Boston Sea Conditions and Tide Table

Boston 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 07:39 PM.

	Days 1–4 Weather Summary Heavy rain (total 29mm), heaviest during Sat afternoon. Very warm air temperatures (max 30°C on Thu afternoon, min 16°C on Sat afternoon). Wind will be generally light.										Days 5–7 Weather Summary Heavy rain (total 26mm), heaviest during Sat night. Warm air temperatures (max 26°C on Mon afternoon, min 14°C on Sat night). Wind will be generally light.									Days 8–10 Weather Summary Moderate rain (total 16mm), heaviest on Thu morning. Warm (max 27°C on Wed afternoon, min 17°C on Tue night). Wind will be generally light.									Days 11–13 Weather Summary Light rain (total 2mm), mostly falling on Mon afternoon. Warm (max 29°C on Mon afternoon, min 19°C on Fri night). Wind will be generally light.									Days 14–17 Weather Summary Light rain (total 3mm), mostly falling on Mon night. Warm (max 23°C on Fri afternoon, min 14°C on Wed morning). Wind will be generally light.
		Thursday 20			Friday 21			Saturday 22			Sunday 23			Monday 24			Tuesday 25			Wednesday 26			Thursday 27			Friday 28			Saturday 29			Sunday 30			Monday 31			Tuesday 1			Wednesday 2			Thursday 3			Fri 4
	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	AM
Wave Height Map See all maps
High Tide	5:04PM2.93m	5:40AM2.55m		5:57PM2.83m	6:39AM2.44m		6:53PM2.77m	7:39AM2.39m		7:51PM2.76m	8:38AM2.40m		8:47PM2.81m	9:31AM2.47m		9:39PM2.89m	10:18AM2.57m		10:25PM2.98m	11:00AM2.69m		11:08PM3.06m		11:39AM2.81m	11:47PM3.12m		12:15PM2.93m	00:26AM3.16m		12:51PM3.04m	1:06AM3.17m		1:27PM3.13m	1:46AM3.14m		2:06PM3.20m	2:30AM3.08m		2:47PM3.24m	3:16AM2.98m		3:33PM3.24m
Low Tide	11:26PM0.36m		11:37AM0.58m	00:24AM0.46m		12:32PM0.68m	1:24AM0.51m		1:29PM0.72m	2:24AM0.49m		2:26PM0.69m	3:18AM0.43m		3:19PM0.62m	4:05AM0.34m		4:07PM0.51m	4:46AM0.23m		4:52PM0.39m		5:25AM0.14m		5:33PM0.27m	6:02AM0.05m		6:15PM0.16m	6:39AM-0.00m		6:55PM0.06m	7:17AM-0.03m		7:37PM-0.01m	7:56AM-0.02m		8:21PM-0.05m	8:38AM0.03m		9:07PM-0.05m	9:23AM0.12m
Wave Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	clear	some clouds	some clouds	some clouds	clear	clear	some clouds	light rain	heavy rain	heavy rain	light rain	cloudy	light rain	clear	clear	clear	clear	clear	clear	cloudy	clear	some clouds	heavy rain	light rain	some clouds	cloudy	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	clear	risk tstorm	risk tstorm	some clouds	cloudy	some clouds	cloudy	some clouds	clear	clear	clear	clear	clear
km/h	WSW	W	NW	WNW	NE	E	N	ESE	ENE	N	N	SSE	SW	W	W	WNW	WNW	W	WSW	WSW	WSW	SW	S	ESE	NE	NNE	NE	W	WNW	SE	WSW	WSW	SSE	SW	SW	SW	SW	NE	NE	NE	NE	ENE	NNE	ENE	ESE	SSW	S
mm	—	—	—	—	—	—	—	5	24	22	2	—	2	—	—	—	—	—	—	—	—	—	13	3	—	—	—	—	—	—	—	—	—	—	—	1	4	—	—	—	—	—	—	—	—	—	—
max °C	27	28	30	21	23	24	21	19	16	16	17	21	20	23	26	22	20	24	22	23	27	23	18	19	19	19	20	19	24	27	24	25	28	24	28	29	24	19	18	17	14	16	16	18	19	18	20
Moonrise	—	2:43	—	—	—	3:42	—	—	4:35	—	—	5:19	—	—	5:56	—	—	6:27	—	—	6:52	—	—	7:15	—	—	7:36	—	—	7:56	—	—	8:17	—	—	8:40	—	—	—	9:08	—	—	9:42	—	—	10:25	—
Moonset	10:44	—	—	11:22	—	—	—	12:07	—	—	1:00	—	—	2:00	—	—	3:05	—	—	4:11	—	—	5:19	—	—	6:26	—	—	7:34	—	—	8:42	—	—	9:53	—	—	11:06	—	—	12:22	—	—	1:38	—	—	2:50
	—	5:56	—	—	5:56	—	—	5:58	—	—	5:58	—	—	6:00	—	—	6:01	—	—	6:01	—	—	6:03	—	—	6:03	—	—	6:05	—	—	6:05	—	—	6:07	—	—	6:07	—	—	6:09	—	—	6:09	—	—	6:11
	7:39	—	7:37	—	—	7:36	—	—	7:35	—	—	7:32	—	—	7:31	—	—	7:30	—	—	7:28	—	—	7:27	—	—	7:24	—	—	7:23	—	—	7:22	—	—	7:20	—	—	7:19	—	—	7:16	—	—	7:15	—	—
	Today's sea temperature in Boston is 19.7° C (Statistics for 19 Aug 1981-2005 – mean: 20.5 max: 22.1 min: 18.7°C)