Castle Island 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 04:04 PM.
Days 1–4 Weather SummaryA light covering of new snow, mostly falling on Sun night. Air temperatures will be below freezing (max -5°C on Sun night, min -14°C on Wed morning). Mainly near gales. | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Sat morning. Icy conditions (max 1°C on Sat morning, min -14°C on Wed night). Winds increasing (light winds from the WSW on Fri afternoon, near gales from the ESE by Sat morning). | Days 8–10 Weather SummaryA moderate fall of snow, heaviest on Mon afternoon. Freeze-thaw conditions (max 1°C on Sat afternoon, min -12°C on Sun afternoon). Winds decreasing (severe gales from the SE on Mon afternoon, light winds from the SW by Tue morning). | Days 11–13 Weather SummaryA moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 1°C on Wed night, min -9°C on Wed morning). Mainly near gales. | |||||||||||||||||||||||||||||||||
Sun 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 31 | Thursday 1 | Fri 2 | ||||||||||||||||||||||||
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 | 8:39PM0.77m | 8:42AM1.21m | 9:20PM0.78m | 9:16AM1.21m | 10:04PM0.79m | 9:52AM1.19m | 10:52PM0.81m | 10:34AM1.14m | 11:43PM0.83m | 11:21AM1.08m | 00:40AM0.86m | 12:17PM1.00m | 1:46AM0.90m | 1:23PM0.93m | 2:58AM0.95m | 2:42PM0.87m | 4:06AM1.02m | 4:01PM0.84m | 5:03AM1.11m | 5:08PM0.84m | 5:54AM1.22m | 6:06PM0.84m | 6:40AM1.30m | |||||||||||||
Low Tide | 2:53PM0.22m | 2:08AM0.19m | 3:27PM0.22m | 2:43AM0.23m | 4:01PM0.24m | 3:19AM0.28m | 4:35PM0.27m | 3:57AM0.35m | 5:10PM0.30m | 4:40AM0.44m | 5:48PM0.35m | 5:32AM0.52m | 6:33PM0.38m | 6:53AM0.58m | 7:36PM0.41m | 9:41AM0.54m | 9:03PM0.40m | 10:49AM0.44m | 10:12PM0.36m | 11:42AM0.33m | 11:06PM0.30m | 12:33PM0.23m | 11:55PM0.22m | |||||||||||||
SE 10 | NE 5 | ENE 7 | SE 10 | SE 10 | SE 9 | NE 7 | NNE 6 | ENE 9 | ENE 10 | E 10 | E 9 | E 12 | E 11 | ESE 12 | ESE 12 | ESE 12 | ESE 11 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | SE 6 | ESE 10 | ESE 12 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | E 10 | ESE 8 | ESE 11 | ESE 11 | ESE 11 | E 10 | |
 |  |  | |  | |  | | | | |  | |  | | |  |  | | | | | | | | | | | | | |  |  | |  | | |
light snow | mod snow | some clouds | some clouds | some clouds | some clouds | clear | some clouds | clear | clear | some clouds | cloudy | some clouds | clear | clear | clear | light snow | mod snow | some clouds | light snow | some clouds | some clouds | some clouds | light snow | mod snow | light snow | some clouds | some clouds | some clouds | some clouds | clear | heavy snow | snow shwrs | cloudy | snow shwrs | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -9 | -5 | -10 | -10 | -12 | -11 | -10 | -11 | -13 | -12 | -12 | -9 | -9 | -11 | -10 | -8 | -3 | 1 | 1 | -4 | -11 | -11 | -7 | -2 | 1 | 1 | -2 | -3 | -5 | -8 | -7 | 1 | 1 | -3 | -6 | -6 |
Moonrise | — | — | 10:32 | — | — | 10:52 | — | — | 11:08 | — | — | 11:20 | — | — | 11:32 | — | — | 11:43 | — | — | 11:55 | — | — | 12:09 | — | — | 12:29 | — | — | 12:59 | — | — | 1:43 | — | — | 2:48 |
Moonset | 5:06 | — | — | 6:22 | — | — | 7:40 | — | — | 8:59 | — | — | — | 10:18 | — | — | 11:38 | — | — | — | 12:59 | — | — | 2:24 | — | — | 3:55 | — | — | 5:28 | — | — | 6:57 | — | — | 8:12 |
 | — | — | 8:18 | — | — | 8:18 | — | — | 8:19 | — | — | 8:19 | — | — | 8:19 | — | — | 8:21 | — | — | 8:21 | — | — | 8:21 | — | — | 8:21 | — | — | 8:21 | — | — | 8:21 | — | — | 8:21 |
 | 4:04 | — | — | 4:04 | — | — | 4:05 | — | — | 4:05 | — | — | 4:06 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:08 | — | — | 4:09 | — | — | 4:10 | — | — | 4:12 | — | — |
Today's sea temperature in Castle Island is 0.8° C (Statistics for 21 Dec 1981-2005 – mean: -0.1 max: 0.6 min: -0.9°C) | ||||||||||||||||||||||||||||||||||||
Nearest