Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

52°
H -°
L 51°
NNE
8mph
Low tide
5:16 am
Photo Credits

Tides Today & Tomorrow in Squamscott River, Great Bay, NH

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 2h 21m at 5:16 am (1.0 ft)
Next high tide : 11:06 am (6.0 ft)
Sunset today : 6:41 pm
Sunrise tomorrow : 6:31 am
Moon phase : Waxing Gibbous (83% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Mar 1935

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri9:197.310:086.43:190.84:140.06:205:31Waning Crescent1Fri
2Sat10:247.611:066.94:260.45:13-0.46:195:33Waning Crescent2Sat
3Sun11:238.111:597.55:26-0.16:06-0.86:175:34New Moon3Sun
4Mon12:178.46:22-0.66:57-1.16:155:35New Moon4Mon
5Tue12:497.91:108.57:16-1.17:45-1.36:145:36New Moon5Tue
6Wed1:388.32:028.48:08-1.38:33-1.26:125:37Waxing Crescent6Wed
7Thu2:258.52:538.29:00-1.49:20-1.06:105:39Waxing Crescent7Thu
8Fri3:138.43:447.89:51-1.210:08-0.66:095:40Waxing Crescent8Fri
9Sat4:028.14:377.310:44-0.810:59-0.16:075:41Waxing Crescent9Sat
10Sun4:547.75:356.711:40-0.411:530.56:055:42First Quarter10Sun
11Mon5:507.36:366.312:410.16:035:44First Quarter11Mon
12Tue6:526.97:416.012:530.91:450.56:025:45First Quarter12Tue
13Wed7:576.68:475.81:571.22:530.76:005:46First Quarter13Wed
14Thu9:036.59:495.93:061.33:580.75:585:47Waxing Gibbous14Thu
15Fri10:046.610:436.14:111.34:540.65:565:48Waxing Gibbous15Fri
16Sat10:566.711:286.35:061.15:410.55:555:50Waxing Gibbous16Sat
17Sun11:416.85:520.86:200.45:535:51Waxing Gibbous17Sun
18Mon12:086.612:216.96:330.66:560.35:515:52Full Moon18Mon
19Tue12:446.812:597.07:100.47:280.35:495:53Full Moon19Tue
20Wed1:177.01:357.07:450.27:580.35:485:54Full Moon20Wed
21Thu1:487.12:096.98:180.18:290.35:465:55Full Moon21Thu
22Fri2:197.22:436.88:520.09:010.45:445:57Waning Gibbous22Fri
23Sat2:507.23:186.79:270.09:360.55:425:58Waning Gibbous23Sat
24Sun3:237.23:566.510:060.110:150.75:405:59Waning Gibbous24Sun
25Mon4:027.24:396.310:490.110:590.85:396:00Waning Gibbous25Mon
26Tue4:487.15:306.111:390.311:500.95:376:01Third Quarter26Tue
27Wed5:427.16:296.012:350.45:356:03Third Quarter27Wed
28Thu6:437.07:346.112:481.01:370.45:336:04Third Quarter28Thu
29Fri7:507.18:416.31:520.92:430.35:326:05Waning Crescent29Fri
30Sat9:007.39:466.83:020.73:490.05:306:06Waning Crescent30Sat
31Sun10:067.510:437.34:100.34:48-0.35:286:07Waning Crescent31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

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Common Questions About Squamscott River, Great Bay, NH Tides

Collapse All
Is this week a spring tide or neap tide in Squamscott River, Great Bay, NH?

Squamscott River, Great Bay, NH is currently in a spring phase. Tonight's moon is 83% 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 Squamscott River, Great Bay, NH 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 Squamscott River, Great Bay, NH?

Tide predictions for Squamscott River, Great Bay, NH 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 Squamscott River, Great Bay, NH?

Tide data for Squamscott River, Great Bay, NH is sourced from NOAA Station #8422687. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8422687.

What is the moon phase in Squamscott River, Great Bay, NH tonight?

Tonight the moon over Squamscott River, Great Bay, NH is Waxing Gibbous (83% illuminated). This places Squamscott River, Great Bay, NH 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

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