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 07:15 AM and sunset is at 04:29 PM.
Days 1–3 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 increasing (light winds from the WSW on Wed night, fresh winds from the ENE by Fri night). | Days 4–6 Weather SummaryModerate rain (total 11mm), heaviest on Sun night. Icy conditions (max 7°C on Mon morning, min -4°C on Sat night). Winds increasing (light winds from the SSW on Sun night, strong winds from the WNW by Mon night). | Days 7–9 Weather SummaryMostly dry. Freeze-thaw conditions (max 5°C on Thu night, min -6°C on Fri afternoon). Mainly fresh winds. | Days 10–12 Weather SummaryLight rain (total 5mm), mostly falling on Sun night. Freeze-thaw conditions (max 7°C on Mon afternoon, min -8°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||||||||||
Thursday 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 31 | Thursday 1 | Friday 2 | Saturday 3 | Sunday 4 | Mon 5 | ||||||||||||||||||||||||
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 | 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 | |||||||||||||
Low Tide | 8:28AM0.18m | 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 | ||||||||||||
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 |  |  |  |  |  | | |  | | |  |  |  | | | | | | | | | |  | | | | | | | | |  | | | |
cloudy | clear | some clouds | some clouds | light snow | heavy snow | light snow | clear | clear | clear | cloudy | mod rain | light rain | rain shwrs | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | clear | cloudy | cloudy | cloudy | some clouds | clear | clear | some clouds | clear | some clouds | some clouds | cloudy | light rain | clear | some clouds | |
km/h | |||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | 8 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | — | — | |
max°C | 5 | 6 | -3 | -4 | -2 | 0 | -2 | -1 | -2 | -1 | 0 | 6 | 7 | 7 | 1 | -1 | -1 | -2 | -1 | 0 | 2 | 4 | 4 | 5 | -3 | -5 | -7 | -3 | -2 | -4 | -3 | 2 | 5 | 4 | 7 |
Moonrise | 10:45 | — | — | 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 | — |
 | 7:15 | — | — | 7:15 | — | — | 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