Massachusetts tide station

Chatham Harbor, Aunt Lydias Cove tide times

Today, Sunday, October 18, 2026: high tide at 6:27 AM (4.0 ft) and 6:22 PM (4.7 ft); low tide at 12:30 AM (0.3 ft) and 12:18 PM (0.7 ft). Water temperature 59.7 F at buoy 44020 (22 mi away).

NOAA station 8447435 · Reference station · MLLW datum · times in EDT · sunrise 6:56 AM, sunset 5:54 PM · first quarter (51% lit)

Low tide▼

12:30AM

0.3FT MLLW

low

High tide▲

6:27AM

4.0FT MLLW

high

Low tide▼

12:18PM

0.7FT MLLW

low

High tide▲

6:22PM

4.7FT 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 6:27 AM (4.0 ft).

First Quarter 51% litSunrise 6:56 AMSunset 5:54 PMDaylight 10h 58mEDT

High tide at Chatham Harbor, Aunt Lydias Cove, Massachusetts on October 18, 2026 is at 6:27 AM (4.0 ft above MLLW) and 6:22 PM (4.7 ft above MLLW).
Low tide at Chatham Harbor, Aunt Lydias Cove on October 18, 2026 is at 12:30 AM (0.3 ft) and 12:18 PM (0.7 ft).
Today's tidal range at Chatham Harbor, Aunt Lydias Cove is 4.3 ft (highest high 4.7 ft, lowest low 0.3 ft).
The nearest NOAA water temperature to Chatham Harbor, Aunt Lydias Cove is 59.7 F at buoy 44020 (22 mi away), as of October 18, 2026.
Sunrise 6:56 AM, sunset 5:54 PM (EDT); moon first quarter, 51% illuminated.
Predictions are NOAA CO-OPS tide predictions for station 8447435 (harmonic reference station), heights above MLLW.

Next 7 days at Chatham Harbor, Aunt Lydias Cove

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Oct 18today	12:30 AM0.3 ft	6:27 AM4.0 ft	12:18 PM0.7 ft	6:22 PM4.7 ft	6:56 AM	5:54 PM	51%
Mon Oct 19	1:22 AM0.3 ft	7:22 AM3.9 ft	1:15 PM0.7 ft	7:21 PM4.6 ft	6:57 AM	5:53 PM	61%
Tue Oct 20	2:14 AM0.3 ft	8:14 AM4.1 ft	2:13 PM0.6 ft	8:18 PM4.6 ft	6:58 AM	5:51 PM	71%
Wed Oct 21	3:02 AM0.2 ft	9:02 AM4.3 ft	3:10 PM0.4 ft	9:11 PM4.7 ft	6:59 AM	5:50 PM	80%
Thu Oct 22	3:49 AM0.2 ft	9:46 AM4.6 ft	4:04 PM0.3 ft	10:00 PM4.8 ft	7:00 AM	5:48 PM	88%
Fri Oct 23	4:33 AM0.1 ft	10:27 AM5.0 ft	4:56 PM0.1 ft	10:47 PM5.0 ft	7:01 AM	5:47 PM	94%
Sat Oct 24	5:16 AM0.1 ft	11:05 AM5.4 ft	5:47 PM-0.1 ft	11:32 PM5.1 ft	7:03 AM	5:45 PM	98%

Water temperature near Chatham Harbor, Aunt Lydias Cove

59.7 F (15.4 C)

NDBC buoy 44020 (Nantucket Sound), 22 mi away, observed 09:00 UTC October 18, 2026

Water temperature is the nearest NOAA reading to Chatham Harbor, Aunt Lydias Cove, 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					6:37 AM	6:22 PM	72%
Fri Oct 2					6:38 AM	6:20 PM	62%
Sat Oct 3					6:39 AM	6:18 PM	52%
Sun Oct 4					6:40 AM	6:17 PM	41%
Mon Oct 5					6:41 AM	6:15 PM	31%
Tue Oct 6					6:42 AM	6:13 PM	22%
Wed Oct 7					6:43 AM	6:12 PM	14%
Thu Oct 8					6:44 AM	6:10 PM	7%
Fri Oct 9					6:46 AM	6:08 PM	3%
Sat Oct 10					6:47 AM	6:07 PM	0%
Sun Oct 11					6:48 AM	6:05 PM	0%
Mon Oct 12					6:49 AM	6:04 PM	2%
Tue Oct 13					6:50 AM	6:02 PM	7%
Wed Oct 14					6:51 AM	6:00 PM	13%
Thu Oct 15					6:52 AM	5:59 PM	21%
Fri Oct 16	4:42 AM4.3 ft	10:39 AM0.7 ft	4:34 PM5.0 ft	11:40 PM0.2 ft	6:53 AM	5:57 PM	30%
Sat Oct 17	5:33 AM4.1 ft	11:25 AM0.7 ft	5:25 PM4.8 ft		6:55 AM	5:56 PM	40%
Sun Oct 18today	12:30 AM0.3 ft	6:27 AM4.0 ft	12:18 PM0.7 ft	6:22 PM4.7 ft	6:56 AM	5:54 PM	51%
Mon Oct 19	1:22 AM0.3 ft	7:22 AM3.9 ft	1:15 PM0.7 ft	7:21 PM4.6 ft	6:57 AM	5:53 PM	61%
Tue Oct 20	2:14 AM0.3 ft	8:14 AM4.1 ft	2:13 PM0.6 ft	8:18 PM4.6 ft	6:58 AM	5:51 PM	71%
Wed Oct 21	3:02 AM0.2 ft	9:02 AM4.3 ft	3:10 PM0.4 ft	9:11 PM4.7 ft	6:59 AM	5:50 PM	80%
Thu Oct 22	3:49 AM0.2 ft	9:46 AM4.6 ft	4:04 PM0.3 ft	10:00 PM4.8 ft	7:00 AM	5:48 PM	88%
Fri Oct 23	4:33 AM0.1 ft	10:27 AM5.0 ft	4:56 PM0.1 ft	10:47 PM5.0 ft	7:01 AM	5:47 PM	94%
Sat Oct 24	5:16 AM0.1 ft	11:05 AM5.4 ft	5:47 PM-0.1 ft	11:32 PM5.1 ft	7:03 AM	5:45 PM	98%
Sun Oct 25	5:57 AM0.1 ft	11:44 AM5.8 ft	6:36 PM-0.3 ft		7:04 AM	5:44 PM	100%
Mon Oct 26	12:16 AM5.2 ft	6:39 AM0.1 ft	12:23 PM6.1 ft	7:25 PM-0.4 ft	7:05 AM	5:42 PM	99%
Tue Oct 27	1:00 AM5.2 ft	7:22 AM0.2 ft	1:04 PM6.4 ft	8:15 PM-0.4 ft	7:06 AM	5:41 PM	97%
Wed Oct 28	1:45 AM5.2 ft	8:08 AM0.2 ft	1:50 PM6.5 ft	9:07 PM-0.4 ft	7:07 AM	5:40 PM	92%
Thu Oct 29	2:35 AM5.1 ft	8:58 AM0.2 ft	2:40 PM6.4 ft	10:01 PM-0.3 ft	7:09 AM	5:38 PM	85%
Fri Oct 30	3:29 AM4.9 ft	9:52 AM0.3 ft	3:36 PM6.2 ft	10:57 PM-0.2 ft	7:10 AM	5:37 PM	77%
Sat Oct 31	4:28 AM4.8 ft	10:50 AM0.3 ft	4:37 PM5.9 ft	11:55 PM-0.1 ft	7:11 AM	5:36 PM	68%

November 2026 tide table

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Nov 1	4:31 AM4.7 ft	10:54 AM0.4 ft	4:44 PM5.6 ft	11:56 PM-0.0 ft	6:12 AM	4:34 PM	57%
Mon Nov 2	5:38 AM4.7 ft	12:02 PM0.4 ft	5:55 PM5.4 ft		6:13 AM	4:33 PM	46%
Tue Nov 3	12:57 AM-0.1 ft	6:44 AM4.8 ft	1:10 PM0.3 ft	7:04 PM5.3 ft	6:15 AM	4:32 PM	36%
Wed Nov 4	1:54 AM-0.1 ft	7:45 AM5.0 ft	2:14 PM0.1 ft	8:08 PM5.2 ft	6:16 AM	4:31 PM	26%
Thu Nov 5	2:48 AM-0.1 ft	8:41 AM5.3 ft	3:15 PM-0.1 ft	9:07 PM5.2 ft	6:17 AM	4:30 PM	17%
Fri Nov 6	3:38 AM-0.1 ft	9:32 AM5.5 ft	4:12 PM-0.2 ft	10:00 PM5.1 ft	6:18 AM	4:28 PM	10%
Sat Nov 7	4:26 AM-0.0 ft	10:18 AM5.7 ft	5:04 PM-0.4 ft	10:49 PM5.1 ft	6:20 AM	4:27 PM	5%
Sun Nov 8	5:10 AM0.1 ft	11:00 AM5.8 ft	5:52 PM-0.4 ft	11:34 PM5.0 ft	6:21 AM	4:26 PM	1%
Mon Nov 9	5:51 AM0.2 ft	11:40 AM5.9 ft	6:37 PM-0.4 ft		6:22 AM	4:25 PM	0%
Tue Nov 10	12:17 AM4.9 ft	6:31 AM0.4 ft	12:18 PM5.8 ft	7:20 PM-0.3 ft	6:23 AM	4:24 PM	1%
Wed Nov 11	1:00 AM4.8 ft	7:09 AM0.5 ft	12:56 PM5.7 ft	8:02 PM-0.1 ft	6:24 AM	4:23 PM	4%
Thu Nov 12	1:43 AM4.6 ft	7:48 AM0.6 ft	1:35 PM5.5 ft	8:43 PM-0.0 ft	6:26 AM	4:22 PM	10%
Fri Nov 13	2:26 AM4.4 ft	8:27 AM0.6 ft	2:15 PM5.3 ft	9:23 PM0.1 ft	6:27 AM	4:21 PM	17%
Sat Nov 14	3:11 AM4.3 ft	9:08 AM0.7 ft	2:58 PM5.1 ft	10:05 PM0.1 ft	6:28 AM	4:20 PM	25%
Sun Nov 15	3:56 AM4.1 ft	9:52 AM0.7 ft	3:45 PM4.9 ft	10:49 PM0.2 ft	6:29 AM	4:20 PM	35%
Mon Nov 16	4:43 AM4.1 ft	10:41 AM0.6 ft	4:35 PM4.7 ft	11:35 PM0.2 ft	6:30 AM	4:19 PM	45%
Tue Nov 17	5:33 AM4.1 ft	11:36 AM0.6 ft	5:30 PM4.6 ft		6:32 AM	4:18 PM	56%
Wed Nov 18	12:22 AM0.2 ft	6:22 AM4.2 ft	12:34 PM0.5 ft	6:27 PM4.5 ft	6:33 AM	4:17 PM	66%
Thu Nov 19	1:10 AM0.2 ft	7:09 AM4.5 ft	1:33 PM0.4 ft	7:24 PM4.5 ft	6:34 AM	4:16 PM	76%
Fri Nov 20	1:56 AM0.2 ft	7:54 AM4.8 ft	2:30 PM0.2 ft	8:18 PM4.6 ft	6:35 AM	4:16 PM	84%
Sat Nov 21	2:42 AM0.2 ft	8:39 AM5.2 ft	3:26 PM-0.0 ft	9:11 PM4.7 ft	6:36 AM	4:15 PM	91%
Sun Nov 22	3:29 AM0.2 ft	9:24 AM5.6 ft	4:21 PM-0.2 ft	10:01 PM4.8 ft	6:38 AM	4:14 PM	96%
Mon Nov 23	4:17 AM0.2 ft	10:09 AM6.1 ft	5:15 PM-0.4 ft	10:51 PM4.9 ft	6:39 AM	4:14 PM	99%
Tue Nov 24	5:06 AM0.2 ft	10:56 AM6.4 ft	6:07 PM-0.5 ft	11:39 PM5.0 ft	6:40 AM	4:13 PM	100%
Wed Nov 25	5:56 AM0.1 ft	11:43 AM6.6 ft	7:00 PM-0.5 ft		6:41 AM	4:13 PM	98%
Thu Nov 26	12:28 AM5.1 ft	6:48 AM0.1 ft	12:33 PM6.6 ft	7:53 PM-0.5 ft	6:42 AM	4:12 PM	95%
Fri Nov 27	1:20 AM5.0 ft	7:44 AM0.1 ft	1:27 PM6.5 ft	8:47 PM-0.5 ft	6:43 AM	4:12 PM	89%
Sat Nov 28	2:16 AM5.0 ft	8:41 AM0.2 ft	2:25 PM6.3 ft	9:41 PM-0.4 ft	6:44 AM	4:11 PM	81%
Sun Nov 29	3:15 AM4.9 ft	9:40 AM0.2 ft	3:27 PM5.9 ft	10:36 PM-0.3 ft	6:45 AM	4:11 PM	73%
Mon Nov 30	4:17 AM4.9 ft	10:43 AM0.2 ft	4:31 PM5.6 ft	11:32 PM-0.2 ft	6:47 AM	4:11 PM	63%

Tidal datums at Chatham Harbor, Aunt Lydias Cove

Heights on this page are above mean lower low water (MLLW), the chart datum. NOAA's accepted datums for station 8447435, in feet above MLLW:

MHHW

9.36 ft

Mean higher high water

MHW

8.99 ft

Mean high water

MSL

6.74 ft

Mean sea level

MLW

4.35 ft

Mean low water

4.64 ft

Mean range

5.18 ft

Diurnal range

Highest observed water level: 13.64 ft above MLLW on January 3, 2014. Tidal datum epoch 1983-2001.

Nearby tide stations

Chatham, Stage Harbor1.7 mi · next high 6:21 AM
Pleasant Bay3.7 mi · next high 7:54 AM
Saquatucket Harbor5.6 mi · next high 6:30 AM
Wychmere Harbor6.1 mi · next high 6:18 AM
Dennisport8.7 mi · next high 6:29 AM
Sesuit Harbor, East Dennis11 mi · next high 5:36 PM

Questions

What time is high tide at Chatham Harbor, Aunt Lydias Cove today?

High tide at Chatham Harbor, Aunt Lydias Cove, Massachusetts on Sunday, October 18, 2026 is at 6:27 AM (4.0 ft above MLLW) and 6:22 PM (4.7 ft above MLLW), NOAA prediction, local time.

What time is low tide at Chatham Harbor, Aunt Lydias Cove today?

Low tide at Chatham Harbor, Aunt Lydias Cove on Sunday, October 18, 2026 is at 12:30 AM (0.3 ft) and 12:18 PM (0.7 ft).

What is the water temperature at Chatham Harbor, Aunt Lydias Cove?

The nearest NOAA water-temperature reading to Chatham Harbor, Aunt Lydias Cove is 59.7 F at buoy 44020 (22 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 8447435.