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 07:13 AM and sunset is at 04:51 PM.
Days 1–3 Weather SummaryA moderate fall of snow, heaviest on Sat afternoon. Icy conditions (max 4°C on Sat morning, min -8°C on Mon night). Winds increasing (light winds from the NNW on Sun morning, strong winds from the W by Mon afternoon). | Days 4–6 Weather SummaryA dusting of new snow. Icy conditions (max 5°C on Wed afternoon, min -8°C on Tue morning). Mainly strong winds. | Days 7–9 Weather SummaryA moderate fall of snow, heaviest on Sun morning. Freeze-thaw conditions (max 2°C on Fri night, min -18°C on Sun night). Winds increasing (light winds from the W on Sat afternoon, strong winds from the NNE by Sun morning). | Days 10–12 Weather SummaryA heavy fall of snow, heaviest during Thu morning. Temperatures will be below freezing (max -5°C on Thu morning, min -17°C on Mon morning). Winds decreasing (strong winds from the WNW on Mon afternoon, calm by Wed afternoon). | ||||||||||||||||||||||||||||||||||||||||||||
Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | Sun 1 | ||||||||||||||||||||||||||||||||
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 | 10:04AM2.12m | 10:33PM1.90m | 10:43AM2.16m | 11:10PM1.96m | 11:21AM2.18m | 11:47PM2.01m | 11:59AM2.18m | 00:24AM2.05m | 12:38PM2.15m | 1:03AM2.08m | 1:20PM2.09m | 1:45AM2.09m | 2:04PM2.01m | 2:30AM2.08m | 2:53PM1.91m | 3:21AM2.06m | 3:49PM1.80m | 4:18AM2.04m | 4:52PM1.71m | 5:22AM2.02m | 6:01PM1.67m | 6:29AM2.03m | 7:12PM1.69m | 7:37AM2.08m | 8:18PM1.76m | 8:41AM2.15m | 9:19PM1.87m | 9:39AM2.21m | |||||||||||||||||||
Low Tide | 4:29PM0.00m | 4:35AM0.13m | 5:06PM-0.04m | 5:14AM0.08m | 5:42PM-0.08m | 5:52AM0.03m | 6:19PM-0.10m | 6:32AM-0.01m | 6:56PM-0.10m | 7:13AM-0.03m | 7:34PM-0.09m | 7:58AM-0.03m | 8:16PM-0.05m | 8:48AM-0.01m | 9:03PM0.01m | 9:45AM0.02m | 9:57PM0.08m | 10:48AM0.06m | 10:59PM0.14m | 11:57AM0.07m | 00:08AM0.18m | 1:06PM0.04m | 1:18AM0.16m | 2:12PM-0.02m | 2:24AM0.09m | 3:11PM-0.11m | 3:25AM-0.01m | 4:06PM-0.18m | |||||||||||||||||||
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cloudy | light snow | some clouds | light snow | light snow | snow shwrs | some clouds | some clouds | some clouds | some clouds | cloudy | clear | some clouds | cloudy | some clouds | cloudy | light snow | clear | some clouds | cloudy | cloudy | light snow | cloudy | cloudy | mod snow | light snow | some clouds | clear | some clouds | clear | clear | clear | cloudy | cloudy | cloudy | heavy snow | heavy snow | some clouds | clear | some clouds | some clouds | some clouds | cloudy | clear | some clouds | some clouds | some clouds | |
km/h | |||||||||||||||||||||||||||||||||||||||||||||||
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max°C | 4 | 0 | 2 | 0 | 0 | 0 | -1 | 0 | -4 | -6 | -5 | -6 | 0 | 5 | 4 | 2 | 1 | -4 | -6 | -2 | 2 | 0 | 1 | -5 | -10 | -12 | -16 | -14 | -10 | -12 | -10 | -8 | -11 | -9 | -7 | -6 | -4 | -1 | -4 | -4 | -3 | -6 | -6 | -4 | -5 | -2 | 0 |
Moonrise | 6:45 | — | — | 7:25 | — | — | 7:58 | — | — | 8:25 | — | — | 8:50 | — | — | 9:12 | — | — | 9:33 | — | — | 9:55 | — | — | 10:20 | — | — | 10:50 | — | — | 11:27 | — | — | 12:14 | — | — | 1:13 | — | — | 2:24 | — | — | — | 3:41 | — | — | 4:59 |
Moonset | — | 3:34 | — | — | 4:40 | — | — | 5:48 | — | — | 6:56 | — | — | 8:04 | — | — | — | 9:12 | — | — | 10:21 | — | — | 11:32 | — | — | — | 12:46 | — | — | 2:03 | — | — | 3:19 | — | — | 4:32 | — | — | 5:34 | — | — | 6:24 | — | — | 7:04 | — |
 | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | 7:01 | — |
 | — | 4:51 | — | — | 4:52 | — | — | 4:52 | — | — | 4:53 | — | — | 4:55 | — | — | 4:57 | — | — | 4:58 | — | — | 4:59 | — | — | 5:00 | — | — | 5:01 | — | — | 5:02 | — | — | 5:04 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:08 |
Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 4.2° C (Statistics for 17 Jan 1981-2005 – mean: 6.0 max: 7.8 min: 4.2°C) | |||||||||||||||||||||||||||||||||||||||||||||||
Nearest