Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

69°
H 70°
L 53°
SE
7mph
High tide
4:58 pm
Photo Credits

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

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 11:41 pm (0.2 ft)
Next high tide : in 1h 51m at 4:58 pm (7.3 ft)
Sunset today : 6:54 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Aug 1944

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:176.311:287.65:260.55:310.85:348:05Waxing Gibbous1Tue
2Wed12:106.66:190.16:240.55:358:04Waxing Gibbous2Wed
3Thu12:207.91:026.97:10-0.47:160.25:368:03Full Moon3Thu
4Fri1:128.31:537.28:00-0.78:09-0.25:378:01Full Moon4Fri
5Sat2:048.52:437.68:50-1.09:01-0.45:388:00Full Moon5Sat
6Sun2:568.73:347.89:40-1.29:54-0.65:397:59Waning Gibbous6Sun
7Mon3:488.64:258.010:30-1.210:49-0.65:407:57Waning Gibbous7Mon
8Tue4:428.45:178.011:20-1.011:45-0.55:417:56Waning Gibbous8Tue
9Wed5:388.16:128.012:14-0.75:427:55Third Quarter9Wed
10Thu6:387.77:107.812:45-0.31:09-0.45:437:53Third Quarter10Thu
11Fri7:407.28:097.71:47-0.12:070.05:457:52Third Quarter11Fri
12Sat8:456.99:107.52:510.03:080.45:467:51Third Quarter12Sat
13Sun9:516.610:127.53:580.24:120.75:477:49Waning Crescent13Sun
14Mon10:556.511:127.45:040.25:140.85:487:48Waning Crescent14Mon
15Tue11:536.66:030.16:110.85:497:46Waning Crescent15Tue
16Wed12:067.512:446.66:550.17:020.75:507:45Waning Crescent16Wed
17Thu12:547.51:316.77:420.07:470.75:517:43New Moon17Thu
18Fri1:397.52:136.88:240.08:290.65:527:42New Moon18Fri
19Sat2:207.52:526.89:030.09:080.65:537:40New Moon19Sat
20Sun2:587.43:286.89:380.19:450.65:547:38New Moon20Sun
21Mon3:357.34:026.910:110.210:210.65:557:37Waxing Crescent21Mon
22Tue4:117.24:366.810:440.310:580.75:577:35Waxing Crescent22Tue
23Wed4:477.05:116.811:180.511:370.75:587:34Waxing Crescent23Wed
24Thu5:266.75:486.811:550.65:597:32Waxing Crescent24Thu
25Fri6:096.56:296.812:190.812:350.86:007:30First Quarter25Fri
26Sat6:556.37:156.81:060.91:201.06:017:29First Quarter26Sat
27Sun7:476.18:056.91:560.92:091.16:027:27First Quarter27Sun
28Mon8:436.19:007.02:510.83:031.16:037:25First Quarter28Mon
29Tue9:436.210:007.23:500.74:021.06:047:24Waxing Gibbous29Tue
30Wed10:456.411:007.64:520.45:020.76:057:22Waxing Gibbous30Wed
31Thu11:426.811:578.05:500.06:010.36:067:20Waxing Gibbous31Thu
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 transitional phase. Tonight's moon is 21% 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 shifting between spring and neap.

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 Crescent (21% illuminated). This places Squamscott River, Great Bay, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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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