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 07:03 AM and sunset is at 04:23 PM.
Days 1–3 Weather SummaryMostly dry. Icy conditions (max 6°C on Tue afternoon, min -6°C on Mon morning). Winds decreasing (strong winds from the NNW on Sun night, calm by Mon night). | Days 4–6 Weather SummarySome drizzle, heaviest during Wed afternoon. Low air temperatures (max 9°C on Wed afternoon, min 1°C on Thu morning). Winds decreasing (strong winds from the SSW on Wed morning, calm by Thu night). | Days 7–9 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 1°C on Mon morning, min -4°C on Sat night). Wind will be generally light. | Days 10–12 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 5°C on Thu night, min -2°C on Mon night). Winds decreasing (near gales from the N on Tue afternoon, light winds from the W by Wed night). | ||||||||||||||||||||||||||||||||
Sunday 7 | Monday 8 | Tuesday 9 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | ||||||||||||||||||||||||
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 | 12:38PM2.35m | 1:16AM2.03m | 1:34PM2.24m | 2:12AM2.00m | 2:31PM2.12m | 3:09AM1.97m | 3:31PM1.99m | 4:08AM1.94m | 4:32PM1.89m | 5:07AM1.94m | 5:34PM1.81m | 6:04AM1.94m | 6:33PM1.76m | 6:58AM1.97m | 7:28PM1.74m | 7:48AM2.00m | 8:18PM1.74m | 8:33AM2.03m | 9:04PM1.76m | 9:16AM2.07m | 9:46PM1.79m | 9:56AM2.10m | |||||||||||||
Low Tide | 7:06PM-0.21m | 7:21AM0.03m | 8:01PM-0.11m | 8:21AM0.10m | 8:57PM-0.00m | 9:22AM0.17m | 9:54PM0.09m | 10:25AM0.21m | 10:52PM0.16m | 11:28AM0.22m | 11:48PM0.21m | 12:28PM0.20m | 00:42AM0.23m | 1:23PM0.17m | 1:33AM0.23m | 2:14PM0.13m | 2:20AM0.23m | 3:00PM0.09m | 3:04AM0.22m | 3:43PM0.06m | 3:45AM0.22m | 4:22PM0.04m | |||||||||||||
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some clouds | some clouds | some clouds | cloudy | cloudy | some clouds | some clouds | cloudy | some clouds | some clouds | light rain | some clouds | clear | some clouds | cloudy | cloudy | some clouds | clear | clear | some clouds | clear | clear | clear | some clouds | some clouds | light snow | light snow | cloudy | light snow | some clouds | some clouds | clear | clear | some clouds | cloudy | |
km/h | |||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 4 | 4 | 4 | -4 | -3 | -4 | 0 | 6 | 4 | 8 | 9 | 8 | 2 | 3 | 2 | 2 | 3 | 0 | -1 | 0 | -2 | -2 | 0 | -1 | 1 | 0 | 0 | -1 | -2 | -1 | 1 | 2 | 0 | 2 | 4 |
Moonrise | — | 7:20 | — | — | 8:36 | — | — | — | 9:48 | — | — | 10:56 | — | — | — | 12:01 | — | — | 1:03 | — | — | 2:05 | — | — | 3:06 | — | — | 4:09 | — | — | 5:12 | — | — | 6:14 | — |
Moonset | 10:03 | — | — | 10:42 | — | — | 11:13 | — | — | 11:38 | — | — | 11:59 | — | — | 12:19 | — | — | 12:38 | — | — | 12:59 | — | — | 1:22 | — | — | 1:49 | — | — | 2:21 | — | — | — | 3:00 |
 | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — |
 | — | 4:23 | — | — | 4:22 | — | — | 4:23 | — | — | 4:23 | — | — | 4:23 | — | — | 4:23 | — | — | 4:23 | — | — | 4:23 | — | — | 4:24 | — | — | 4:24 | — | — | 4:24 | — | — | 4:25 |
Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 9.2° C (Statistics for 07 Dec 1981-2005 – mean: 9.9 max: 12.7 min: 8.2°C) | |||||||||||||||||||||||||||||||||||
Nearest