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

TIDE TIMES for Thursday, July 23, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 4:45 am (0.9 ft)
Next high tide : in 5h 45m at 9:48 pm (6.8 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:25 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 1992

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:298.74:038.110:09-1.210:30-0.75:348:04Waxing Crescent1Sat
2Sun4:238.44:558.210:59-1.011:25-0.65:358:03Waxing Crescent2Sun
3Mon5:188.05:488.111:50-0.75:368:02Waxing Crescent3Mon
4Tue6:167.66:447.912:23-0.412:44-0.35:388:01First Quarter4Tue
5Wed7:177.17:427.71:24-0.21:410.25:398:00First Quarter5Wed
6Thu8:196.78:427.42:270.12:400.65:407:58First Quarter6Thu
7Fri9:246.49:437.33:320.33:420.95:417:57Waxing Gibbous7Fri
8Sat10:286.210:447.24:380.54:461.05:427:56Waxing Gibbous8Sat
9Sun11:286.211:407.25:390.45:451.05:437:54Waxing Gibbous9Sun
10Mon12:206.36:320.46:361.05:447:53Waxing Gibbous10Mon
11Tue12:297.31:066.47:190.37:220.95:457:51Full Moon11Tue
12Wed1:137.31:476.68:000.28:030.85:467:50Full Moon12Wed
13Thu1:547.32:256.78:370.28:420.75:477:49Full Moon13Thu
14Fri2:327.33:006.89:100.29:180.65:487:47Full Moon14Fri
15Sat3:087.23:336.99:420.29:530.65:497:46Waning Gibbous15Sat
16Sun3:427.14:056.910:130.310:290.65:517:44Waning Gibbous16Sun
17Mon4:177.04:377.010:450.411:060.65:527:43Waning Gibbous17Mon
18Tue4:536.85:127.011:200.611:460.65:537:41Waning Gibbous18Tue
19Wed5:336.65:517.011:590.75:547:39Third Quarter19Wed
20Thu6:186.46:367.012:310.712:420.85:557:38Third Quarter20Thu
21Fri7:086.27:277.01:210.71:310.95:567:36Third Quarter21Fri
22Sat8:056.18:247.12:160.72:251.05:577:35Third Quarter22Sat
23Sun9:076.19:267.33:160.63:260.95:587:33Waning Crescent23Sun
24Mon10:126.310:317.64:210.44:300.75:597:31Waning Crescent24Mon
25Tue11:156.711:328.05:240.05:340.36:007:30Waning Crescent25Tue
26Wed12:127.16:21-0.46:33-0.16:017:28New Moon26Wed
27Thu12:308.31:067.67:14-0.87:29-0.56:037:26New Moon27Thu
28Fri1:258.61:588.08:05-1.08:24-0.96:047:25New Moon28Fri
29Sat2:198.62:488.38:55-1.19:18-1.06:057:23New Moon29Sat
30Sun3:128.53:388.59:44-1.010:11-1.06:067:21Waxing Crescent30Sun
31Mon4:048.34:278.410:33-0.811:04-0.96:077:20Waxing Crescent31Mon
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 1:16 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 71% 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 Waxing Gibbous (71% 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