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 06:33 AM and sunset is at 07:17 PM.
Days 1–3 Weather SummaryLight rain (total 9mm), mostly falling on Thu night. Cool air temperatures (max 19°C on Thu night, min 5°C on Sat afternoon). Winds decreasing (fresh winds from the SSW on Thu afternoon, calm by Fri afternoon). | Days 4–6 Weather SummaryModerate rain (total 13mm), heaviest on Sun night. Cool air temperatures (max 12°C on Sun morning, min 1°C on Tue night). Winds increasing (light winds from the NNE on Sun night, strong winds from the W by Tue night). | Days 7–9 Weather SummaryLight rain (total 4mm), mostly falling on Fri night. Mild temperatures (max 7°C on Thu afternoon, min 1°C on Wed morning). Winds decreasing (strong winds from the W on Wed morning, light winds from the E by Fri afternoon). | Days 10–12 Weather SummaryHeavy rain (total 23mm), heaviest during Sat morning. Very mild (max 11°C on Mon afternoon, min 1°C on Sun morning). Winds decreasing (near gales from the N on Sat morning, light winds from the NNW by Sun night). | |||||||||||||||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||||||||||||
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 | 4:18PM6.07ft | 4:40AM6.76ft | 5:25PM5.87ft | 5:49AM6.5ft | 6:35PM5.87ft | 7:01AM6.4ft | 7:43PM6.07ft | 8:09AM6.43ft | 8:42PM6.33ft | 9:07AM6.53ft | 9:33PM6.59ft | 9:58AM6.59ft | 10:17PM6.82ft | 10:41AM6.63ft | 10:55PM6.96ft | 11:20AM6.59ft | 11:31PM7.02ft | 11:56AM6.5ft | 00:06AM7.02ft | 12:31PM6.43ft | 00:40AM7.02ft | 1:05PM6.33ft | 1:13AM6.96ft | |||||||||||||
Low Tide | 10:07AM-0.2ft | 10:24PM0.66ft | 11:13AM0.26ft | 11:34PM0.95ft | 12:21PM0.56ft | 00:46AM1.05ft | 1:29PM0.69ft | 1:55AM0.92ft | 2:30PM0.66ft | 2:56AM0.66ft | 3:22PM0.56ft | 3:48AM0.39ft | 4:08PM0.43ft | 4:33AM0.13ft | 4:48PM0.36ft | 5:13AM-0.07ft | 5:25PM0.33ft | 5:51AM-0.13ft | 6:00PM0.33ft | 6:26AM-0.13ft | 6:34PM0.43ft | 7:01AM-0.07ft | 7:07PM0.56ft | |||||||||||||
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light rain | cloudy | rain shwrs | rain shwrs | some clouds | cloudy | cloudy | light rain | cloudy | some clouds | light rain | mod rain | cloudy | cloudy | light rain | light rain | cloudy | some clouds | some clouds | some clouds | clear | cloudy | cloudy | cloudy | light rain | cloudy | light rain | heavy rain | light rain | light rain | cloudy | cloudy | some clouds | some clouds | some clouds | some clouds | |
mph | ||||||||||||||||||||||||||||||||||||
0.1 | — | 0.1 | 0.08 | — | — | — | 0.04 | — | — | 0.04 | 0.2 | — | — | 0.2 | 0.04 | — | — | — | — | — | — | — | — | 0.04 | — | 0.1 | 0.7 | 0.2 | 0.04 | — | — | — | — | — | — | |
max°F | 52 | 55 | 66 | 54 | 59 | 57 | 45 | 43 | 48 | 54 | 50 | 46 | 41 | 43 | 43 | 43 | 46 | 39 | 37 | 43 | 41 | 37 | 45 | 45 | 45 | 45 | 45 | 41 | 39 | 39 | 39 | 46 | 46 | 43 | 52 | 50 |
Moonrise | 9:47 | — | — | 10:50 | — | — | 11:58 | — | — | 1:08 | — | — | 2:16 | — | — | — | 3:21 | — | — | 4:24 | — | — | 5:26 | — | — | 6:26 | — | — | 7:27 | — | — | 8:29 | — | — | — | 9:32 |
Moonset | 1:08 | — | — | 2:12 | — | — | 3:03 | — | — | 3:43 | — | — | 4:14 | — | — | 4:39 | — | — | 5:01 | — | — | 5:20 | — | — | 5:39 | — | — | 5:57 | — | — | 6:17 | — | — | 6:40 | — | — |
 | 6:33 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — |
 | — | 7:17 | — | — | 7:19 | — | — | 7:21 | — | — | 7:22 | — | — | 7:22 | — | — | 7:23 | — | — | 7:24 | — | — | 7:25 | — | — | 7:27 | — | — | 7:28 | — | — | 7:29 | — | — | 7:30 | — |
Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 43 °F (Statistics for 03 Apr 1981-2005 – mean: 42 max: 44 min: 39°F) | ||||||||||||||||||||||||||||||||||||
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