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 06:07 AM and sunset is at 07:35 PM.

	Days 1–3 Weather Summary Light rain (total 8mm), mostly falling on Thu afternoon. Cool air temperatures (max 17°C on Sat afternoon, min 5°C on Thu afternoon). Winds decreasing (strong winds from the E on Thu morning, calm by Sat morning).									Days 4–6 Weather Summary Mostly dry. Cool air temperatures (max 14°C on Mon afternoon, min 6°C on Sun morning). Wind will be generally light.									Days 7–9 Weather Summary Moderate rain (total 18mm), heaviest on Wed afternoon. Very mild (max 13°C on Wed afternoon, min 1°C on Thu morning). Winds decreasing (fresh winds from the NNW on Wed night, calm by Fri morning).									Days 10–12 Weather Summary Moderate rain (total 17mm), heaviest on Sat morning. Very mild (max 15°C on Mon afternoon, min 6°C on Sat morning). Winds decreasing (fresh winds from the ENE on Sat afternoon, light winds from the SW by Tue morning).
	Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thursday 25			Friday 26			Saturday 27			Sunday 28			Monday 29
	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 See all maps
High Tide	8:21AM1.91m		8:48PM1.94m	9:12AM1.93m		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
Low Tide		2:38PM0.31m	3:04AM0.29m		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
Wave height (m) direction period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	light rain	light rain	rain shwrs	clear	cloudy	light rain	rain shwrs	cloudy	clear	clear	some clouds	some clouds	clear	some clouds	some clouds	some clouds	clear	cloudy	light rain	mod rain	clear	clear	clear	clear	clear	some clouds	mod rain	mod rain	light rain	mod rain	cloudy	some clouds	clear	clear	clear	clear
km/h	ENE	ENE	ENE	E	SE	SSW	WNW	W	NW	W	SW	WNW	W	SE	NNE	E	S	S	SSW	W	NNW	NNW	WNW	N	ENE	SSW	S	E	ENE	NE	NE	ENE	ENE	E	SSE	SSW
mm	2.0	3	1.0	—	—	1.0	1.0	—	—	—	—	—	—	—	—	—	—	—	4	8	—	—	—	—	—	—	6	6	3	8	—	—	—	—	—	—
max°C	6	6	6	8	10	9	12	17	12	9	13	13	11	14	13	9	13	11	12	13	13	4	11	11	7	10	9	7	8	8	10	14	12	11	15	11
Moonrise	2:34	—	—	—	3:35	—	—	4:36	—	—	5:36	—	—	6:37	—	—	7:40	—	—	8:45	—	—	—	9:53	—	—	11:00	—	—	—	12:04	—	—	1:02	—	—
Moonset	4:05	—	—	4:26	—	—	4:46	—	—	5:04	—	—	5:23	—	—	5:42	—	—	6:05	—	—	6:32	—	—	7:05	—	—	7:46	—	—	8:38	—	—	9:40	—	—
	6:07	—	—	6:05	—	—	6:03	—	—	6:03	—	—	6:01	—	—	6:00	—	—	5:58	—	—	5:56	—	—	5:56	—	—	5:54	—	—	5:52	—	—	5:52	—	—
	—	7:35	—	—	7:36	—	—	7:37	—	—	7:38	—	—	7:39	—	—	7:40	—	—	7:42	—	—	7:43	—	—	7:44	—	—	7:45	—	—	7:45	—	—	7:46	—
	Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 9.1 °C (Statistics for 18 Apr 1981-2005 – mean: 7.0 max: 9.0 min: 5.0°C)