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

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 2:53 pm (1.0 ft)
Next high tide : in 1h 40m at 8:32 am (6.3 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 5:24 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jan 1995

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:257.512:388.76:43-0.57:26-1.47:154:19New Moon1Sun
2Mon1:207.61:328.77:37-0.68:18-1.47:154:20New Moon2Mon
3Tue2:127.72:258.58:31-0.69:08-1.37:154:20Waxing Crescent3Tue
4Wed3:037.73:168.29:23-0.59:58-1.07:154:21Waxing Crescent4Wed
5Thu3:537.54:087.810:16-0.210:48-0.67:154:22Waxing Crescent5Thu
6Fri4:457.35:027.311:100.111:39-0.27:154:23First Quarter6Fri
7Sat5:387.15:586.912:080.47:144:24First Quarter7Sat
8Sun6:316.96:556.412:310.21:060.67:144:25First Quarter8Sun
9Mon7:256.87:546.11:240.62:060.77:144:26First Quarter9Mon
10Tue8:206.78:546.02:190.93:080.87:144:28First Quarter10Tue
11Wed9:156.79:525.93:161.14:070.77:134:29Waxing Gibbous11Wed
12Thu10:086.810:456.04:121.14:590.67:134:30Waxing Gibbous12Thu
13Fri10:556.911:316.25:011.05:450.47:134:31Waxing Gibbous13Fri
14Sat11:397.15:460.96:260.27:124:32Waxing Gibbous14Sat
15Sun12:146.312:197.36:260.77:040.07:124:33Full Moon15Sun
16Mon12:546.512:577.47:040.67:40-0.27:114:34Full Moon16Mon
17Tue1:316.61:347.57:410.48:14-0.37:114:36Full Moon17Tue
18Wed2:076.82:117.58:190.38:49-0.47:104:37Full Moon18Wed
19Thu2:426.92:487.58:580.29:25-0.47:104:38Waning Gibbous19Thu
20Fri3:187.13:277.59:390.110:04-0.47:094:39Waning Gibbous20Fri
21Sat3:567.24:107.310:230.010:47-0.37:084:41Waning Gibbous21Sat
22Sun4:407.34:597.111:120.011:34-0.27:084:42Third Quarter22Sun
23Mon5:287.35:546.912:060.07:074:43Third Quarter23Mon
24Tue6:227.46:546.712:260.01:040.17:064:44Third Quarter24Tue
25Wed7:227.48:016.51:230.22:080.07:054:46Third Quarter25Wed
26Thu8:267.59:116.62:250.33:16-0.17:044:47Waning Crescent26Thu
27Fri9:327.710:186.83:310.24:24-0.47:034:48Waning Crescent27Fri
28Sat10:367.911:187.04:370.15:25-0.77:024:50Waning Crescent28Sat
29Sun11:348.25:37-0.26:21-0.97:024:51New Moon29Sun
30Mon12:147.312:298.36:33-0.47:13-1.17:014:52New Moon30Mon
31Tue1:067.51:218.47:26-0.68:02-1.26:594:54New Moon31Tue
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 11:42 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 transitional phase. Tonight's moon is 62% 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 First Quarter (62% 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