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

TIDE TIMES for Sunday, August 9, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 4:55 pm (0.6 ft)
Next high tide : in 2h 55m at 10:39 am (6.4 ft)
Sunset today : 7:55 pm
Sunrise tomorrow : 5:43 am
Moon phase : Waning Crescent (13% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 1965

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:498.35:267.811:30-0.911:52-0.25:348:05Waxing Crescent1Sun
2Mon5:457.96:217.712:23-0.55:358:04First Quarter2Mon
3Tue6:447.47:167.512:520.01:17-0.15:368:03First Quarter3Tue
4Wed7:457.08:127.41:530.22:120.45:378:01First Quarter4Wed
5Thu8:466.69:097.22:550.43:090.85:388:00First Quarter5Thu
6Fri9:496.310:077.13:590.54:091.15:397:59Waxing Gibbous6Fri
7Sat10:506.211:037.15:010.65:081.25:407:58Waxing Gibbous7Sat
8Sun11:466.111:557.15:580.56:021.25:417:56Waxing Gibbous8Sun
9Mon12:366.26:480.46:491.15:427:55Waxing Gibbous9Mon
10Tue12:417.21:206.37:330.47:331.05:437:53Full Moon10Tue
11Wed1:247.32:026.48:130.38:130.95:457:52Full Moon11Wed
12Thu2:047.32:406.58:500.28:500.95:467:51Full Moon12Thu
13Fri2:427.43:156.69:240.29:260.85:477:49Full Moon13Fri
14Sat3:177.33:496.79:570.210:020.75:487:48Waning Gibbous14Sat
15Sun3:527.34:216.810:290.210:390.75:497:46Waning Gibbous15Sun
16Mon4:287.14:556.911:020.311:180.75:507:45Waning Gibbous16Mon
17Tue5:057.05:317.011:380.35:517:43Waning Gibbous17Tue
18Wed5:476.86:117.012:010.612:180.55:527:42Third Quarter18Wed
19Thu6:356.66:577.112:480.61:030.65:537:40Third Quarter19Thu
20Fri7:276.47:487.21:400.51:530.75:547:39Third Quarter20Fri
21Sat8:266.38:467.42:360.52:480.85:557:37Third Quarter21Sat
22Sun9:306.39:497.53:390.43:500.85:577:35Waning Crescent22Sun
23Mon10:376.510:547.84:450.14:550.65:587:34Waning Crescent23Mon
24Tue11:406.811:568.25:48-0.25:580.35:597:32Waning Crescent24Tue
25Wed12:397.16:47-0.66:57-0.16:007:31New Moon25Wed
26Thu12:548.41:347.57:42-0.97:54-0.46:017:29New Moon26Thu
27Fri1:508.62:277.88:35-1.18:49-0.66:027:27New Moon27Fri
28Sat2:448.63:188.09:25-1.19:43-0.76:037:26Waxing Crescent28Sat
29Sun3:378.54:078.010:14-0.910:35-0.66:047:24Waxing Crescent29Sun
30Mon4:298.14:567.911:02-0.611:29-0.46:057:22Waxing Crescent30Mon
31Tue5:227.75:477.711:52-0.26:067:20Waxing Crescent31Tue
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 1:47 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 spring phase. Tonight's moon is 13% 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 Waning Crescent (13% 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