Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Monday, July 13, 2026
The tide is currently rising in Merrimacport, MA.

Next low tide (tomorrow) : 7:22 am (-0.5 ft)
Next high tide (tomorrow) : in 5h 06m at 12:29 am (8.6 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:17 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jul 2026

< Jun 2026

Print this Tide Chart

Aug 2026 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Wed	1:48	7.5	2:17	6.1	8:44	0.5	8:47	1.2	5:09	8:26		1	Wed
2	Thu	2:31	7.5	2:59	6.2	9:26	0.5	9:29	1.2	5:09	8:26		2	Thu
3	Fri	3:13	7.6	3:43	6.4	10:08	0.5	10:13	1.2	5:10	8:25		3	Fri
4	Sat	3:57	7.5	4:28	6.6	10:51	0.5	11:00	1.1	5:11	8:25		4	Sat
5	Sun	4:44	7.4	5:16	6.8	11:35	0.5	11:51	1.1	5:11	8:25		5	Sun
6	Mon	5:33	7.3	6:06	7.0			12:21	0.5	5:12	8:25		6	Mon
7	Tue	6:25	7.1	6:56	7.3	12:44	1.0	1:08	0.6	5:13	8:24		7	Tue
8	Wed	7:19	6.9	7:49	7.5	1:41	0.8	1:59	0.7	5:13	8:24		8	Wed
9	Thu	8:15	6.7	8:44	7.7	2:40	0.6	2:54	0.7	5:14	8:23		9	Thu
10	Fri	9:15	6.5	9:41	8.0	3:39	0.4	3:49	0.7	5:15	8:23		10	Fri
11	Sat	10:14	6.5	10:38	8.3	4:37	0.1	4:45	0.6	5:16	8:23		11	Sat
12	Sun	11:12	6.5	11:34	8.5	5:33	-0.2	5:39	0.5	5:16	8:22		12	Sun
13	Mon			12:08	6.6	6:28	-0.4	6:34	0.3	5:17	8:21		13	Mon
14	Tue	12:29	8.6	1:03	6.7	7:22	-0.5	7:28	0.2	5:18	8:21		14	Tue
15	Wed	1:23	8.6	1:56	6.8	8:13	-0.6	8:21	0.1	5:19	8:20		15	Wed
16	Thu	2:15	8.6	2:47	7.0	9:03	-0.6	9:13	0.0	5:20	8:20		16	Thu
17	Fri	3:05	8.4	3:36	7.1	9:51	-0.5	10:06	0.1	5:21	8:19		17	Fri
18	Sat	3:54	8.0	4:26	7.1	10:40	-0.3	10:59	0.3	5:21	8:18		18	Sat
19	Sun	4:45	7.6	5:16	7.2	11:29	-0.1	11:53	0.4	5:22	8:17		19	Sun
20	Mon	5:35	7.2	6:06	7.2			12:17	0.2	5:23	8:17		20	Mon
21	Tue	6:26	6.7	6:55	7.1	12:47	0.6	1:07	0.5	5:24	8:16		21	Tue
22	Wed	7:18	6.3	7:46	7.1	1:41	0.7	1:57	0.8	5:25	8:15		22	Wed
23	Thu	8:11	6.0	8:38	7.0	2:36	0.8	2:50	1.0	5:26	8:14		23	Thu
24	Fri	9:06	5.8	9:31	7.0	3:31	0.9	3:42	1.2	5:27	8:13		24	Fri
25	Sat	10:00	5.7	10:22	7.0	4:24	0.9	4:33	1.2	5:28	8:12		25	Sat
26	Sun	10:51	5.7	11:11	7.1	5:15	0.8	5:22	1.2	5:29	8:11		26	Sun
27	Mon	11:39	5.7	11:57	7.2	6:04	0.7	6:09	1.2	5:30	8:10		27	Mon
28	Tue			12:24	5.8	6:50	0.7	6:55	1.1	5:31	8:09		28	Tue
29	Wed	12:41	7.3	1:08	6.0	7:35	0.6	7:40	1.0	5:32	8:08		29	Wed
30	Thu	1:24	7.4	1:51	6.3	8:17	0.4	8:23	0.9	5:33	8:07		30	Thu
31	Fri	2:07	7.5	2:33	6.5	8:58	0.4	9:05	0.8	5:34	8:06		31	Fri
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (8440369)

www.USHarbors.com

The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

When is the lowest tide this week in Merrimacport, MA?

The lowest tide this week in Merrimacport, MA is -0.6 ft on Wednesday, Jul 15 at 8:13 am.

When is the highest tide this week in Merrimacport, MA?

The highest tide this week in Merrimacport, MA is 8.6 ft on Wednesday, Jul 15 at 1:23 am — worth noting for launching your boat and being alert for possible high tide flooding.

What time does the tide turn (slack tide) in Merrimacport, MA today?

Slack tide in Merrimacport, MA is approximately 3:55 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Merrimacport, MA?

Merrimacport, MA is currently in a spring phase. Tonight's moon is 1% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Merrimacport, MA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Merrimacport, MA?

Tide predictions for Merrimacport, MA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Merrimacport, MA?

Tide data for Merrimacport, MA is sourced from NOAA Station #8440369. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8440369.

What time is high tide in Merrimacport, MA today?

High tides in Merrimacport, MA today: 12:08 pm (6.6 ft).

What time is low tide in Merrimacport, MA today?

Low tides in Merrimacport, MA today: 6:28 am (-0.4 ft), 6:34 pm (0.3 ft). The 6:28 am low of -0.4 ft is a minus tide — water below the MLLW reference datum, which can expose tidepools, mudflats, and shellfish beds not normally accessible.

What is the tidal range in Merrimacport, MA today?

Today's tidal range in Merrimacport, MA is 6.9 ft — the difference between the day's highest and lowest water level. This month's average daily range is about 7.2 ft, so today's swing is typical.

What is the moon phase in Merrimacport, MA tonight?

Tonight the moon over Merrimacport, MA is New Moon (1% illuminated). This places Merrimacport, MA in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

What type of tides does Merrimacport, MA have — semi-diurnal, diurnal, or mixed?

Merrimacport, MA has mixed tides — two high tides and two low tides per day with noticeably different heights — common on the U.S. West Coast.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA

In The Zone: The Sabre 51 Salon Express

By US Harbors When Sabre Yachts completed construction of hull number 200 of its 48 Salon Express model, more than half the crew who built it had also worked on hull number one. The average tenure on that line was 12 years, and they produced a yacht that proved to… Learn More