | 4:14 | — | — | 4:13 | — | — | 4:13 | — | — | 4:13 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — |
Today's sea temperature in Castle Island, Boston Harbor is 9.8 °C (Statistics for 24 Nov 1981-2005 – mean: 9.8 max: 11.1 min: 8.2°C) | ||||||||||||||||||||||||||||||||||||
Forecast update inUpdates in hr min sUpdate imminent
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