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

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 5h 51m at 6:05 am (-0.3 ft)
Next high tide : 11:56 am (6.7 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Dec 2002

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:117.910:437.44:13-0.14:51-0.46:554:10Waning Crescent1Sun
2Mon11:038.311:397.65:08-0.35:47-0.96:564:09New Moon2Mon
3Tue11:548.56:00-0.46:40-1.26:574:09New Moon3Tue
4Wed12:337.612:448.76:51-0.47:32-1.36:584:09New Moon4Wed
5Thu1:267.61:348.67:42-0.38:23-1.26:594:09New Moon5Thu
6Fri2:187.42:258.48:32-0.19:14-1.07:004:08Waxing Crescent6Fri
7Sat3:097.23:158.19:230.110:05-0.77:014:08Waxing Crescent7Sat
8Sun4:017.04:077.710:150.510:58-0.37:024:08Waxing Crescent8Sun
9Mon4:556.75:027.311:100.811:520.17:034:08First Quarter9Mon
10Tue5:516.55:596.912:081.07:044:08First Quarter10Tue
11Wed6:466.46:586.512:470.41:081.27:044:08First Quarter11Wed
12Thu7:416.47:566.31:410.72:081.27:054:08First Quarter12Thu
13Fri8:346.48:546.22:340.93:091.27:064:09First Quarter13Fri
14Sat9:246.69:496.13:271.04:051.07:074:09Waxing Gibbous14Sat
15Sun10:116.710:406.24:161.04:550.77:084:09Waxing Gibbous15Sun
16Mon10:536.911:266.35:001.05:390.57:084:09Waxing Gibbous16Mon
17Tue11:337.15:400.96:190.37:094:10Waxing Gibbous17Tue
18Wed12:086.312:117.26:180.96:580.17:104:10Full Moon18Wed
19Thu12:496.412:487.46:560.87:35-0.17:104:10Full Moon19Thu
20Fri1:286.41:267.57:340.88:14-0.27:114:11Full Moon20Fri
21Sat2:076.52:057.58:140.78:53-0.27:114:11Waning Gibbous21Sat
22Sun2:466.52:467.68:550.79:34-0.37:124:12Waning Gibbous22Sun
23Mon3:286.53:297.69:390.610:18-0.37:124:12Waning Gibbous23Mon
24Tue4:136.64:187.510:280.611:06-0.27:134:13Waning Gibbous24Tue
25Wed5:026.75:127.311:220.611:58-0.27:134:13Third Quarter25Wed
26Thu5:566.86:117.112:200.57:134:14Third Quarter26Thu
27Fri6:527.07:136.912:52-0.11:220.47:144:15Third Quarter27Fri
28Sat7:507.28:196.81:490.02:270.27:144:16Third Quarter28Sat
29Sun8:507.59:266.82:490.13:34-0.17:144:16Waning Crescent29Sun
30Mon9:497.810:296.93:500.14:37-0.47:144:17Waning Crescent30Mon
31Tue10:468.011:256.94:490.15:35-0.77:144:18Waning Crescent31Tue
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 9:00 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 5% 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 Waning Crescent (5% 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