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 07:49 PM.

	Days 1–4 Weather Summary Mostly dry. Warm air temperatures (max 24°C on Thu afternoon, min 9°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 10mm), heaviest on Sun afternoon. Warm air temperatures (max 21°C on Mon afternoon, min 7°C on Sat night). Wind will be generally light.									Days 8–10 Weather Summary Moderate rain (total 14mm), heaviest on Thu morning. Warm (max 23°C on Wed afternoon, min 14°C on Tue night). Wind will be generally light.									Days 11–13 Weather Summary Light rain (total 6mm), mostly falling on Sat night. Warm (max 22°C on Fri afternoon, min 9°C on Sat night). Winds increasing (light winds from the WSW on Fri night, fresh winds from the NNW by Sat night).
	Wed 1		Thursday 2			Friday 3			Saturday 4			Sunday 5			Monday 6			Tuesday 7			Wednesday 8			Thursday 9			Friday 10			Saturday 11			Sunday 12			Mon 13
	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		6:05PM1.97m	6:29AM2.03m		7:07PM2.06m	7:34AM2.05m		8:06PM2.17m	8:36AM2.08m		9:02PM2.28m	9:33AM2.12m		9:54PM2.37m	10:27AM2.14m		10:45PM2.44m		11:19AM2.14m	11:34PM2.46m		12:09PM2.12m	00:23AM2.43m		12:59PM2.07m	1:12AM2.37m		1:48PM2.02m	2:02AM2.28m		2:39PM1.96m	2:53AM2.17m		3:31PM1.91m	3:47AM2.06m
Low Tide	11:51AM0.22m	00:20AM0.33m		12:53PM0.18m	1:26AM0.20m		1:52PM0.11m	2:28AM0.05m		2:49PM0.03m	3:25AM-0.11m		3:42PM-0.05m	4:19AM-0.24m		4:33PM-0.10m		5:11AM-0.32m		5:22PM-0.12m	6:01AM-0.34m		6:11PM-0.09m	6:50AM-0.31m		7:00PM-0.02m	7:40AM-0.22m		7:50PM0.08m	8:30AM-0.09m		8:42PM0.19m	9:21AM0.05m		9:37PM0.30m	10:15AM0.18m
Wave height (m) direction period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	some clouds	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	some clouds	cloudy	light rain	light rain	light rain	some clouds	some clouds	some clouds	some clouds	some clouds	rain shwrs	cloudy	some clouds	rain shwrs	rain shwrs	risk tstorm	clear	clear	cloudy	rain shwrs	some clouds	rain shwrs	rain shwrs	clear	some clouds	clear	clear
km/h	SE	SSE	WSW	NW	NNE	E	ESE	E	E	ESE	ESE	SE	SE	ESE	WNW	NNE	SSW	NE	S	SW	SSW	S	SW	SW	WSW	W	WSW	WSW	WSW	W	N	NNW	NW	NW	WNW	WSW
mm	—	—	—	—	—	—	—	—	—	—	—	3	5	2.0	—	—	—	—	—	1.0	—	—	3	8	2.0	—	—	—	1.0	—	1.0	4	—	—	—	—
max°C	18	11	16	24	19	11	14	11	12	14	9	7	7	10	12	21	18	16	19	17	17	23	22	20	23	20	19	22	18	15	16	12	14	17	16	17
Moonrise	2:29	—	3:02	—	—	3:29	—	—	3:54	—	—	4:18	—	—	4:42	—	—	5:10	—	—	5:41	—	—	6:20	—	—	7:07	—	—	8:04	—	—	9:07	—	—	10:13
Moonset	12:06	—	1:22	—	—	2:38	—	—	—	3:54	—	—	5:10	—	—	6:27	—	—	7:46	—	—	—	9:05	—	—	10:20	—	—	11:26	—	—	—	12:21	—	—	1:05
	—	—	5:48	—	—	5:47	—	—	5:46	—	—	5:43	—	—	5:43	—	—	5:41	—	—	5:41	—	—	5:39	—	—	5:39	—	—	5:37	—	—	5:37	—	—	5:35
	7:49	—	—	7:50	—	—	7:51	—	—	7:52	—	—	7:52	—	—	7:53	—	—	7:54	—	—	7:55	—	—	7:57	—	—	7:58	—	—	7:59	—	—	8:00	—	—
	Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 8.7 °C (Statistics for 01 May 1981-2005 – mean: 8.8 max: 10.4 min: 6.8°C)