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 07:35 PM.
Days 1–4 Weather SummaryLight rain (total 4mm), mostly falling on Wed afternoon. Icy conditions (max 15°C on Wed afternoon, min -2°C on Wed night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Cool air temperatures (max 17°C on Sat afternoon, min 6°C on Fri night). Wind will be generally light. | Days 8–10 Weather SummaryLight rain (total 2mm), mostly falling on Tue night. Warm (max 23°C on Tue afternoon, min 9°C on Mon night). Wind will be generally light. | Days 11–13 Weather SummaryLight rain (total 2mm), mostly falling on Fri morning. Very mild (max 19°C on Fri morning, min 10°C on Sat night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 1 | Thursday 2 | Friday 3 | Saturday 4 | Sun 5 | |||||||||||||||||||||||||
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 | 00:07AM3.03m | 12:36PM2.82m | 00:41AM3.07m | 1:13PM2.79m | 1:17AM3.08m | 1:52PM2.75m | 1:55AM3.08m | 2:34PM2.69m | 2:36AM3.05m | 3:19PM2.64m | 3:23AM3.02m | 4:09PM2.59m | 4:15AM2.99m | 5:05PM2.59m | 5:14AM2.97m | 6:04PM2.64m | 6:17AM2.97m | 7:05PM2.76m | 7:21AM3.00m | 8:03PM2.94m | 8:25AM3.07m | 8:59PM3.14m | 9:25AM3.14m | |||||||||||||
Low Tide | 5:58PM0.28m | 6:25AM0.06m | 6:34PM0.30m | 7:03AM0.03m | 7:11PM0.32m | 7:42AM0.02m | 7:50PM0.36m | 8:23AM0.04m | 8:31PM0.41m | 9:08AM0.08m | 9:17PM0.46m | 9:57AM0.12m | 10:08PM0.50m | 10:51AM0.15m | 11:05PM0.52m | 11:49AM0.16m | 00:07AM0.47m | 12:49PM0.13m | 1:12AM0.36m | 1:48PM0.06m | 2:15AM0.18m | 2:45PM-0.02m | 3:15AM-0.03m | 3:38PM-0.10m | ||||||||||||
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 |  |  |  |  | | | | | | |  |  |  | | | | | | | |  | | | | | | | | | | | | | | | |
some clouds | light rain | rain shwrs | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | cloudy | cloudy | cloudy | some clouds | cloudy | some clouds | some clouds | some clouds | some clouds | rain shwrs | clear | clear | clear | clear | clear | clear | rain shwrs | light rain | clear | clear | clear | clear | some clouds | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
— | 1.0 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2.0 | — | — | — | — | — | — | 1.0 | 1.0 | — | — | — | — | — | — | |
max°C | 9 | 9 | 15 | 7 | 5 | 10 | 6 | 9 | 10 | 8 | 13 | 17 | 12 | 8 | 14 | 13 | 12 | 16 | 13 | 17 | 23 | 18 | 17 | 20 | 17 | 17 | 21 | 17 | 19 | 14 | 13 | 14 | 16 | 13 | 14 | 16 |
Moonrise | 7:34 | — | 8:40 | — | — | — | 9:49 | — | — | 10:57 | — | — | — | 12:02 | — | — | 12:59 | — | — | 1:47 | — | — | 2:25 | — | — | 2:56 | — | — | 3:23 | — | — | 3:47 | — | — | 4:09 | — |
Moonset | — | 5:53 | — | — | 6:19 | — | — | 6:51 | — | — | 7:32 | — | — | 8:23 | — | — | 9:26 | — | — | 10:37 | — | — | 11:53 | — | — | 1:10 | — | — | 2:27 | — | — | — | 3:45 | — | — | 5:02 |
 | — | 5:48 | — | — | 5:47 | — | — | 5:45 | — | — | 5:43 | — | — | 5:41 | — | — | 5:41 | — | — | 5:39 | — | — | 5:37 | — | — | 5:37 | — | — | 5:35 | — | — | 5:33 | — | — | 5:33 | — |
 | 7:35 | — | 7:36 | — | — | 7:37 | — | — | 7:37 | — | — | 7:38 | — | — | 7:39 | — | — | 7:42 | — | — | 7:43 | — | — | 7:44 | — | — | 7:45 | — | — | 7:45 | — | — | 7:46 | — | — | 7:47 |
Today's sea temperature in Castle Island, Boston Harbor is 8.2 °C (Statistics for 23 Apr 1981-2005 – mean: 6.5 max: 7.5 min: 5.3°C) | ||||||||||||||||||||||||||||||||||||
Nearest