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 45m at 11:52 pm (0.4 ft)
Next high tide (tomorrow) : 5:38 am (7.0 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 - Dec 1974

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:537.01:588.28:060.18:46-0.86:554:10Waning Gibbous1Sun
2Mon2:407.12:478.28:550.19:35-0.86:564:09Waning Gibbous2Mon
3Tue3:297.23:388.19:460.110:25-0.76:574:09Waning Gibbous3Tue
4Wed4:217.24:347.910:410.111:20-0.56:584:09Waning Gibbous4Wed
5Thu5:197.25:357.611:410.26:594:09Third Quarter5Thu
6Fri6:187.26:397.312:17-0.312:460.37:004:09Third Quarter6Fri
7Sat7:197.37:467.01:16-0.11:520.27:014:08Third Quarter7Sat
8Sun8:207.48:536.92:170.13:000.17:024:08Waning Crescent8Sun
9Mon9:207.69:576.83:190.24:06-0.17:034:08Waning Crescent9Mon
10Tue10:177.710:566.94:190.35:05-0.37:044:08Waning Crescent10Tue
11Wed11:097.811:496.95:150.35:58-0.57:044:08Waning Crescent11Wed
12Thu11:587.96:050.36:47-0.57:054:09New Moon12Thu
13Fri12:396.912:447.96:520.37:33-0.57:064:09New Moon13Fri
14Sat1:256.91:287.87:370.48:16-0.47:074:09New Moon14Sat
15Sun2:086.82:107.78:190.58:57-0.37:084:09Waxing Crescent15Sun
16Mon2:496.72:507.59:000.69:36-0.17:084:09Waxing Crescent16Mon
17Tue3:296.63:307.29:410.710:140.17:094:10Waxing Crescent17Tue
18Wed4:096.54:127.010:230.910:540.37:104:10Waxing Crescent18Wed
19Thu4:516.44:566.711:081.011:350.57:104:10Waxing Crescent19Thu
20Fri5:346.45:446.411:561.17:114:11First Quarter20Fri
21Sat6:206.46:346.212:180.712:461.27:114:11First Quarter21Sat
22Sun7:066.47:276.01:040.91:391.17:124:12First Quarter22Sun
23Mon7:546.58:245.91:511.02:341.07:124:12First Quarter23Mon
24Tue8:456.79:216.02:431.13:310.87:134:13Waxing Gibbous24Tue
25Wed9:367.010:166.13:361.04:250.57:134:13Waxing Gibbous25Wed
26Thu10:267.311:076.44:290.85:160.17:134:14Waxing Gibbous26Thu
27Fri11:157.711:566.75:190.66:05-0.37:144:15Full Moon27Fri
28Sat12:038.06:080.36:52-0.77:144:15Full Moon28Sat
29Sun12:446.912:528.36:580.07:40-1.07:144:16Full Moon29Sun
30Mon1:337.21:428.57:48-0.38:29-1.27:144:17Full Moon30Mon
31Tue2:227.42:338.58:39-0.49:18-1.27:154:18Waning Gibbous31Tue
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 2:45 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 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