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 06:37 AM and sunset is at 06:52 PM.

	Days 1–3 Weather Summary Moderate rain (total 12mm), heaviest on Sun morning. Warm air temperatures (max 20°C on Sun night, min 11°C on Tue night). Winds increasing (light winds from the ENE on Mon afternoon, fresh winds from the NE by Tue night).									Days 4–6 Weather Summary Heavy rain (total 23mm), heaviest during Fri afternoon. Cool air temperatures (max 18°C on Thu afternoon, min 10°C on Thu morning). Winds increasing (fresh winds from the ENE on Thu afternoon, gales from the NE by Fri night).									Days 7–9 Weather Summary Heavy rain (total 35mm), heaviest during Sun afternoon. Very mild (max 15°C on Sat night, min 13°C on Sun afternoon). Winds decreasing (gales from the NE on Sat morning, moderate winds from the NE by Mon night).									Days 10–12 Weather Summary Moderate rain (total 13mm), heaviest on Tue afternoon. Warm (max 23°C on Wed afternoon, min 10°C on Fri morning). Wind will be generally light.									Days 13–16 Weather Summary Mostly dry. Very mild (max 19°C on Mon afternoon, min 11°C on Sat morning). Winds decreasing (fresh winds from the NW on Fri afternoon, light winds from the W by Sun afternoon).
	Sunday 20			Monday 21			Tuesday 22			Wednesday 23			Thursday 24			Friday 25			Saturday 26			Sunday 27			Monday 28			Tuesday 29			Wednesday 30			Thursday 1			Friday 2			Saturday 3			Sunday 4			Mon 5
	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	AM	PM
Wave Height Map See all maps
High Tide	6:59AM1.79m		7:18PM1.98m	7:54AM1.87m		8:12PM2.03m	8:43AM1.96m		9:01PM2.09m	9:28AM2.07m		9:46PM2.15m	10:09AM2.16m		10:28PM2.19m	10:48AM2.25m		11:09PM2.22m		11:27AM2.32m	11:49PM2.22m		12:06PM2.37m	00:30AM2.19m		12:46PM2.40m	1:13AM2.14m		1:29PM2.39m	1:59AM2.07m		2:17PM2.34m	2:51AM1.98m		3:10PM2.26m	3:49AM1.90m		4:11PM2.17m	4:55AM1.85m			5:20PM2.10m	6:07AM1.85m		6:33PM2.07m
Low Tide		1:08PM0.54m	1:46AM0.41m		2:03PM0.48m	2:35AM0.34m		2:54PM0.39m	3:21AM0.26m		3:40PM0.27m	4:02AM0.16m		4:22PM0.14m	4:41AM0.08m			5:03PM0.02m	5:19AM0.02m		5:44PM-0.07m	5:57AM-0.02m		6:25PM-0.13m	6:35AM-0.03m		7:08PM-0.14m	7:16AM0.00m		7:54PM-0.11m	8:01AM0.08m		8:44PM-0.03m	8:53AM0.18m		9:42PM0.07m	9:53AM0.29m		10:46PM0.17m		11:02AM0.37m	11:55PM0.23m		12:18PM0.39m
Wave Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	light rain	light rain	light rain	some clouds	cloudy	some clouds	light rain	light rain	some clouds	cloudy	some clouds	cloudy	some clouds	some clouds	some clouds	cloudy	mod rain	heavy rain	light rain	light rain	light rain	light rain	heavy rain	mod rain	cloudy	light rain	light rain	light rain	mod rain	some clouds	some clouds	clear	rain shwrs	rain shwrs	cloudy	some clouds	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	some clouds	clear
km/h	SSE	S	N	NNE	ENE	ENE	ENE	ENE	NE	NE	ENE	NE	NE	ENE	NE	NE	NNE	NE	NE	NE	NE	NE	NE	ENE	NE	NE	NE	NNE	NNW	W	W	SW	W	N	NNW	NW	NW	NW	WNW	NW	NW	NW	NNW	SW	S	S	S
mm	3	3	4	—	—	—	1	1	—	—	—	—	—	—	—	—	9	14	4	1	2	4	16	6	—	1	1	3	7	—	—	—	2	1	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	18	19	20	16	20	19	14	14	14	14	16	15	14	18	15	14	16	14	14	14	15	15	13	14	15	15	14	14	14	15	17	23	21	15	17	14	12	16	15	13	17	16	13	16	16	18	19
Moonrise	—	3:57	—	—	4:30	—	—	4:59	—	—	5:24	—	—	5:46	—	—	6:08	—	—	6:30	—	—	6:54	—	—	7:22	—	—	7:56	—	—	8:38	—	—	—	9:31	—	—	10:35	—	—	11:47	—	—	—	1:03	—
Moonset	12:02	—	—	1:04	—	—	2:08	—	—	3:14	—	—	4:20	—	—	5:27	—	—	6:35	—	—	7:45	—	—	8:58	—	—	10:14	—	—	11:30	—	—	12:43	—	—	1:49	—	—	2:43	—	—	—	3:27	—	—	4:01
	6:37	—	—	6:37	—	—	6:39	—	—	6:39	—	—	6:41	—	—	6:41	—	—	6:43	—	—	6:43	—	—	6:45	—	—	6:46	—	—	6:47	—	—	6:48	—	—	6:48	—	—	6:50	—	—	6:50	—	—	6:52	—
	—	6:52	—	—	6:52	—	—	6:50	—	—	6:47	—	—	6:46	—	—	6:45	—	—	6:43	—	—	6:40	—	—	6:39	—	—	6:37	—	—	6:36	—	—	6:35	—	—	6:32	—	—	6:30	—	—	6:30	—	—	6:28
	Today's sea temperature in Port Jefferson Harbor entrance, Long Island Sound is 23.1°C (Statistics for 20 Sep 1981-2005 – mean: 19.3 max: 21.2 min: 16.8°C)