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

TIDE TIMES for Saturday, August 8, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 3:47 pm (0.7 ft)
Next high tide : in 4h 36m at 9:30 am (6.3 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 5:42 am
Moon phase : Waning Crescent (22% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 1967

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:235.710:326.74:321.14:301.65:338:06Waning Crescent1Tue
2Wed11:195.711:246.95:281.05:241.55:348:04Waning Crescent2Wed
3Thu12:095.96:190.76:151.35:358:03Waning Crescent3Thu
4Fri12:127.212:566.27:060.47:021.05:368:02New Moon4Fri
5Sat12:597.51:426.57:500.07:490.75:388:01New Moon5Sat
6Sun1:457.82:266.88:34-0.38:360.45:397:59New Moon6Sun
7Mon2:328.13:107.19:17-0.59:240.15:407:58New Moon7Mon
8Tue3:188.23:537.410:01-0.710:13-0.15:417:57Waxing Crescent8Tue
9Wed4:058.14:397.610:45-0.711:04-0.25:427:55Waxing Crescent9Wed
10Thu4:558.05:277.811:32-0.611:58-0.25:437:54Waxing Crescent10Thu
11Fri5:497.66:187.812:21-0.45:447:53First Quarter11Fri
12Sat6:477.37:137.812:55-0.21:140.05:457:51First Quarter12Sat
13Sun7:486.98:117.71:56-0.12:110.35:467:50First Quarter13Sun
14Mon8:546.69:147.63:000.13:120.65:477:48Waxing Gibbous14Mon
15Tue10:026.410:197.54:080.24:180.85:487:47Waxing Gibbous15Tue
16Wed11:096.411:227.65:160.15:230.85:497:45Waxing Gibbous16Wed
17Thu12:096.56:180.06:230.85:517:44Waxing Gibbous17Thu
18Fri12:207.61:036.67:12-0.17:170.65:527:42Full Moon18Fri
19Sat1:127.71:516.78:01-0.18:060.55:537:41Full Moon19Sat
20Sun1:597.72:356.88:45-0.18:510.55:547:39Full Moon20Sun
21Mon2:437.63:156.99:25-0.19:330.55:557:38Full Moon21Mon
22Tue3:247.53:526.910:020.110:130.55:567:36Waning Gibbous22Tue
23Wed4:037.24:286.910:370.310:530.65:577:35Waning Gibbous23Wed
24Thu4:417.05:046.911:120.511:330.75:587:33Waning Gibbous24Thu
25Fri5:216.65:416.811:480.85:597:31Waning Gibbous25Fri
26Sat6:056.36:226.712:160.912:271.06:007:30Third Quarter26Sat
27Sun6:526.07:076.61:021.01:101.36:017:28Third Quarter27Sun
28Mon7:435.87:566.51:511.11:571.56:037:26Third Quarter28Mon
29Tue8:395.68:506.52:451.22:501.66:047:25Third Quarter29Tue
30Wed9:405.69:496.63:451.23:471.66:057:23Waning Crescent30Wed
31Thu10:405.710:486.94:461.04:471.56:067:21Waning Crescent31Thu
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 12:38 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 transitional phase. Tonight's moon is 22% 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 Crescent (22% 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