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

TIDE TIMES for Friday, July 17, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 2h 14m at 10:39 am (-0.9 ft)
Next high tide : 4:34 pm (7.5 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Dec 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:226.45:276.611:371.26:554:09Third Quarter1Sun
2Mon6:106.36:196.412:090.612:291.36:564:09Third Quarter2Mon
3Tue7:006.37:136.312:570.81:221.36:574:09Third Quarter3Tue
4Wed7:496.48:086.21:460.92:171.26:584:09Third Quarter4Wed
5Thu8:396.69:046.22:360.93:131.06:594:09Waning Crescent5Thu
6Fri9:286.89:576.33:270.94:070.77:004:08Waning Crescent6Fri
7Sat10:157.110:466.64:170.74:560.37:014:08Waning Crescent7Sat
8Sun10:597.511:326.85:030.55:41-0.17:024:08Waning Crescent8Sun
9Mon11:427.85:480.36:26-0.57:034:08New Moon9Mon
10Tue12:187.012:278.16:340.07:12-0.87:044:08New Moon10Tue
11Wed1:057.21:138.47:20-0.27:59-1.07:054:08New Moon11Wed
12Thu1:527.42:018.58:09-0.38:47-1.17:064:09Waxing Crescent12Thu
13Fri2:417.52:518.58:59-0.39:37-1.17:064:09Waxing Crescent13Fri
14Sat3:327.53:448.39:52-0.310:29-1.07:074:09Waxing Crescent14Sat
15Sun4:267.54:418.010:48-0.211:24-0.87:084:09First Quarter15Sun
16Mon5:247.55:427.611:490.07:094:09First Quarter16Mon
17Tue6:257.46:477.312:23-0.512:540.17:094:10First Quarter17Tue
18Wed7:277.47:547.01:23-0.22:010.17:104:10First Quarter18Wed
19Thu8:297.49:016.92:250.03:090.17:104:11Waxing Gibbous19Thu
20Fri9:297.510:056.83:280.24:14-0.17:114:11Waxing Gibbous20Fri
21Sat10:267.611:026.94:290.35:12-0.27:124:11Waxing Gibbous21Sat
22Sun11:177.711:546.95:230.36:04-0.47:124:12Waxing Gibbous22Sun
23Mon12:057.86:120.36:52-0.57:124:13Full Moon23Mon
24Tue12:416.912:497.76:570.37:35-0.57:134:13Full Moon24Tue
25Wed1:266.91:317.77:400.48:16-0.47:134:14Full Moon25Wed
26Thu2:076.82:107.68:200.48:54-0.37:144:14Full Moon26Thu
27Fri2:456.82:487.48:580.59:30-0.17:144:15Waning Gibbous27Fri
28Sat3:236.73:267.29:370.710:070.17:144:16Waning Gibbous28Sat
29Sun4:016.64:067.010:170.810:450.27:144:17Waning Gibbous29Sun
30Mon4:416.54:486.710:590.911:250.47:144:17Waning Gibbous30Mon
31Tue5:246.55:346.511:451.07:154:18Third 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 1:36 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 spring phase. Tonight's moon is 14% 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 Crescent (14% 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