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 05:41 AM and sunset is at 07:39 PM.
Days 1–3 Weather SummaryLight rain (total 3mm), mostly falling on Wed night. Cool air temperatures (max 13°C on Fri morning, min 5°C on Fri night). Wind will be generally light. | Days 4–6 Weather SummarySome drizzle, heaviest during Sat night. Cool air temperatures (max 18°C on Mon afternoon, min 5°C on Sat night). Wind will be generally light. | Days 7–9 Weather SummaryLight rain (total 6mm), mostly falling on Tue night. Very mild (max 16°C on Tue afternoon, min 9°C on Tue night). Wind will be generally light. | Days 10–12 Weather SummaryLight rain (total 2mm), mostly falling on Sat afternoon. Very mild (max 17°C on Fri afternoon, min 6°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 1 | Saturday 2 | Sunday 3 | Monday 4 | Tuesday 5 | Wednesday 6 | Thursday 7 | Friday 8 | Saturday 9 | Sunday 10 | Monday 11 | Tuesday 12 | Wednesday 13 | Thu 14 | ||||||||||||||||||||||||||||||||
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 | 10:38AM2.90m | 10:54PM3.09m | 11:23AM2.89m | 11:33PM3.13m | 12:04PM2.86m | 00:10AM3.13m | 12:43PM2.82m | 00:46AM3.12m | 1:22PM2.77m | 1:24AM3.08m | 2:01PM2.70m | 2:03AM3.02m | 2:42PM2.63m | 2:45AM2.95m | 3:26PM2.56m | 3:29AM2.87m | 4:13PM2.51m | 4:17AM2.80m | 5:02PM2.48m | 5:09AM2.75m | 5:53PM2.51m | 6:03AM2.72m | 6:44PM2.60m | 6:58AM2.74m | 7:35PM2.74m | 7:54AM2.79m | 8:24PM2.91m | 8:48AM2.87m | |||||||||||||||||||
Low Tide | 4:40PM0.20m | 5:11AM0.04m | 5:21PM0.23m | 5:52AM-0.01m | 5:59PM0.27m | 6:31AM-0.01m | 6:37PM0.31m | 7:10AM0.01m | 7:16PM0.37m | 7:49AM0.06m | 7:55PM0.43m | 8:30AM0.14m | 8:37PM0.50m | 9:13AM0.22m | 9:21PM0.57m | 9:58AM0.30m | 10:08PM0.63m | 10:46AM0.36m | 10:59PM0.66m | 11:36AM0.39m | 11:53PM0.65m | 12:28PM0.38m | 00:50AM0.57m | 1:19PM0.34m | 1:46AM0.43m | 2:11PM0.27m | 2:41AM0.24m | 3:01PM0.18m | |||||||||||||||||||
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 | |  |  |  |  | | |  | | |  |  | | | | | | | | | | | | | | | | | | | | | | | | | | | | |  | | | | | | |
some clouds | some clouds | light rain | light rain | cloudy | some clouds | some clouds | some clouds | clear | some clouds | cloudy | rain shwrs | clear | cloudy | clear | clear | some clouds | clear | cloudy | cloudy | rain shwrs | cloudy | clear | some clouds | light rain | light rain | rain shwrs | clear | clear | clear | some clouds | light rain | rain shwrs | some clouds | some clouds | clear | some clouds | some clouds | clear | some clouds | some clouds | cloudy | clear | clear | clear | clear | clear | |
km/h | |||||||||||||||||||||||||||||||||||||||||||||||
— | — | 1 | 2 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 2 | — | — | — | 1 | 1 | 2 | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 8 | 10 | 9 | 11 | 12 | 11 | 13 | 12 | 11 | 12 | 13 | 11 | 11 | 13 | 10 | 15 | 18 | 13 | 15 | 16 | 14 | 12 | 16 | 12 | 13 | 15 | 15 | 15 | 17 | 14 | 14 | 16 | 11 | 13 | 15 | 12 | 14 | 15 | 13 | 9 | 9 | 7 | 10 | 12 | 12 | 17 | 19 |
Moonrise | — | 5:58 | — | — | 7:03 | — | — | 8:08 | — | — | — | 9:13 | — | — | 10:15 | — | — | 11:13 | — | — | — | 12:03 | — | — | 12:45 | — | — | 1:19 | — | — | 1:48 | — | — | 2:13 | — | — | 2:35 | — | — | 2:56 | — | — | 3:17 | — | — | 3:41 | — |
Moonset | 4:27 | — | — | 4:47 | — | — | 5:10 | — | — | 5:37 | — | — | 6:09 | — | — | 6:49 | — | — | 7:36 | — | — | 8:32 | — | — | 9:33 | — | — | 10:37 | — | — | 11:44 | — | — | 12:51 | — | — | 1:59 | — | — | — | 3:10 | — | — | 4:22 | — | — | 5:39 |
 | 5:41 | — | — | 5:41 | — | — | 5:39 | — | — | 5:37 | — | — | 5:37 | — | — | 5:35 | — | — | 5:33 | — | — | 5:33 | — | — | 5:31 | — | — | 5:31 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — | 5:26 | — | — | 5:24 | — | — | 5:24 | — |
 | — | 7:39 | — | — | 7:42 | — | — | 7:43 | — | — | 7:44 | — | — | 7:45 | — | — | 7:45 | — | — | 7:46 | — | — | 7:47 | — | — | 7:49 | — | — | 7:50 | — | — | 7:51 | — | — | 7:52 | — | — | 7:53 | — | — | 7:54 | — | — | 7:55 | — | — | 7:57 |
Today's sea temperature in Castle Island, Boston Harbor is 8.9° C (Statistics for 29 Apr 1981-2005 – mean: 7.2 max: 8.8 min: 5.3°C) | |||||||||||||||||||||||||||||||||||||||||||||||
Nearest