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 05:26 AM and sunset is at 08:14 PM.
Days 1–3 Weather SummaryMostly dry. Warm air temperatures (max 29°C on Wed afternoon, min 16°C on Wed night). Wind will be generally light. | Days 4–6 Weather SummaryLight rain (total 5mm), mostly falling on Mon night. Warm air temperatures (max 26°C on Sun afternoon, min 16°C on Sat night). Wind will be generally light. | Days 7–9 Weather SummaryHeavy rain (total 28mm), heaviest during Tue night. Warm (max 28°C on Wed afternoon, min 16°C on Thu night). Wind will be generally light. | Days 10–12 Weather SummaryLight rain (total 3mm), mostly falling on Fri afternoon. Warm (max 28°C on Sat afternoon, min 14°C on Fri night). Wind will be generally light. | Days 13–16 Weather SummaryLight rain (total 7mm), mostly falling on Thu night. Warm (max 31°C on Wed afternoon, min 18°C on Mon night). Wind will be generally light. | |||||||||||||||||||||||||||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thu 6 | ||||||||||||||||||||||||||||||||
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 | 6:18AM2.62m | 6:40PM2.88m | 7:17AM2.49m | 7:34PM2.84m | 8:16AM2.43m | 8:28PM2.83m | 9:13AM2.42m | 9:20PM2.86m | 10:04AM2.45m | 10:09PM2.91m | 10:51AM2.51m | 10:54PM2.97m | 11:33AM2.58m | 11:36PM3.03m | 12:13PM2.65m | 00:16AM3.07m | 12:50PM2.73m | 00:54AM3.09m | 1:26PM2.81m | 1:32AM3.09m | 2:02PM2.88m | 2:12AM3.07m | 2:40PM2.95m | 2:54AM3.02m | 3:20PM3.02m | 3:39AM2.94m | 4:03PM3.07m | 4:29AM2.85m | 4:51PM3.10m | ||||||||||||||||||
Low Tide | 12:19PM0.45m | 1:06AM0.39m | 1:13PM0.57m | 2:05AM0.41m | 2:08PM0.63m | 3:02AM0.40m | 3:01PM0.64m | 3:54AM0.35m | 3:51PM0.60m | 4:40AM0.29m | 4:37PM0.54m | 5:22AM0.22m | 5:21PM0.47m | 6:00AM0.15m | 6:03PM0.40m | 6:37AM0.09m | 6:43PM0.33m | 7:14AM0.04m | 7:24PM0.27m | 7:51AM0.02m | 8:05PM0.22m | 8:30AM0.02m | 8:48PM0.18m | 9:10AM0.05m | 9:34PM0.15m | 9:53AM0.10m | 10:23PM0.13m | 10:40AM0.18m | |||||||||||||||||||
Wave Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
 | |  |  | |  | | | | | | | | | | | |  |  | |  | | | | |  |  |  | | | | | | | | | | | | | | | | | | | | |
some clouds | some clouds | some clouds | clear | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | clear | some clouds | some clouds | some clouds | rain shwrs | risk tstorm | risk tstorm | risk tstorm | some clouds | clear | clear | some clouds | rain shwrs | mod rain | cloudy | rain shwrs | clear | clear | clear | some clouds | clear | cloudy | some clouds | clear | some clouds | some clouds | clear | some clouds | clear | some clouds | some clouds | some clouds | cloudy | some clouds | |
km/h | |||||||||||||||||||||||||||||||||||||||||||||||
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 1 | 4 | 13 | — | — | — | — | 1 | 9 | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 28 | 29 | 26 | 22 | 24 | 21 | 25 | 27 | 23 | 24 | 24 | 20 | 23 | 26 | 21 | 20 | 24 | 22 | 27 | 26 | 24 | 25 | 28 | 23 | 24 | 22 | 20 | 19 | 21 | 17 | 23 | 28 | 23 | 24 | 26 | 22 | 24 | 26 | 21 | 25 | 27 | 26 | 28 | 31 | 26 | 26 | 29 |
Moonrise | 2:47 | — | — | — | 3:52 | — | — | 4:53 | — | — | 5:50 | — | — | 6:40 | — | — | 7:21 | — | — | 7:56 | — | — | 8:24 | — | — | 8:48 | — | — | — | 9:10 | — | — | 9:30 | — | — | 9:50 | — | — | 10:11 | — | — | 10:35 | — | — | 11:04 | — | — |
Moonset | — | — | — | 12:13 | — | — | 12:46 | — | — | 1:26 | — | — | 2:14 | — | — | 3:10 | — | — | 4:12 | — | — | 5:17 | — | — | 6:24 | — | — | 7:30 | — | — | 8:37 | — | — | 9:43 | — | — | 10:51 | — | — | 12:02 | — | — | 1:16 | — | — | 2:32 | — |
 | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — |
 | — | 8:14 | — | — | 8:13 | — | — | 8:12 | — | — | 8:10 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 |
Today's sea temperature in Castle Island, Boston Harbor is 17.5° C (Statistics for 22 Jul 1981-2005 – mean: 19.9 max: 22.1 min: 17.4°C) | |||||||||||||||||||||||||||||||||||||||||||||||
Nearest