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

TIDE TIMES for Wednesday, August 5, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 1:36 am (0.3 ft)
Next high tide : in 49m at 6:52 pm (7.4 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 5:38 am
Moon phase : Third Quarter (55% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jan 1971

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:487.33:598.010:07-0.210:43-0.87:154:19Waxing Crescent1Fri
2Sat4:397.44:557.711:03-0.111:35-0.67:154:19First Quarter2Sat
3Sun5:347.45:557.312:030.07:154:20First Quarter3Sun
4Mon6:307.56:586.912:29-0.31:060.07:154:21First Quarter4Mon
5Tue7:297.48:046.61:260.12:120.17:154:22First Quarter5Tue
6Wed8:307.49:136.42:270.43:200.17:154:23Waxing Gibbous6Wed
7Thu9:327.410:186.43:310.64:260.07:144:24Waxing Gibbous7Thu
8Fri10:317.511:166.44:330.75:25-0.27:144:25Waxing Gibbous8Fri
9Sat11:257.55:300.76:18-0.37:144:26Full Moon9Sat
10Sun12:096.512:157.66:210.67:06-0.37:144:27Full Moon10Sun
11Mon12:576.51:017.67:080.67:51-0.37:144:29Full Moon11Mon
12Tue1:416.61:447.57:520.68:31-0.27:134:30Full Moon12Tue
13Wed2:216.62:247.48:330.69:08-0.17:134:31Waning Gibbous13Wed
14Thu2:596.63:027.29:130.69:440.07:124:32Waning Gibbous14Thu
15Fri3:366.53:417.09:520.710:190.27:124:33Waning Gibbous15Fri
16Sat4:126.54:206.710:320.810:550.57:114:34Waning Gibbous16Sat
17Sun4:516.55:036.311:160.911:340.77:114:36Third Quarter17Sun
18Mon5:316.45:506.012:021.07:104:37Third Quarter18Mon
19Tue6:146.46:405.812:160.912:521.17:104:38Third Quarter19Tue
20Wed7:016.47:365.61:011.21:451.17:094:39Third Quarter20Wed
21Thu7:536.48:365.51:521.32:431.07:084:40Third Quarter21Thu
22Fri8:496.69:385.62:471.43:450.87:084:42Waning Crescent22Fri
23Sat9:476.910:355.93:461.24:430.47:074:43Waning Crescent23Sat
24Sun10:417.311:276.24:430.95:350.07:064:44Waning Crescent24Sun
25Mon11:337.75:360.66:24-0.47:054:46New Moon25Mon
26Tue12:166.612:238.16:270.17:12-0.87:044:47New Moon26Tue
27Wed1:047.01:138.47:18-0.37:59-1.17:044:48New Moon27Wed
28Thu1:517.42:038.58:09-0.68:45-1.37:034:50Waxing Crescent28Thu
29Fri2:387.72:538.49:00-0.89:31-1.27:024:51Waxing Crescent29Fri
30Sat3:257.93:448.19:52-0.810:19-1.07:014:52Waxing Crescent30Sat
31Sun4:147.94:387.710:46-0.711:10-0.67:004:54Waxing Crescent31Sun
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 10:14 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 55% 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 Third Quarter (55% 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