Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 2h 18m at 8:21 pm (0.1 ft)
Next high tide (tomorrow) : 2:15 am (8.6 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:19 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - May 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:327.312:586.67:210.47:320.95:377:44Full Moon1Sun
2Mon1:147.61:426.68:050.28:130.95:357:45Full Moon2Mon
3Tue1:577.82:276.68:490.18:530.95:347:46Full Moon3Tue
4Wed2:408.03:126.69:330.09:361.05:337:48Waning Gibbous4Wed
5Thu3:278.14:016.610:210.010:241.05:327:49Waning Gibbous5Thu
6Fri4:168.14:536.511:130.111:191.05:307:50Waning Gibbous6Fri
7Sat5:108.05:496.512:080.15:297:51Third Quarter7Sat
8Sun6:077.96:466.612:181.01:040.15:287:52Third Quarter8Sun
9Mon7:067.77:446.81:190.92:010.15:277:53Third Quarter9Mon
10Tue8:067.68:447.02:210.82:580.15:257:54Third Quarter10Tue
11Wed9:077.49:427.33:220.53:520.05:247:55Waning Crescent11Wed
12Thu10:067.210:377.74:210.24:450.05:237:56Waning Crescent12Thu
13Fri11:027.111:277.95:170.05:340.15:227:57Waning Crescent13Fri
14Sat11:557.06:10-0.26:230.25:217:58New Moon14Sat
15Sun12:168.112:456.87:01-0.37:110.35:208:00New Moon15Sun
16Mon1:028.21:336.77:51-0.37:580.55:198:01New Moon16Mon
17Tue1:488.12:196.58:38-0.28:440.75:188:02New Moon17Tue
18Wed2:328.03:046.49:24-0.19:300.95:178:03Waxing Crescent18Wed
19Thu3:177.83:496.310:110.210:181.15:168:04Waxing Crescent19Thu
20Fri4:037.64:366.110:590.411:081.25:158:05Waxing Crescent20Fri
21Sat4:517.45:256.111:490.65:148:06First Quarter21Sat
22Sun5:427.26:166.112:001.412:390.75:148:07First Quarter22Sun
23Mon6:336.97:086.112:531.41:300.95:138:08First Quarter23Mon
24Tue7:256.77:596.31:481.42:200.95:128:08First Quarter24Tue
25Wed8:196.58:516.52:431.43:111.05:118:09First Quarter25Wed
26Thu9:136.49:426.73:381.24:001.05:118:10Waxing Gibbous26Thu
27Fri10:056.310:307.04:301.04:461.05:108:11Waxing Gibbous27Fri
28Sat10:556.311:157.35:190.85:311.05:098:12Waxing Gibbous28Sat
29Sun11:426.36:060.66:151.05:098:13Full Moon29Sun
30Mon12:007.612:296.46:540.36:591.05:088:14Full Moon30Mon
31Tue12:457.91:176.57:410.17:440.95:088:15Full Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8440369)

Common Questions About Merrimacport, MA Tides

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

Slack tide in Merrimacport, MA is approximately 11:18 pm — 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 2% 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 is the moon phase in Merrimacport, MA tonight?

Tonight the moon over Merrimacport, MA is New Moon (2% illuminated). This places Merrimacport, MA in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

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