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 — and sunset is at 07:36 PM.

	Days 1–4 Weather Summary Light rain (total 2mm), mostly falling on Sat morning. Cool air temperatures (max 15°C on Sat afternoon, min 6°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 5mm), mostly falling on Wed afternoon. Cool air temperatures (max 13°C on Wed morning, min 1°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the WNW by Wed night).									Days 8–10 Weather Summary Mostly dry. Very mild (max 15°C on Sat afternoon, min 5°C on Sat morning). Winds decreasing (strong winds from the WSW on Thu afternoon, light winds from the NNW by Fri night).									Days 11–13 Weather Summary Heavy rain (total 22mm), heaviest during Mon night. Very mild (max 18°C on Tue night, min 7°C on Sun night). Wind will be generally light.
	Fri 19		Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thursday 25			Friday 26			Saturday 27			Sunday 28			Monday 29			Tuesday 30			Wed 1
	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
Wave Height Map See all maps
High Tide		9:32PM2.01m	9:56AM1.95m		10:12PM2.07m	10:36AM1.97m		10:49PM2.11m		11:13AM1.97m	11:24PM2.15m		11:50AM1.97m	11:58PM2.17m		12:26PM1.95m	00:33AM2.18m		1:03PM1.94m	1:10AM2.18m		1:41PM1.92m	1:49AM2.18m		2:24PM1.90m	2:32AM2.15m		3:11PM1.89m	3:22AM2.12m		4:04PM1.89m	4:19AM2.08m			5:03PM1.91m	5:23AM2.04m
Low Tide	3:23PM0.27m	3:50AM0.20m		4:04PM0.23m	4:30AM0.12m		4:42PM0.20m		5:09AM0.06m		5:18PM0.17m	5:45AM0.01m		5:52PM0.17m	6:21AM-0.01m		6:27PM0.18m	6:58AM-0.01m		7:02PM0.22m	7:36AM0.02m		7:39PM0.26m	8:17AM0.06m		8:21PM0.31m	9:02AM0.12m		9:10PM0.36m	9:53AM0.17m		10:07PM0.39m	10:50AM0.21m		11:12PM0.39m
Wave height (m) direction period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	some clouds	some clouds	light rain	cloudy	clear	clear	some clouds	some clouds	clear	clear	clear	clear	clear	cloudy	cloudy	rain shwrs	clear	some clouds	some clouds	some clouds	cloudy	some clouds	clear	clear	clear	some clouds	some clouds	clear	clear	cloudy	light rain	heavy rain	light rain	rain shwrs	rain shwrs	some clouds
km/h	SE	S	W	WSW	NW	W	WSW	WNW	NNW	SW	NW	S	S	S	S	SW	WNW	WSW	W	W	WNW	WNW	NNW	NW	WNW	NE	ENE	SSE	SSE	SSE	SSE	SW	SW	W	W	WNW
mm	—	—	2.0	—	—	—	—	—	—	—	—	—	—	—	—	5	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1.0	14	3	3	1.0	—
max°C	10	9	10	15	12	8	13	12	8	12	12	12	12	10	13	12	9	5	9	9	8	12	11	9	15	15	8	12	9	9	8	14	15	17	18	16
Moonrise	3:35	—	—	4:36	—	—	5:36	—	—	6:37	—	—	7:40	—	—	8:45	—	—	—	9:53	—	—	11:00	—	—	—	12:04	—	—	1:02	—	—	1:50	—	—	2:29
Moonset	4:26	—	4:46	—	—	5:04	—	—	5:23	—	—	5:42	—	—	6:05	—	—	6:32	—	—	7:05	—	—	7:46	—	—	8:38	—	—	9:40	—	—	10:51	—	—	12:06
	—	—	6:03	—	—	6:03	—	—	6:01	—	—	6:00	—	—	5:58	—	—	5:56	—	—	5:56	—	—	5:54	—	—	5:52	—	—	5:52	—	—	5:50	—	—	5:48
	7:36	—	—	7:37	—	—	7:38	—	—	7:39	—	—	7:40	—	—	7:42	—	—	7:43	—	—	7:44	—	—	7:45	—	—	7:45	—	—	7:46	—	—	7:47	—	—
	Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 9.5 °C (Statistics for 19 Apr 1981-2005 – mean: 7.1 max: 9.0 min: 5.0°C)