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 06:09 AM and sunset is at 05:40 PM.
Days 1–3 Weather SummaryMostly dry. Icy conditions (max 15°C on Mon morning, min 0°C on Fri night). Wind will be generally light. | Days 4–6 Weather SummaryLight rain (total 5mm), mostly falling on Thu afternoon. Warm air temperatures (max 21°C on Tue afternoon, min 7°C on Thu afternoon). Winds increasing (calm on Tue night, fresh winds from the SSW by Thu afternoon). | Days 7–9 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 12°C on Sat afternoon, min -3°C on Thu night). Wind will be generally light. | Days 10–12 Weather SummaryLight rain (total 3mm) at first, then becoming colder with a dusting of snow on Mon night. Freeze-thaw conditions (max 17°C on Mon morning, min -2°C on Tue night). Mainly strong winds. | |||||||||||||||||||||||||||||||||||||||||||
Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sun 22 | |||||||||||||||||||||||||||||||
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 | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||||||||
High Tide | 1:52PM2.87m | 2:06AM3.00m | 2:36PM2.71m | 3:49AM2.89m | 3:23PM2.55m | 3:36AM2.78m | 4:15PM2.40m | 4:28AM2.68m | 5:12PM2.30m | 5:25AM2.62m | 6:12PM2.27m | 6:25AM2.63m | 7:12PM2.31m | 7:23AM2.69m | 8:07PM2.42m | 8:17AM2.80m | 8:55PM2.57m | 9:05AM2.92m | 9:38PM2.76m | 9:50AM3.05m | 10:18PM2.94m | 10:33AM3.15m | 10:57PM3.12m | 11:16AM3.22m | 11:36PM3.28m | 12:00PM3.23m | 00:17AM3.38m | 12:45PM3.19m | ||||||||||||||||||
Low Tide | 7:42AM-0.01m | 7:56PM0.18m | 8:26AM0.11m | 8:38PM0.34m | 9:13AM0.25m | 9:24PM0.49m | 10:03AM0.38m | 10:13PM0.62m | 10:59AM0.48m | 11:08PM0.71m | 11:58AM0.53m | 00:07AM0.73m | 12:57PM0.51m | 1:06AM0.68m | 1:53PM0.42m | 2:01AM0.56m | 2:42PM0.29m | 2:52AM0.40m | 3:25PM0.14m | 3:39AM0.21m | 4:07PM-0.00m | 4:23AM0.02m | 4:47PM-0.12m | 5:07AM-0.16m | 5:28PM-0.19m | 5:51AM-0.29m | 6:10PM-0.21m | 6:37AM-0.37m | 6:53PM-0.17m | |||||||||||||||||
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cloudy | cloudy | cloudy | cloudy | some clouds | clear | clear | clear | clear | clear | clear | some clouds | light rain | cloudy | cloudy | cloudy | light rain | snow shwrs | clear | some clouds | cloudy | some clouds | some clouds | cloudy | cloudy | cloudy | light rain | some clouds | some clouds | light snow | some clouds | clear | some clouds | cloudy | cloudy | cloudy | some clouds | some clouds | some clouds | light rain | cloudy | rain shwrs | some clouds | some clouds | cloudy | cloudy | |
km/h | ||||||||||||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 4 | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | — | — | — | — | — | — | — | — | — | 1 | — | 8 | — | — | — | — | |
max°C | 3 | 5 | 9 | 11 | 10 | 8 | 15 | 15 | 10 | 20 | 21 | 14 | 12 | 15 | 14 | 16 | 15 | 5 | 4 | 7 | 8 | 11 | 12 | 7 | 1 | -1 | 4 | 17 | 17 | 14 | 3 | 4 | 0 | 2 | 2 | 0 | 6 | 5 | 4 | 10 | 13 | 9 | 3 | 4 | -2 | -2 |
Moonrise | — | — | 10:29 | — | — | — | 12:35 | — | — | 1:38 | — | — | 2:37 | — | — | 3:29 | — | — | 4:14 | — | — | 4:51 | — | — | 5:22 | — | — | 5:48 | — | — | 6:11 | — | — | 6:33 | — | — | 6:54 | — | — | 7:17 | — | — | 7:43 | — | — | 8:15 |
Moonset | 7:40 | — | — | 9:05 | — | — | 9:36 | — | — | 10:13 | — | — | 10:58 | — | — | 11:52 | — | — | 12:54 | — | — | 2:00 | — | — | — | 3:10 | — | — | 4:20 | — | — | 5:32 | — | — | 6:44 | — | — | 7:58 | — | — | — | 9:14 | — | — | 10:33 | — |
 | 6:09 | — | — | 7:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:01 | — | — | 6:01 | — | — | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:48 | — | — | 5:47 | — | — | 5:45 | — | — | 5:43 |
 | — | 5:40 | — | — | 6:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — |
Today's sea temperature in Castle Island, Boston Harbor is 1.7° C (Statistics for 07 Mar 1981-2005 – mean: 3.3 max: 4.6 min: 2.0°C) | ||||||||||||||||||||||||||||||||||||||||||||||
Nearest