Port Jefferson Harbor entrance, Long Island Sound Sea Conditions and Tide Table

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 06:31 AM and sunset is at 07:19 PM.

	Days 1–3 Weather Summary Moderate rain (total 10mm), heaviest on Sun afternoon. Cool air temperatures (max 15°C on Sat afternoon, min 2°C on Sat night). Winds decreasing (fresh winds from the WNW on Sun night, light winds from the W by Mon night).									Days 4–6 Weather Summary Mostly dry. Icy conditions (max 13°C on Thu afternoon, min -2°C on Wed morning). Winds decreasing (fresh winds from the NW on Tue afternoon, light winds from the E by Wed afternoon).									Days 7–9 Weather Summary Mostly dry. Very mild (max 18°C on Sun afternoon, min 1°C on Sat morning). Winds increasing (light winds from the NNE on Fri afternoon, fresh winds from the SSW by Sun night).									Days 10–12 Weather Summary Moderate rain (total 12mm), heaviest on Mon afternoon. Very mild (max 19°C on Mon afternoon, min 8°C on Tue morning). Wind will be generally light.
	Saturday 4			Sunday 5			Monday 6			Tuesday 7			Wednesday 8			Thursday 9			Friday 10			Saturday 11			Sunday 12			Monday 13			Tuesday 14			Wednesday 15			Thursday 16			Friday 17			Saturday 18			Sun 19
	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 See all maps
High Tide		1:42PM1.94m	1:53AM2.12m		2:21PM1.88m	2:32AM2.07m		3:01PM1.83m	3:14AM2.01m		3:45PM1.80m	3:59AM1.96m		4:34PM1.78m	4:50AM1.92m			5:27PM1.78m	5:45AM1.91m		6:23PM1.82m	6:43AM1.91m		7:18PM1.89m	7:40AM1.95m		8:10PM1.98m	8:33AM2.00m		8:59PM2.09m	9:23AM2.06m		9:45PM2.20m	10:12AM2.11m		10:30PM2.30m	10:58AM2.14m		11:15PM2.37m		11:45AM2.14m	00:00AM2.41m		12:33PM2.12m
Low Tide	7:38AM-0.10m		7:46PM0.09m	8:16AM-0.01m		8:24PM0.19m	8:56AM0.09m		9:04PM0.29m	9:39AM0.20m		9:50PM0.38m	10:27AM0.29m		10:41PM0.46m		11:19AM0.35m	11:37PM0.49m		12:13PM0.37m	00:36AM0.47m		1:08PM0.35m	1:33AM0.39m		2:00PM0.28m	2:27AM0.27m		2:49PM0.19m	3:17AM0.12m		3:36PM0.09m	4:05AM-0.03m		4:20PM0.00m	4:52AM-0.17m			5:04PM-0.06m	5:38AM-0.26m		5:49PM-0.10m	6:26AM-0.30m		6:36PM-0.09m
Wave height (m) direction period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	some clouds	some clouds	rain shwrs	light rain	mod rain	rain shwrs	clear	cloudy	clear	clear	some clouds	clear	clear	clear	clear	some clouds	some clouds	some clouds	clear	clear	clear	clear	some clouds	some clouds	clear	clear	some clouds	cloudy	light rain	mod rain	some clouds	clear	some clouds	some clouds	some clouds	cloudy	cloudy	some clouds	some clouds	light rain	light rain	light rain	cloudy	cloudy	cloudy	clear	clear
km/h	NE	E	E	SSW	SW	WNW	W	WNW	W	W	NW	N	ENE	S	SSW	SSW	SSW	SW	N	E	ESE	SSE	SSW	SSW	WSW	SSW	SSW	SW	W	NNW	NE	SW	SW	NNE	SSW	SE	SSE	S	SSW	SSW	W	NNE	ENE	E	ENE	ENE	ESE
mm	—	—	1	1	7	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	4	8	—	—	—	—	—	—	—	—	—	1	3	2	—	—	—	—	—
max°C	13	15	6	12	13	11	6	11	10	6	9	3	-1	3	4	9	13	12	6	11	5	4	6	10	14	18	15	17	19	15	9	13	12	11	15	13	10	14	13	14	15	15	11	9	8	7	10
Moonrise	—	—	10:24	—	—	11:28	—	—	—	12:28	—	—	1:23	—	—	2:11	—	—	2:51	—	—	3:25	—	—	3:53	—	—	4:18	—	—	4:41	—	—	5:04	—	—	5:27	—	—	5:53	—	—	6:25	—	—	7:03	—
Moonset	7:19	—	—	7:49	—	—	8:24	—	—	9:07	—	—	9:57	—	—	10:55	—	—	11:58	—	—	1:04	—	—	2:11	—	—	—	3:20	—	—	4:29	—	—	5:41	—	—	6:56	—	—	8:14	—	—	—	9:35	—	—
	6:31	—	—	6:30	—	—	6:28	—	—	6:26	—	—	6:24	—	—	6:22	—	—	6:20	—	—	6:20	—	—	6:18	—	—	6:16	—	—	6:15	—	—	6:13	—	—	6:11	—	—	6:09	—	—	6:09	—	—	6:07	—
	—	7:19	—	—	7:21	—	—	7:22	—	—	7:22	—	—	7:23	—	—	7:24	—	—	7:25	—	—	7:27	—	—	7:28	—	—	7:29	—	—	7:30	—	—	7:30	—	—	7:31	—	—	7:32	—	—	7:34	—	—	7:35
	Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 4.4° C (Statistics for 04 Apr 1981-2005 – mean: 5.5 max: 7.8 min: 4.0°C)