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

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 2:44 am (0.7 ft)
Next high tide : in 3h 35m at 8:00 pm (7.1 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:23 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Dec 1995

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:397.39:076.92:370.23:170.36:554:10Waxing Gibbous1Fri
2Sat9:377.410:086.83:380.34:190.26:564:09Waxing Gibbous2Sat
3Sun10:307.511:036.84:350.45:140.06:574:09Waxing Gibbous3Sun
4Mon11:187.511:516.85:250.56:03-0.16:584:09Waxing Gibbous4Mon
5Tue12:027.66:100.56:47-0.26:594:09Full Moon5Tue
6Wed12:366.812:427.66:520.57:28-0.27:004:09Full Moon6Wed
7Thu1:186.71:217.57:310.68:06-0.17:014:08Full Moon7Thu
8Fri1:576.71:587.48:080.78:43-0.17:024:08Full Moon8Fri
9Sat2:346.62:357.38:450.89:180.07:034:08Waning Gibbous9Sat
10Sun3:116.63:117.29:220.89:540.27:034:08Waning Gibbous10Sun
11Mon3:496.53:497.010:000.910:310.37:044:08Waning Gibbous11Mon
12Tue4:286.44:306.810:421.011:120.47:054:08Waning Gibbous12Tue
13Wed5:106.45:156.611:271.111:550.57:064:09Third Quarter13Wed
14Thu5:546.46:046.512:171.17:074:09Third Quarter14Thu
15Fri6:416.66:576.412:410.61:091.07:074:09Third Quarter15Fri
16Sat7:306.87:536.41:300.62:050.87:084:09Third Quarter16Sat
17Sun8:227.08:536.52:220.63:030.57:094:10Waning Crescent17Sun
18Mon9:177.49:536.73:180.44:020.17:094:10Waning Crescent18Mon
19Tue10:117.810:497.04:140.24:58-0.47:104:10Waning Crescent19Tue
20Wed11:048.211:447.35:09-0.15:52-0.97:114:11New Moon20Wed
21Thu11:578.66:02-0.46:45-1.27:114:11New Moon21Thu
22Fri12:377.512:508.86:55-0.67:37-1.57:124:12New Moon22Fri
23Sat1:317.71:438.97:49-0.78:30-1.57:124:12Waxing Crescent23Sat
24Sun2:247.82:378.88:43-0.79:22-1.57:134:13Waxing Crescent24Sun
25Mon3:187.83:328.59:38-0.610:15-1.27:134:13Waxing Crescent25Mon
26Tue4:127.74:298.110:35-0.411:10-0.97:134:14Waxing Crescent26Tue
27Wed5:107.65:307.611:36-0.27:144:15First Quarter27Wed
28Thu6:097.46:337.112:08-0.412:400.17:144:15First Quarter28Thu
29Fri7:097.37:366.81:060.01:450.37:144:16First Quarter29Fri
30Sat8:087.28:416.52:060.32:510.47:144:17First Quarter30Sat
31Sun9:087.19:446.43:080.63:550.37:144:18Waxing Gibbous31Sun
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 11:22 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 neap phase. Tonight's moon is 52% 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 minimum.

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 (52% illuminated). This places Squamscott River, Great Bay, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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