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

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 1h 42m at 6:53 am (-0.4 ft)
Next high tide : 12:44 pm (6.9 ft)
Sunset today : 7:52 pm
Sunrise tomorrow : 5:45 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Feb 1962

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:437.110:266.33:440.84:330.26:594:55Waning Crescent1Thu
2Fri10:387.511:196.74:410.55:27-0.36:574:56Waning Crescent2Fri
3Sat11:318.05:350.16:18-0.86:564:58New Moon3Sat
4Sun12:117.112:238.36:28-0.37:08-1.16:554:59New Moon4Sun
5Mon1:017.51:148.67:20-0.67:58-1.46:545:00New Moon5Mon
6Tue1:517.82:068.78:12-0.98:47-1.56:535:02Waxing Crescent6Tue
7Wed2:418.02:578.69:04-1.09:36-1.46:525:03Waxing Crescent7Wed
8Thu3:318.03:508.39:57-1.010:27-1.26:505:04Waxing Crescent8Thu
9Fri4:238.04:477.910:53-0.811:20-0.86:495:06Waxing Crescent9Fri
10Sat5:187.85:477.411:53-0.56:485:07First Quarter10Sat
11Sun6:177.66:506.912:17-0.312:56-0.26:475:08First Quarter11Sun
12Mon7:177.37:576.61:160.12:020.06:455:10First Quarter12Mon
13Tue8:217.29:046.42:200.53:110.26:445:11Waxing Gibbous13Tue
14Wed9:257.110:086.33:260.74:170.26:425:12Waxing Gibbous14Wed
15Thu10:257.111:056.44:300.75:150.16:415:14Waxing Gibbous15Thu
16Fri11:177.211:546.55:250.76:050.06:405:15Waxing Gibbous16Fri
17Sat12:047.36:130.66:50-0.16:385:16Full Moon17Sat
18Sun12:386.612:477.36:560.47:29-0.16:375:18Full Moon18Sun
19Mon1:186.71:267.37:360.48:05-0.16:355:19Full Moon19Mon
20Tue1:546.82:027.38:120.38:38-0.16:345:20Full Moon20Tue
21Wed2:286.82:377.28:470.39:100.06:325:22Waning Gibbous21Wed
22Thu3:016.83:117.09:210.39:420.16:315:23Waning Gibbous22Thu
23Fri3:336.83:466.89:570.410:150.36:295:24Waning Gibbous23Fri
24Sat4:066.84:246.610:350.510:520.56:285:25Waning Gibbous24Sat
25Sun4:436.75:066.411:170.511:330.76:265:27Waning Gibbous25Sun
26Mon5:256.75:546.212:040.66:245:28Third Quarter26Mon
27Tue6:126.76:476.012:190.812:560.66:235:29Third Quarter27Tue
28Wed7:056.77:466.01:100.91:530.66:215:31Third Quarter28Wed
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 9:48 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 Squamscott River, Great Bay, NH?

Squamscott River, Great Bay, NH is currently in a spring phase. Tonight's moon is 2% 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 New Moon (2% 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