Block Island (Old Harbor) Sea Conditions and Tide Table

Block Island (Old Harbor) 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 07:43 PM.

	Days 1–4 Weather Summary Mostly dry. Cool air temperatures (max 19°C on Thu night, min 7°C on Wed night). Winds decreasing (fresh winds from the NE on Thu night, light winds from the NE by Fri night).											Days 5–7 Weather Summary Light rain (total 9mm), mostly falling on Sun night. Cool air temperatures (max 16°C on Mon night, min 6°C on Sun morning). Winds decreasing (fresh winds from the E on Sat afternoon, calm by Mon night).									Days 8–10 Weather Summary Moderate rain (total 10mm), heaviest on Wed night. Very mild (max 17°C on Thu night, min 11°C on Tue night). Winds increasing (light winds from the SW on Wed night, fresh winds from the SW by Thu afternoon).									Days 11–13 Weather Summary Light rain (total 7mm), mostly falling on Fri night. Very mild (max 16°C on Fri afternoon, min 9°C on Sat night). Winds decreasing (fresh winds from the WSW on Fri afternoon, light winds from the N by Sun afternoon).
	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	2:13PM0.78m	2:41AM0.89m		3:21PM0.84m	3:50AM0.90m		4:28PM0.94m	4:55AM0.93m			5:27PM1.05m	5:54AM0.97m		6:20PM1.15m	6:46AM0.99m		7:10PM1.22m	7:36AM1.00m		7:57PM1.25m	8:24AM0.99m		8:44PM1.24m	9:13AM0.96m		9:32PM1.18m	10:02AM0.91m		10:21PM1.10m	10:53AM0.86m		11:12PM1.00m		11:46AM0.81m	00:05AM0.91m
Low Tide		8:03PM0.16m	9:34AM0.08m		9:46PM0.12m	10:26AM0.02m		10:58PM0.05m		11:13AM-0.03m	11:59PM-0.02m		11:58AM-0.08m	00:55AM-0.09m		12:41PM-0.11m	1:47AM-0.13m		1:24PM-0.12m	2:36AM-0.14m		2:06PM-0.12m	3:24AM-0.11m		2:48PM-0.08m	4:11AM-0.06m		3:30PM-0.02m		5:01AM0.01m	4:13PM0.05m		5:55AM0.08m	5:00PM0.12m		6:57AM0.14m
Wave height (m) direction period (s)	S 6	S 6	S 6	S 4	NE 4	NE 4	E 4	E 4	SE 11	E 4	E 4	SE 5	SE 8	ESE 9	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	S 8	S 7	SSE 7	S 8	S 8	SSW 5	S 7	S 7	S 7	N 3	NNW 3	SSE 6	SE 8	SE 13

	clear	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	some clouds	cloudy	light rain	light rain	mod rain	some clouds	some clouds	some clouds	some clouds	cloudy	cloudy	cloudy	cloudy	rain shwrs	light rain	rain shwrs	clear	clear	some clouds	rain shwrs	some clouds	light rain	some clouds	some clouds	cloudy	clear	clear
km/h	SE	SSE	SSW	SW	NNE	NE	E	NE	E	E	E	SE	SSE	S	NW	SW	WNW	S	S	SSW	SSW	SSW	SW	SSW	SW	WNW	WSW	WSW	SW	W	N	NNW	NNW	S	NW	WSW
mm	—	—	—	—	—	—	—	—	—	—	—	1.0	2.0	6	—	—	—	—	—	—	—	—	3	5	2.0	—	—	—	3	—	4	—	—	—	—	—
max°C	9	8	9	12	19	10	11	10	11	9	8	7	7	11	12	15	16	12	13	13	11	13	14	14	14	17	14	16	14	13	14	12	12	14	14	15
Moonrise	2:24	—	2:56	—	—	3:23	—	—	3:48	—	—	4:12	—	—	4:36	—	—	5:03	—	—	5:35	—	—	6:13	—	—	7:00	—	—	7:56	—	—	8:59	—	—	10:06
Moonset	11:59	—	1:15	—	—	2:31	—	—	—	3:47	—	—	5:03	—	—	6:21	—	—	7:40	—	—	8:59	—	—	—	10:14	—	—	11:21	—	—	—	12:16	—	—	1:00
	—	—	5:41	—	—	5:39	—	—	5:39	—	—	5:37	—	—	5:37	—	—	5:35	—	—	5:33	—	—	5:33	—	—	5:31	—	—	5:31	—	—	5:30	—	—	5:28
	7:43	—	—	7:44	—	—	7:45	—	—	7:46	—	—	7:47	—	—	7:49	—	—	7:50	—	—	7:51	—	—	7:52	—	—	7:52	—	—	7:53	—	—	7:54	—	—
	Today's sea temperature in Block Island (Old Harbor) is 7.5 °C (Statistics for 01 May 1981-2005 – mean: 8.8 max: 10.1 min: 7.0°C)