Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

69°
H 81°
L 58°
WSW
4mph
High tide
11:46 am
Photo Credits

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

TIDE TIMES for Monday, August 24, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 5:58 pm (1.4 ft)
Next high tide : in 3h 09m at 11:46 am (5.9 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 5:59 am
Moon phase : Waxing Gibbous (88% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Oct 2059

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:396.210:536.94:460.65:001.26:416:25Waning Crescent1Wed
2Thu11:326.411:457.05:430.65:551.16:426:23Waning Crescent2Thu
3Fri12:186.66:300.56:420.86:436:21Waning Crescent3Fri
4Sat12:317.112:586.87:110.47:240.66:446:19New Moon4Sat
5Sun1:127.11:357.07:470.48:020.56:456:18New Moon5Sun
6Mon1:507.12:097.18:200.48:370.46:466:16New Moon6Mon
7Tue2:277.02:407.28:510.59:110.36:486:14New Moon7Tue
8Wed3:026.93:117.29:220.69:450.36:496:13New Moon8Wed
9Thu3:366.83:427.29:540.710:200.36:506:11Waxing Crescent9Thu
10Fri4:116.64:157.210:280.810:580.36:516:09Waxing Crescent10Fri
11Sat4:496.44:537.111:061.011:400.46:526:07Waxing Crescent11Sat
12Sun5:326.25:377.011:491.16:536:06First Quarter12Sun
13Mon6:226.16:297.012:290.512:391.36:556:04First Quarter13Mon
14Tue7:196.07:297.01:240.61:361.36:566:02First Quarter14Tue
15Wed8:216.18:347.02:240.62:381.26:576:01First Quarter15Wed
16Thu9:266.39:417.23:270.53:441.06:585:59Waxing Gibbous16Thu
17Fri10:296.710:477.54:310.24:510.56:595:58Waxing Gibbous17Fri
18Sat11:267.311:467.95:30-0.15:530.07:015:56Waxing Gibbous18Sat
19Sun12:177.86:24-0.56:49-0.57:025:54Full Moon19Sun
20Mon12:418.11:078.37:14-0.77:42-1.07:035:53Full Moon20Mon
21Tue1:358.21:558.68:03-0.88:34-1.27:045:51Full Moon21Tue
22Wed2:278.12:438.78:51-0.79:25-1.37:055:50Full Moon22Wed
23Thu3:197.93:328.69:40-0.410:16-1.17:075:48Waning Gibbous23Thu
24Fri4:117.64:218.310:29-0.111:09-0.87:085:47Waning Gibbous24Fri
25Sat5:047.25:137.911:200.47:095:45Waning Gibbous25Sat
26Sun6:016.86:107.412:04-0.312:160.87:105:44Third Quarter26Sun
27Mon7:026.47:127.01:030.11:161.17:125:42Third Quarter27Mon
28Tue8:046.28:156.72:060.52:201.47:135:41Third Quarter28Tue
29Wed9:056.29:186.63:080.73:251.47:145:39Third Quarter29Wed
30Thu10:036.210:186.64:090.84:281.37:155:38Waning Crescent30Thu
31Fri10:566.411:116.65:040.85:251.17:175:37Waning Crescent31Fri
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 88% 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 (88% 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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