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

TIDE TIMES for Monday, August 3, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 6h 05m at 11:29 am (0.1 ft)
Next high tide : 5:22 pm (7.2 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 5:36 am
Moon phase : Waning Gibbous (75% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:417.76:117.912:14-0.55:348:05First Quarter1Sun
2Mon6:387.47:077.912:47-0.21:08-0.25:358:03First Quarter2Mon
3Tue7:397.18:067.81:47-0.12:050.05:368:02First Quarter3Tue
4Wed8:436.99:087.82:500.03:060.35:378:01Waxing Gibbous4Wed
5Thu9:516.710:137.83:570.04:110.45:388:00Waxing Gibbous5Thu
6Fri10:586.711:167.85:050.05:160.45:397:58Waxing Gibbous6Fri
7Sat11:586.96:07-0.26:170.35:417:57Waxing Gibbous7Sat
8Sun12:147.912:537.07:02-0.37:110.25:427:56Full Moon8Sun
9Mon1:078.01:437.27:52-0.48:020.15:437:54Full Moon9Mon
10Tue1:568.02:307.28:39-0.48:500.15:447:53Full Moon10Tue
11Wed2:427.93:137.39:21-0.39:340.15:457:52Full Moon11Wed
12Thu3:257.73:537.310:01-0.210:170.25:467:50Waning Gibbous12Thu
13Fri4:067.44:327.210:390.010:580.45:477:49Waning Gibbous13Fri
14Sat4:477.15:117.111:170.311:410.65:487:47Waning Gibbous14Sat
15Sun5:306.85:526.911:570.65:497:46Waning Gibbous15Sun
16Mon6:156.56:366.812:260.712:390.85:507:44Third Quarter16Mon
17Tue7:046.27:246.71:130.91:241.15:517:43Third Quarter17Tue
18Wed7:566.08:146.62:041.12:121.35:537:41Third Quarter18Wed
19Thu8:515.99:086.62:581.13:051.45:547:40Third Quarter19Thu
20Fri9:495.910:046.83:561.14:011.35:557:38Waning Crescent20Fri
21Sat10:456.010:587.04:530.94:571.25:567:36Waning Crescent21Sat
22Sun11:366.311:477.35:450.65:500.95:577:35Waning Crescent22Sun
23Mon12:236.66:320.26:380.55:587:33Waning Crescent23Mon
24Tue12:347.71:077.17:16-0.17:260.15:597:32New Moon24Tue
25Wed1:207.91:517.57:59-0.58:13-0.36:007:30New Moon25Wed
26Thu2:078.22:357.88:43-0.79:01-0.66:017:28New Moon26Thu
27Fri2:548.33:208.19:27-0.99:49-0.86:027:27Waxing Crescent27Fri
28Sat3:428.24:068.310:13-0.910:40-0.86:037:25Waxing Crescent28Sat
29Sun4:328.04:558.311:01-0.711:33-0.76:057:23Waxing Crescent29Sun
30Mon5:257.75:498.211:53-0.46:067:22First Quarter30Mon
31Tue6:247.46:478.012:30-0.512:49-0.16:077:20First Quarter31Tue
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 2:25 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 75% 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 Waning Gibbous (75% 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