Massachusetts tide station

Boston tide times

Today, Sunday, October 18, 2026: high tide at 5:26 AM (8.0 ft) and 5:33 PM (8.9 ft); low tide at 11:19 AM (2.5 ft). Water temperature 57.4 F at buoy 44013 (20 mi away).

NOAA station 8443970 · Reference station · MLLW datum · times in EDT · sunrise 7:01 AM, sunset 5:58 PM · first quarter (51% lit)

High tide▲

5:26AM

8.0FT MLLW

high

Low tide▼

11:19AM

2.5FT MLLW

low

High tide▲

5:33PM

8.9FT MLLW

high

predicted height above MLLWnightnow (build time; your browser updates it)

As of 5:20 AM the tide is rising toward high tide at 5:26 AM (8.0 ft).

First Quarter 51% litSunrise 7:01 AMSunset 5:58 PMDaylight 10h 56mEDT

High tide at Boston, Massachusetts on October 18, 2026 is at 5:26 AM (8.0 ft above MLLW) and 5:33 PM (8.9 ft above MLLW).
Low tide at Boston on October 18, 2026 is at 11:19 AM (2.5 ft).
Today's tidal range at Boston is 6.4 ft (highest high 8.9 ft, lowest low 2.5 ft).
The nearest NOAA water temperature to Boston is 57.4 F at buoy 44013 (20 mi away), as of October 18, 2026.
Sunrise 7:01 AM, sunset 5:58 PM (EDT); moon first quarter, 51% illuminated.
Predictions are NOAA CO-OPS tide predictions for station 8443970 (harmonic reference station), heights above MLLW.

Next 7 days at Boston

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Oct 18today	5:26 AM8.0 ft	11:19 AM2.5 ft	5:33 PM8.9 ft		7:01 AM	5:58 PM	51%
Mon Oct 19	12:02 AM1.7 ft	6:21 AM8.0 ft	12:15 PM2.5 ft	6:29 PM8.9 ft	7:02 AM	5:56 PM	61%
Tue Oct 20	12:55 AM1.7 ft	7:15 AM8.2 ft	1:11 PM2.3 ft	7:25 PM8.9 ft	7:03 AM	5:55 PM	71%
Wed Oct 21	1:46 AM1.5 ft	8:06 AM8.6 ft	2:05 PM1.9 ft	8:19 PM9.1 ft	7:04 AM	5:53 PM	80%
Thu Oct 22	2:35 AM1.2 ft	8:53 AM9.0 ft	2:57 PM1.4 ft	9:09 PM9.4 ft	7:06 AM	5:52 PM	88%
Fri Oct 23	3:21 AM0.9 ft	9:36 AM9.6 ft	3:45 PM0.8 ft	9:56 PM9.7 ft	7:07 AM	5:50 PM	94%
Sat Oct 24	4:04 AM0.6 ft	10:16 AM10.2 ft	4:31 PM0.1 ft	10:40 PM10.0 ft	7:08 AM	5:49 PM	98%

Water temperature near Boston

57.4 F (14.1 C)

NDBC buoy 44013 (BOSTON 16 NM East of Boston, MA), 20 mi away, observed 08:50 UTC October 18, 2026

Water temperature is the nearest NOAA reading to Boston, not a measurement at the tide gauge itself (this station has no water-temperature sensor). See water temperature by state for every sensor and buoy.

Tide tables

High (▲) and low (▼) tides in EDT with sunrise, sunset and moon illumination. CSV of today's tides for every Massachusetts station.

October 2026 tide table

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Thu Oct 1					6:42 AM	6:26 PM	72%
Fri Oct 2					6:43 AM	6:24 PM	62%
Sat Oct 3					6:44 AM	6:23 PM	52%
Sun Oct 4					6:45 AM	6:21 PM	41%
Mon Oct 5					6:46 AM	6:19 PM	31%
Tue Oct 6					6:47 AM	6:17 PM	22%
Wed Oct 7					6:48 AM	6:16 PM	14%
Thu Oct 8					6:49 AM	6:14 PM	7%
Fri Oct 9					6:50 AM	6:12 PM	3%
Sat Oct 10					6:52 AM	6:11 PM	0%
Sun Oct 11					6:53 AM	6:09 PM	0%
Mon Oct 12					6:54 AM	6:07 PM	2%
Tue Oct 13					6:55 AM	6:06 PM	7%
Wed Oct 14					6:56 AM	6:04 PM	13%
Thu Oct 15					6:57 AM	6:02 PM	21%
Fri Oct 16	3:41 AM8.4 ft	9:34 AM2.1 ft	3:46 PM9.4 ft	10:15 PM1.3 ft	6:59 AM	6:01 PM	30%
Sat Oct 17	4:31 AM8.1 ft	10:24 AM2.4 ft	4:37 PM9.1 ft	11:07 PM1.6 ft	7:00 AM	5:59 PM	40%
Sun Oct 18today	5:26 AM8.0 ft	11:19 AM2.5 ft	5:33 PM8.9 ft		7:01 AM	5:58 PM	51%
Mon Oct 19	12:02 AM1.7 ft	6:21 AM8.0 ft	12:15 PM2.5 ft	6:29 PM8.9 ft	7:02 AM	5:56 PM	61%
Tue Oct 20	12:55 AM1.7 ft	7:15 AM8.2 ft	1:11 PM2.3 ft	7:25 PM8.9 ft	7:03 AM	5:55 PM	71%
Wed Oct 21	1:46 AM1.5 ft	8:06 AM8.6 ft	2:05 PM1.9 ft	8:19 PM9.1 ft	7:04 AM	5:53 PM	80%
Thu Oct 22	2:35 AM1.2 ft	8:53 AM9.0 ft	2:57 PM1.4 ft	9:09 PM9.4 ft	7:06 AM	5:52 PM	88%
Fri Oct 23	3:21 AM0.9 ft	9:36 AM9.6 ft	3:45 PM0.8 ft	9:56 PM9.7 ft	7:07 AM	5:50 PM	94%
Sat Oct 24	4:04 AM0.6 ft	10:16 AM10.2 ft	4:31 PM0.1 ft	10:40 PM10.0 ft	7:08 AM	5:49 PM	98%
Sun Oct 25	4:47 AM0.3 ft	10:56 AM10.8 ft	5:16 PM-0.5 ft	11:25 PM10.2 ft	7:09 AM	5:47 PM	100%
Mon Oct 26	5:29 AM0.1 ft	11:37 AM11.2 ft	6:02 PM-0.9 ft		7:10 AM	5:46 PM	99%
Tue Oct 27	12:10 AM10.2 ft	6:13 AM-0.0 ft	12:21 PM11.5 ft	6:49 PM-1.1 ft	7:12 AM	5:44 PM	97%
Wed Oct 28	12:58 AM10.1 ft	6:59 AM0.0 ft	1:08 PM11.6 ft	7:38 PM-1.1 ft	7:13 AM	5:43 PM	92%
Thu Oct 29	1:48 AM9.9 ft	7:48 AM0.2 ft	1:58 PM11.5 ft	8:29 PM-0.9 ft	7:14 AM	5:42 PM	85%
Fri Oct 30	2:42 AM9.7 ft	8:40 AM0.5 ft	2:52 PM11.2 ft	9:24 PM-0.5 ft	7:15 AM	5:40 PM	77%
Sat Oct 31	3:39 AM9.4 ft	9:37 AM0.8 ft	3:50 PM10.8 ft	10:23 PM-0.1 ft	7:17 AM	5:39 PM	68%

November 2026 tide table

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Nov 1	3:41 AM9.2 ft	9:39 AM1.1 ft	3:55 PM10.3 ft	10:26 PM0.2 ft	6:18 AM	4:38 PM	57%
Mon Nov 2	4:47 AM9.1 ft	10:46 AM1.3 ft	5:03 PM10.0 ft	11:29 PM0.4 ft	6:19 AM	4:36 PM	46%
Tue Nov 3	5:53 AM9.2 ft	11:53 AM1.2 ft	6:11 PM9.7 ft		6:20 AM	4:35 PM	36%
Wed Nov 4	12:31 AM0.5 ft	6:55 AM9.5 ft	12:59 PM1.0 ft	7:18 PM9.6 ft	6:22 AM	4:34 PM	26%
Thu Nov 5	1:30 AM0.6 ft	7:53 AM9.9 ft	2:01 PM0.7 ft	8:19 PM9.6 ft	6:23 AM	4:33 PM	17%
Fri Nov 6	2:24 AM0.6 ft	8:44 AM10.2 ft	2:57 PM0.3 ft	9:13 PM9.6 ft	6:24 AM	4:32 PM	10%
Sat Nov 7	3:13 AM0.6 ft	9:29 AM10.4 ft	3:46 PM0.0 ft	10:00 PM9.6 ft	6:25 AM	4:30 PM	5%
Sun Nov 8	3:57 AM0.7 ft	10:10 AM10.5 ft	4:30 PM-0.1 ft	10:44 PM9.5 ft	6:27 AM	4:29 PM	1%
Mon Nov 9	4:38 AM0.9 ft	10:49 AM10.5 ft	5:12 PM-0.1 ft	11:26 PM9.3 ft	6:28 AM	4:28 PM	0%
Tue Nov 10	5:18 AM1.1 ft	11:28 AM10.4 ft	5:53 PM0.0 ft		6:29 AM	4:27 PM	1%
Wed Nov 11	12:07 AM9.1 ft	5:58 AM1.3 ft	12:07 PM10.2 ft	6:34 PM0.2 ft	6:30 AM	4:26 PM	4%
Thu Nov 12	12:48 AM8.8 ft	6:39 AM1.5 ft	12:48 PM10.0 ft	7:15 PM0.5 ft	6:32 AM	4:25 PM	10%
Fri Nov 13	1:30 AM8.6 ft	7:20 AM1.8 ft	1:30 PM9.7 ft	7:57 PM0.8 ft	6:33 AM	4:24 PM	17%
Sat Nov 14	2:13 AM8.4 ft	8:04 AM2.0 ft	2:14 PM9.4 ft	8:42 PM1.1 ft	6:34 AM	4:23 PM	25%
Sun Nov 15	2:59 AM8.2 ft	8:51 AM2.2 ft	3:02 PM9.2 ft	9:30 PM1.3 ft	6:35 AM	4:22 PM	35%
Mon Nov 16	3:48 AM8.2 ft	9:43 AM2.3 ft	3:53 PM9.0 ft	10:19 PM1.4 ft	6:37 AM	4:21 PM	45%
Tue Nov 17	4:39 AM8.3 ft	10:37 AM2.2 ft	4:46 PM8.9 ft	11:09 PM1.4 ft	6:38 AM	4:21 PM	56%
Wed Nov 18	5:28 AM8.5 ft	11:31 AM2.0 ft	5:40 PM8.8 ft	11:58 PM1.3 ft	6:39 AM	4:20 PM	66%
Thu Nov 19	6:16 AM8.9 ft	12:25 PM1.6 ft	6:34 PM8.9 ft		6:40 AM	4:19 PM	76%
Fri Nov 20	12:47 AM1.2 ft	7:04 AM9.3 ft	1:18 PM1.1 ft	7:27 PM9.1 ft	6:41 AM	4:18 PM	84%
Sat Nov 21	1:36 AM0.9 ft	7:50 AM9.9 ft	2:10 PM0.5 ft	8:19 PM9.3 ft	6:43 AM	4:18 PM	91%
Sun Nov 22	2:24 AM0.6 ft	8:36 AM10.5 ft	3:01 PM-0.2 ft	9:09 PM9.6 ft	6:44 AM	4:17 PM	96%
Mon Nov 23	3:12 AM0.3 ft	9:22 AM11.1 ft	3:50 PM-0.8 ft	9:58 PM9.8 ft	6:45 AM	4:16 PM	99%
Tue Nov 24	3:59 AM0.1 ft	10:09 AM11.5 ft	4:39 PM-1.2 ft	10:48 PM9.9 ft	6:46 AM	4:16 PM	100%
Wed Nov 25	4:48 AM-0.1 ft	10:57 AM11.8 ft	5:30 PM-1.4 ft	11:40 PM9.9 ft	6:47 AM	4:15 PM	98%
Thu Nov 26	5:38 AM-0.1 ft	11:49 AM11.8 ft	6:21 PM-1.4 ft		6:48 AM	4:15 PM	95%
Fri Nov 27	12:33 AM9.9 ft	6:31 AM-0.0 ft	12:43 PM11.7 ft	7:14 PM-1.2 ft	6:50 AM	4:14 PM	89%
Sat Nov 28	1:28 AM9.8 ft	7:26 AM0.2 ft	1:39 PM11.3 ft	8:09 PM-0.9 ft	6:51 AM	4:14 PM	81%
Sun Nov 29	2:26 AM9.6 ft	8:23 AM0.5 ft	2:38 PM10.8 ft	9:06 PM-0.5 ft	6:52 AM	4:13 PM	73%
Mon Nov 30	3:26 AM9.5 ft	9:25 AM0.7 ft	3:41 PM10.3 ft	10:06 PM-0.1 ft	6:53 AM	4:13 PM	63%

Tidal datums at Boston

Heights on this page are above mean lower low water (MLLW), the chart datum. NOAA's accepted datums for station 8443970, in feet above MLLW:

MHHW

13.80 ft

Mean higher high water

MHW

13.35 ft

Mean high water

MSL

8.73 ft

Mean sea level

MLW

3.86 ft

Mean low water

9.49 ft

Mean range

10.27 ft

Diurnal range

Highest observed water level: 18.69 ft above MLLW on January 4, 2018. Tidal datum epoch 1983-2001.

Nearby tide stations

Charlestown, Charles River entrance1.3 mi · next high 5:26 AM
Chelsea St. Bridge, Chelsea River2.7 mi · next high 5:32 PM
Amelia Earhart Dam, Mystic River3.1 mi · next high 5:28 PM
Moon Head4.3 mi · next high 5:27 AM
Deer Island (south end)4.6 mi · next high 5:27 AM
Neponset, Neponset River4.8 mi · next high 5:24 AM

Questions

What time is high tide at Boston today?

High tide at Boston, Massachusetts on Sunday, October 18, 2026 is at 5:26 AM (8.0 ft above MLLW) and 5:33 PM (8.9 ft above MLLW), NOAA prediction, local time.

What time is low tide at Boston today?

Low tide at Boston on Sunday, October 18, 2026 is at 11:19 AM (2.5 ft).

What is the water temperature at Boston?

The nearest NOAA water-temperature reading to Boston is 57.4 F at buoy 44013 (20 mi away), as of October 18, 2026.

Not for navigation. Predictions do not include weather; wind and pressure can move the real water level by a foot or more. Source: NOAA CO-OPS station 8443970.