Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Tuesday, July 14, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 3h 43m at 7:22 am (-0.5 ft)
Next high tide : 1:03 pm (6.7 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:18 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - May 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:486.89:226.43:081.03:390.65:367:45Waning Crescent1Mon
2Tue9:436.710:146.54:020.94:290.65:357:46Waning Crescent2Tue
3Wed10:346.611:006.74:530.85:160.65:347:47Waning Crescent3Wed
4Thu11:216.611:447.05:410.76:020.65:327:48Waning Crescent4Thu
5Fri12:066.76:280.56:460.75:317:49New Moon5Fri
6Sat12:267.212:496.77:130.47:290.75:307:50New Moon6Sat
7Sun1:077.41:326.77:570.38:100.85:297:51New Moon7Sun
8Mon1:497.62:156.88:400.28:510.85:277:53New Moon8Mon
9Tue2:307.72:586.89:230.29:320.95:267:54Waxing Crescent9Tue
10Wed3:137.83:436.810:070.210:151.05:257:55Waxing Crescent10Wed
11Thu3:587.94:306.810:530.211:031.05:247:56Waxing Crescent11Thu
12Fri4:477.95:226.811:430.211:551.05:237:57Waxing Crescent12Fri
13Sat5:397.86:156.912:360.25:227:58First Quarter13Sat
14Sun6:347.87:117.012:511.01:300.15:217:59First Quarter14Sun
15Mon7:317.78:077.11:500.82:260.15:208:00First Quarter15Mon
16Tue8:307.69:057.42:500.63:220.05:198:01Waxing Gibbous16Tue
17Wed9:297.610:027.73:490.34:16-0.25:188:02Waxing Gibbous17Wed
18Thu10:287.610:578.14:46-0.15:09-0.35:178:03Waxing Gibbous18Thu
19Fri11:237.611:498.45:40-0.46:00-0.35:168:04Waxing Gibbous19Fri
20Sat12:177.56:34-0.66:51-0.35:158:05Full Moon20Sat
21Sun12:408.61:097.47:26-0.87:41-0.25:148:06Full Moon21Sun
22Mon1:308.72:007.38:17-0.88:30-0.15:138:07Full Moon22Mon
23Tue2:188.62:497.29:07-0.79:190.15:138:08Waning Gibbous23Tue
24Wed3:068.43:377.09:56-0.610:080.35:128:09Waning Gibbous24Wed
25Thu3:548.24:266.810:46-0.311:000.65:118:10Waning Gibbous25Thu
26Fri4:437.95:176.711:37-0.111:530.85:118:11Waning Gibbous26Fri
27Sat5:347.56:086.612:280.25:108:12Third Quarter27Sat
28Sun6:257.27:006.512:461.01:190.45:098:13Third Quarter28Sun
29Mon7:177.07:526.51:401.12:110.55:098:13Third Quarter29Mon
30Tue8:116.78:446.62:351.13:020.75:088:14Third Quarter30Tue
31Wed9:056.69:366.83:291.03:530.75:088:15Waning Crescent31Wed
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 10:12 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 0% 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 (0% 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