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 06:48 AM and sunset is at 07:07 PM.
Days 1–3 Weather SummaryHeavy rain (total 20mm), heaviest during Mon afternoon. Cool air temperatures (max 11°C on Tue afternoon, min 1°C on Wed night). Winds decreasing (fresh winds from the SSE on Mon morning, calm by Tue night). | Days 4–6 Weather SummaryLight rain (total 5mm) at first, then becoming colder with a dusting of snow on Sat afternoon. Icy conditions (max 10°C on Fri afternoon, min 0°C on Thu morning). Winds increasing (light winds from the NW on Fri night, fresh winds from the E by Sat night). | Days 7–9 Weather SummaryLight rain (total 8mm), mostly falling on Mon afternoon. Freeze-thaw conditions (max 12°C on Mon afternoon, min -1°C on Tue night). Mainly fresh winds. | Days 10–12 Weather SummaryHeavy rain (total 23mm), heaviest during Fri afternoon. Freeze-thaw conditions (max 10°C on Thu afternoon, min -1°C on Wed morning). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||||||||||||
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 | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
High Tide | 7:26AM1.97m | 8:02PM1.88m | 8:25AM2.05m | 8:56PM2.01m | 9:20AM2.13m | 9:47PM2.15m | 10:11AM2.20m | 10:34PM2.27m | 11:01AM2.25m | 11:21PM2.37m | 11:49AM2.26m | 00:08AM2.43m | 12:38PM2.23m | 00:56AM2.43m | 1:28PM2.16m | 1:45AM2.39m | 2:20PM2.06m | 2:38AM2.30m | 3:16PM1.95m | 3:36AM2.18m | 4:18PM1.85m | 4:40AM2.06m | 5:25PM1.79m | |||||||||||||
Low Tide | 1:53PM0.25m | 2:14AM0.28m | 2:48PM0.14m | 3:10AM0.12m | 3:38PM0.02m | 4:02AM-0.06m | 4:26PM-0.11m | 4:52AM-0.22m | 5:12PM-0.20m | 5:41AM-0.35m | 5:58PM-0.25m | 6:30AM-0.41m | 6:45PM-0.25m | 7:19AM-0.41m | 7:33PM-0.19m | 8:11AM-0.33m | 8:25PM-0.08m | 9:07AM-0.21m | 9:21PM0.06m | 10:07AM-0.06m | 10:24PM0.20m | 11:13AM0.08m | 11:34PM0.29m | |||||||||||||
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 |  |  |  |  | | | |  | | |  | |  |  | |  |  | | | | | | | | | | | | | | | | | | | |
light rain | heavy rain | some clouds | clear | some clouds | some clouds | clear | some clouds | clear | clear | some clouds | rain shwrs | some clouds | cloudy | light rain | cloudy | light snow | light snow | cloudy | cloudy | light rain | light rain | light rain | light rain | cloudy | some clouds | clear | cloudy | cloudy | light rain | light rain | some clouds | some clouds | light rain | heavy rain | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
5 | 15 | — | — | — | — | — | — | — | — | — | 1.0 | — | — | 4 | — | — | — | — | — | 2.0 | 2.0 | 2.0 | 2.0 | — | — | — | — | — | 3 | 3 | — | — | 3 | 14 | — | |
max°C | 6 | 9 | 10 | 7 | 11 | 11 | 5 | 8 | 7 | 2 | 9 | 8 | 4 | 10 | 7 | 4 | 1 | 1 | 2 | 4 | 10 | 11 | 12 | 9 | 0 | 5 | 4 | 1 | 4 | 5 | 6 | 10 | 8 | 6 | 10 | 10 |
Moonrise | 4:18 | — | — | 4:54 | — | — | 5:24 | — | — | 5:51 | — | — | 6:15 | — | — | 6:40 | — | — | 7:05 | — | — | 7:35 | — | — | 8:10 | — | — | 8:54 | — | — | 9:47 | — | — | 10:50 | — | — |
Moonset | 1:27 | — | — | 2:41 | — | — | — | 3:57 | — | — | 5:14 | — | — | 6:31 | — | — | 7:50 | — | — | — | 9:11 | — | — | 10:33 | — | — | 11:54 | — | — | — | 1:08 | — | — | 2:12 | — | — |
 | 6:48 | — | — | 6:48 | — | — | 6:46 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — |
 | — | 7:07 | — | — | 7:08 | — | — | 7:09 | — | — | 7:10 | — | — | 7:12 | — | — | 7:13 | — | — | 7:14 | — | — | 7:15 | — | — | 7:15 | — | — | 7:16 | — | — | 7:17 | — | — | 7:19 | — |
Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 4.7 °C (Statistics for 24 Mar 1981-2005 – mean: 4.8 max: 6.5 min: 3.1°C) | ||||||||||||||||||||||||||||||||||||
Nearest