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

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 29m at 2:58 am (0.5 ft)
Next high tide : 8:44 am (6.5 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 2007

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:198.03:547.310:01-0.510:140.05:348:05Waning Gibbous1Wed
2Thu4:048.04:377.510:44-0.611:02-0.15:358:04Waning Gibbous2Thu
3Fri4:527.85:237.711:28-0.511:54-0.15:368:03Waning Gibbous3Fri
4Sat5:437.56:127.812:16-0.35:378:02Third Quarter4Sat
5Sun6:407.27:067.812:50-0.11:070.05:388:00Third Quarter5Sun
6Mon7:406.88:037.71:490.02:030.35:397:59Third Quarter6Mon
7Tue8:456.59:057.62:520.13:030.65:407:58Waning Crescent7Tue
8Wed9:546.410:127.64:000.24:090.85:417:56Waning Crescent8Wed
9Thu11:026.411:167.65:090.15:160.85:427:55Waning Crescent9Thu
10Fri12:046.56:120.06:170.75:437:54Waning Crescent10Fri
11Sat12:157.712:596.67:09-0.17:130.65:447:52New Moon11Sat
12Sun1:097.81:496.87:59-0.28:040.55:467:51New Moon12Sun
13Mon1:597.82:356.98:45-0.38:510.45:477:49New Moon13Mon
14Tue2:457.73:177.09:27-0.29:360.45:487:48New Moon14Tue
15Wed3:277.63:567.010:050.010:180.45:497:47Waxing Crescent15Wed
16Thu4:087.34:337.010:420.210:590.55:507:45Waxing Crescent16Thu
17Fri4:487.05:106.911:180.511:410.75:517:44Waxing Crescent17Fri
18Sat5:306.65:496.811:550.85:527:42Waxing Crescent18Sat
19Sun6:156.36:326.712:260.812:361.15:537:40First Quarter19Sun
20Mon7:046.07:186.61:131.01:201.35:547:39First Quarter20Mon
21Tue7:565.78:096.52:041.22:091.65:557:37First Quarter21Tue
22Wed8:535.59:046.53:001.33:021.75:567:36First Quarter22Wed
23Thu9:555.510:036.64:001.24:001.75:587:34Waxing Gibbous23Thu
24Fri10:535.711:006.95:011.14:591.55:597:32Waxing Gibbous24Fri
25Sat11:455.911:517.25:550.85:531.26:007:31Waxing Gibbous25Sat
26Sun12:326.36:410.46:430.86:017:29Waxing Gibbous26Sun
27Mon12:397.61:156.87:250.07:300.46:027:28Full Moon27Mon
28Tue1:257.91:587.28:07-0.48:17-0.16:037:26Full Moon28Tue
29Wed2:118.12:417.68:49-0.69:05-0.46:047:24Full Moon29Wed
30Thu2:578.23:248.09:32-0.79:53-0.66:057:22Waning Gibbous30Thu
31Fri3:448.14:088.110:16-0.710:43-0.76:067:21Waning Gibbous31Fri
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 5:51 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 30% 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 (30% 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