Port Jefferson Harbor entrance, Long Island Sound 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 04:29 PM.
Days 1–4 Weather SummaryA moderate fall of snow, heaviest on Fri night. Icy conditions (max 6°C on Thu afternoon, min -6°C on Thu night). Winds decreasing (strong winds from the NNW on Thu afternoon, light winds from the NE by Fri morning). | Days 5–7 Weather SummaryModerate rain (total 12mm), heaviest on Sun night. Icy conditions (max 9°C on Mon morning, min -2°C on Mon night). Winds increasing (light winds from the SSW on Sun night, near gales from the W by Mon night). | Days 8–10 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 3°C on Fri night, min -6°C on Wed night). Mainly fresh winds. | Days 11–13 Weather SummaryDrizzle at first, then turning colder with dusting of snow on Mon night. Freeze-thaw conditions (max 6°C on Mon night, min -6°C on Sat night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Thu 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 31 | Thursday 1 | Friday 2 | Saturday 3 | Sunday 4 | Monday 5 | Tue 6 | ||||||||||||||||||||||||
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 | 2:34PM2.03m | 3:06AM2.02m | 3:25PM1.96m | 3:57AM2.04m | 4:20PM1.89m | 4:51AM2.07m | 5:20PM1.83m | 5:50AM2.12m | 6:23PM1.81m | 6:50AM2.17m | 7:26PM1.82m | 7:49AM2.23m | 8:27PM1.82m | 8:49AM2.25m | 9:27PM1.89m | 9:46AM2.30m | 10:24PM1.96m | 10:42AM2.33m | 11:17PM2.02m | 11:35AM2.32m | 00:09AM2.06m | 12:27PM2.27m | 00:59AM2.07m | |||||||||||||
Low Tide | 8:53PM0.06m | 9:20AM0.16m | 9:41PM0.07m | 10:16AM0.13m | 10:33PM0.08m | 11:17AM0.08m | 11:30PM0.08m | 12:19PM0.02m | 00:30AM0.07m | 1:21PM-0.06m | 1:30AM0.04m | 2:22PM-0.14m | 2:31AM0.04m | 3:21PM-0.18m | 3:30AM-0.02m | 4:17PM-0.24m | 4:28AM-0.07m | 5:10PM-0.27m | 5:22AM-0.11m | 6:01PM-0.27m | 6:16AM-0.12m | 6:50PM-0.24m | 7:09AM-0.09m | |||||||||||||
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 |  |  |  |  |  | | | | |  | |  |  | | | | | | | | |  | | | | | | | | | | | |  | | |
clear | clear | some clouds | light snow | mod snow | cloudy | clear | clear | cloudy | cloudy | heavy rain | cloudy | rain shwrs | some clouds | some clouds | clear | some clouds | cloudy | some clouds | some clouds | some clouds | some clouds | snow shwrs | some clouds | some clouds | clear | clear | clear | clear | clear | clear | some clouds | cloudy | some clouds | light snow | cloudy | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | 11 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | |
max°C | 6 | -4 | -4 | -3 | -1 | -2 | -1 | -2 | -2 | 1 | 5 | 9 | 8 | 3 | -2 | -2 | -1 | 1 | 2 | -2 | -4 | -2 | -2 | 2 | 2 | 3 | -3 | -3 | -4 | -4 | -2 | 2 | 3 | 4 | 6 | 1 |
Moonrise | — | — | 11:06 | — | — | 11:28 | — | — | 11:51 | — | — | 12:18 | — | — | 12:51 | — | — | 1:33 | — | — | 2:27 | — | — | — | 3:34 | — | — | 4:50 | — | — | 6:09 | — | — | 7:26 | — | — |
Moonset | — | 10:11 | — | — | 11:19 | — | — | — | 12:29 | — | — | 1:43 | — | — | 3:00 | — | — | 4:20 | — | — | 5:38 | — | — | 6:50 | — | — | 7:48 | — | — | 8:34 | — | — | 9:09 | — | — | 9:37 |
 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 |
 | 4:29 | — | — | 4:30 | — | — | 4:30 | — | — | 4:30 | — | — | 4:31 | — | — | 4:32 | — | — | 4:32 | — | — | 4:35 | — | — | 4:35 | — | — | 4:36 | — | — | 4:37 | — | — | 4:37 | — | — |
Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 5.8° C (Statistics for 25 Dec 1981-2005 – mean: 7.9 max: 10.4 min: 5.8°C) | ||||||||||||||||||||||||||||||||||||
Nearest