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

TIDE TIMES for Thursday, August 13, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 8:40 am (-0.8 ft)
Next high tide : in 43m at 1:54 am (8.4 ft)
Sunset today : 7:49 pm
Sunrise tomorrow : 5:47 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Apr 1958

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:257.610:577.64:300.05:03-0.45:256:09Waxing Gibbous1Tue
2Wed11:218.011:498.15:28-0.55:55-0.85:246:10Full Moon2Wed
3Thu12:158.26:22-1.06:46-1.15:226:11Full Moon3Thu
4Fri12:398.51:098.47:15-1.47:36-1.25:206:12Full Moon4Fri
5Sat1:298.82:018.48:07-1.68:26-1.15:186:13Full Moon5Sat
6Sun2:198.82:538.28:59-1.69:16-0.95:176:15Waning Gibbous6Sun
7Mon3:098.73:477.89:51-1.310:08-0.55:156:16Waning Gibbous7Mon
8Tue4:028.34:437.410:46-1.011:03-0.15:136:17Waning Gibbous8Tue
9Wed4:587.95:437.011:45-0.55:126:18Third Quarter9Wed
10Thu5:597.56:466.712:030.412:47-0.15:106:19Third Quarter10Thu
11Fri7:027.17:496.51:070.71:500.35:086:20Third Quarter11Fri
12Sat8:076.88:526.52:130.92:550.55:066:22Third Quarter12Sat
13Sun9:116.79:506.63:201.03:560.65:056:23Waning Crescent13Sun
14Mon10:096.710:406.74:210.94:490.65:036:24Waning Crescent14Mon
15Tue11:006.811:256.95:130.75:350.55:016:25Waning Crescent15Tue
16Wed11:456.85:590.46:150.55:006:26Waning Crescent16Wed
17Thu12:047.112:276.96:400.36:510.54:586:27New Moon17Thu
18Fri12:417.21:066.97:170.17:250.54:576:29New Moon18Fri
19Sat1:167.31:436.97:520.07:580.54:556:30New Moon19Sat
20Sun1:497.32:186.88:260.08:310.64:536:31New Moon20Sun
21Mon2:217.32:536.79:000.09:060.74:526:32Waxing Crescent21Mon
22Tue2:557.33:296.69:360.09:430.74:506:33Waxing Crescent22Tue
23Wed3:317.34:086.510:150.110:240.84:496:34Waxing Crescent23Wed
24Thu4:117.24:526.510:580.211:100.94:476:35Waxing Crescent24Thu
25Fri4:587.15:426.411:460.24:466:37First Quarter25Fri
26Sat5:517.16:366.512:010.912:390.24:446:38First Quarter26Sat
27Sun7:497.18:346.712:580.82:350.25:437:39First Quarter27Sun
28Mon8:527.19:347.03:000.73:350.15:417:40Waxing Gibbous28Mon
29Tue9:577.310:347.54:040.44:36-0.15:407:41Waxing Gibbous29Tue
30Wed11:017.511:307.95:08-0.15:34-0.35:387:42Waxing Gibbous30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

Show All
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 5:17 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 spring phase. Tonight's moon is 1% 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 New Moon (1% 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