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 07:51 PM.

	Days 1–4 Weather Summary Moderate rain (total 18mm), heaviest on Sun afternoon. Cool air temperatures (max 15°C on Mon morning, min 7°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 4mm), mostly falling on Mon night. Warm air temperatures (max 21°C on Mon afternoon, min 11°C on Wed night). Wind will be generally light.									Days 8–10 Weather Summary Moderate rain (total 17mm), heaviest on Fri night. Very mild (max 16°C on Sat afternoon, min 10°C on Thu afternoon). Wind will be generally light.									Days 11–13 Weather Summary Mostly dry. Warm (max 26°C on Wed afternoon, min 11°C on Sun night). Wind will be generally light.
	Fri 3		Saturday 4			Sunday 5			Monday 6			Tuesday 7			Wednesday 8			Thursday 9			Friday 10			Saturday 11			Sunday 12			Monday 13			Tuesday 14			Wed 15
	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		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		4:26PM1.88m	4:44AM1.97m			5:22PM1.88m	5:42AM1.90m
Low Tide	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		10:35PM0.39m		11:09AM0.28m	11:36PM0.44m
Wave height (m) direction period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	some clouds	some clouds	some clouds	cloudy	cloudy	cloudy	mod rain	heavy rain	some clouds	some clouds	light rain	cloudy	clear	some clouds	cloudy	light rain	cloudy	cloudy	mod rain	some clouds	some clouds	light rain	mod rain	some clouds	clear	some clouds	cloudy	some clouds	some clouds	clear	clear	some clouds	some clouds	some clouds	some clouds	clear
km/h	E	E	ENE	E	ESE	SE	SE	SSW	WSW	S	NNE	ENE	ESE	S	SSE	NE	NE	E	ENE	NE	E	SSE	NE	E	ESE	ENE	ENE	ESE	S	WNW	SSE	SW	N	S	SW	WSW
mm	—	—	—	—	—	—	7	11	—	—	3	—	—	—	—	1.0	—	—	6	—	—	2.0	9	—	—	—	—	—	—	—	—	—	—	—	—	—
max°C	14	11	12	13	9	8	9	13	15	21	19	15	18	16	14	15	13	11	10	10	12	14	11	11	16	12	12	15	12	14	17	14	16	20	16	21
Moonrise	3:29	—	3:54	—	—	4:18	—	—	4:42	—	—	5:10	—	—	5:41	—	—	6:20	—	—	7:07	—	—	8:04	—	—	9:07	—	—	10:13	—	—	11:19	—	—	12:23
Moonset	2:38	—	—	3:54	—	—	5:10	—	—	6:27	—	—	7:46	—	—	—	9:05	—	—	10:20	—	—	11:26	—	—	—	12:21	—	—	1:05	—	—	1:40	—	—	2:07
	—	—	5:46	—	—	5:43	—	—	5:43	—	—	5:41	—	—	5:41	—	—	5:39	—	—	5:39	—	—	5:37	—	—	5:37	—	—	5:35	—	—	5:35	—	—	5:33
	7:51	—	—	7:52	—	—	7:52	—	—	7:53	—	—	7:54	—	—	7:55	—	—	7:57	—	—	7:58	—	—	7:59	—	—	8:00	—	—	8:00	—	—	8:01	—	—
	Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 8.7 °C (Statistics for 03 May 1981-2005 – mean: 9.2 max: 11.2 min: 6.8°C)