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 07:47 PM.

	Days 1–4 Weather Summary Some drizzle, heaviest during Sat morning. Cool air temperatures (max 15°C on Fri afternoon, min 7°C on Sun morning). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 9mm), mostly falling on Wed afternoon. Warm air temperatures (max 21°C on Tue afternoon, min 12°C on Mon night). Mainly fresh winds.									Days 8–10 Weather Summary Heavy rain (total 24mm), heaviest during Thu afternoon. Very mild (max 17°C on Sat afternoon, min 7°C on Thu night). Winds decreasing (strong winds from the WNW on Thu night, light winds from the WSW by Sat afternoon).									Days 11–13 Weather Summary Moderate rain (total 15mm), heaviest on Sun afternoon. Very mild (max 19°C on Tue afternoon, min 13°C on Sun afternoon). Winds increasing (calm on Sun night, fresh winds from the SSW by Mon morning).
	Fri 1		Saturday 2			Sunday 3			Monday 4			Tuesday 5			Wednesday 6			Thursday 7			Friday 8			Saturday 9			Sunday 10			Monday 11			Tuesday 12			Wednesday 13			Thursday 14			Friday 15			Saturday 16
	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	night
Wave Height Map See all maps
High Tide	12:02PM1.97m	00:11AM2.22m		12:40PM1.95m	00:47AM2.19m		1:17PM1.92m	1:24AM2.16m		1:54PM1.91m	2:02AM2.12m		2:33PM1.90m	2:41AM2.08m		3:15PM1.90m	3:25AM2.05m		4:00PM1.90m	4:12AM2.01m		4:49PM1.92m		5:04AM1.98m		5:41PM1.95m	5:59AM1.96m		6:33PM2.01m	6:56AM1.96m		7:26PM2.09m	7:52AM1.97m		8:17PM2.19m	8:46AM2.00m		9:07PM2.28m	9:39AM2.04m		9:58PM2.37m	10:31AM2.07m
Low Tide		6:03PM0.11m	6:34AM-0.07m		6:40PM0.16m	7:12AM-0.02m		7:17PM0.22m	7:49AM0.05m		7:54PM0.29m	8:27AM0.13m		8:35PM0.36m	9:08AM0.20m		9:18PM0.42m	9:51AM0.27m		10:06PM0.46m	10:38AM0.31m		10:59PM0.47m		11:28AM0.32m	11:55PM0.43m		12:19PM0.31m	00:52AM0.35m		1:12PM0.26m	1:48AM0.23m		2:03PM0.20m	2:42AM0.09m		2:54PM0.12m	3:34AM-0.04m		3:44PM0.05m	4:25AM-0.16m		4:34PM0.00m
Wave height (m) direction period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	clear	some clouds	light rain	cloudy	some clouds	clear	some clouds	some clouds	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	light rain	light rain	light rain	heavy rain	some clouds	some clouds	clear	clear	clear	some clouds	some clouds	light rain	mod rain	light rain	light rain	light rain	some clouds	some clouds	clear	some clouds	clear	clear	mod rain	rain shwrs	some clouds	some clouds	some clouds	clear	rain shwrs	clear	clear	clear
km/h	SW	SSW	W	NNW	N	NW	WNW	S	WSW	SW	SSW	SW	SSW	SSW	SSW	SSW	SSW	SSW	WSW	WNW	WNW	WNW	W	WSW	WSW	S	S	ESE	S	SSW	WSW	WNW	W	SSE	W	WSW	W	NNE	NE	WSW	S	WSW	SSW	WNW	WNW	W	WNW
mm	—	—	1	—	—	—	—	—	—	—	—	—	—	—	—	4	2	3	23	—	—	—	—	—	—	—	1	8	4	2	1	—	—	—	—	—	—	9	1	—	—	—	—	2	—	—	—
max°C	15	12	11	12	12	10	14	14	15	17	16	18	21	16	16	15	14	15	15	11	9	13	12	12	17	14	13	13	15	16	17	17	15	19	16	17	19	19	12	17	16	18	23	19	13	19	18
Moonrise	8:13	—	—	—	9:17	—	—	10:18	—	—	11:15	—	—	—	12:05	—	—	12:48	—	—	1:23	—	—	1:53	—	—	2:19	—	—	2:42	—	—	3:04	—	—	3:27	—	—	3:51	—	—	4:19	—	—	4:54	—	—
Moonset	—	—	5:50	—	—	6:23	—	—	7:03	—	—	7:51	—	—	8:46	—	—	9:47	—	—	10:51	—	—	11:56	—	—	1:02	—	—	2:09	—	—	—	3:18	—	—	4:30	—	—	5:45	—	—	7:05	—	—	8:27	—
	—	—	5:48	—	—	5:48	—	—	5:47	—	—	5:46	—	—	5:43	—	—	5:43	—	—	5:41	—	—	5:41	—	—	5:39	—	—	5:39	—	—	5:37	—	—	5:37	—	—	5:35	—	—	5:35	—	—	5:33	—	—
	7:47	—	—	7:49	—	—	7:50	—	—	7:51	—	—	7:52	—	—	7:52	—	—	7:53	—	—	7:54	—	—	7:55	—	—	7:57	—	—	7:58	—	—	7:59	—	—	8:00	—	—	8:00	—	—	8:01	—	—	8:02	—
	Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 9.4° C (Statistics for 01 May 1981-2005 – mean: 8.6 max: 9.9 min: 6.8°C)