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

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 1h 52m at 3:48 pm (1.3 ft)
Next high tide : 9:48 pm (6.8 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:25 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Oct 1992

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:317.15:437.611:490.46:416:24First Quarter1Thu
2Fri6:286.76:417.212:320.012:450.86:426:23First Quarter2Fri
3Sat7:286.47:416.91:310.41:441.16:436:21First Quarter3Sat
4Sun8:286.28:436.72:320.72:471.36:446:19First Quarter4Sun
5Mon9:286.19:436.63:340.83:501.36:466:17Waxing Gibbous5Mon
6Tue10:246.210:406.74:330.94:501.26:476:16Waxing Gibbous6Tue
7Wed11:146.411:316.75:250.85:431.06:486:14Waxing Gibbous7Wed
8Thu11:586.76:090.76:280.86:496:12Waxing Gibbous8Thu
9Fri12:156.812:376.96:480.67:080.56:506:10Waxing Gibbous9Fri
10Sat12:566.91:137.17:230.67:450.36:516:09Full Moon10Sat
11Sun1:357.01:477.37:560.58:210.26:536:07Full Moon11Sun
12Mon2:127.02:207.48:300.58:570.06:546:05Full Moon12Mon
13Tue2:496.92:547.59:040.59:330.06:556:04Full Moon13Tue
14Wed3:256.83:297.59:400.610:120.06:566:02Waning Gibbous14Wed
15Thu4:046.74:087.510:190.610:540.06:576:00Waning Gibbous15Thu
16Fri4:456.64:527.511:030.711:410.16:585:59Waning Gibbous16Fri
17Sat5:336.55:437.411:520.87:005:57Third Quarter17Sat
18Sun6:286.46:417.312:340.212:470.97:015:56Third Quarter18Sun
19Mon7:296.57:447.21:330.31:490.97:025:54Third Quarter19Mon
20Tue8:326.68:517.32:340.22:540.77:035:52Third Quarter20Tue
21Wed9:366.99:587.43:360.24:020.57:055:51Waning Crescent21Wed
22Thu10:367.311:027.54:380.05:080.07:065:49Waning Crescent22Thu
23Fri11:327.85:36-0.26:08-0.47:075:48Waning Crescent23Fri
24Sat12:017.712:238.26:30-0.47:02-0.87:085:46New Moon24Sat
25Sun12:557.812:138.46:20-0.46:54-1.06:104:45New Moon25Sun
26Mon12:477.81:018.57:09-0.47:44-1.16:114:43New Moon26Mon
27Tue1:387.71:488.47:57-0.28:34-1.06:124:42Waxing Crescent27Tue
28Wed2:287.52:368.28:440.09:22-0.76:134:41Waxing Crescent28Wed
29Thu3:177.23:237.99:320.310:11-0.36:154:39Waxing Crescent29Thu
30Fri4:066.94:137.510:210.711:030.16:164:38Waxing Crescent30Fri
31Sat4:596.65:077.111:131.011:570.46:174:36First Quarter31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

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What time does the tide turn (slack tide) in Squamscott River, Great Bay, NH today?

Slack tide in Squamscott River, Great Bay, NH is approximately 6:48 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 Squamscott River, Great Bay, NH?

Squamscott River, Great Bay, NH is currently in a transitional phase. Tonight's moon is 71% 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 Gibbous (71% 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