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

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 2h 53m at 3:48 pm (1.3 ft)
Next high tide : 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 - Nov 1992

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:556.36:036.812:101.26:184:35First Quarter1Sun
2Mon6:506.27:016.512:520.71:091.46:204:34First Quarter2Mon
3Tue7:456.27:596.41:470.92:081.46:214:33First Quarter3Tue
4Wed8:396.38:566.32:411.03:081.36:224:31Waxing Gibbous4Wed
5Thu9:296.59:506.43:331.04:031.16:244:30Waxing Gibbous5Thu
6Fri10:146.710:386.54:201.04:510.86:254:29Waxing Gibbous6Fri
7Sat10:557.011:226.65:020.95:340.56:264:28Waxing Gibbous7Sat
8Sun11:337.25:400.86:130.26:274:27Full Moon8Sun
9Mon12:036.712:097.46:170.76:510.06:294:25Full Moon9Mon
10Tue12:436.712:467.66:550.67:30-0.26:304:24Full Moon10Tue
11Wed1:226.81:247.77:330.58:10-0.36:314:23Full Moon11Wed
12Thu2:036.82:057.88:140.58:52-0.46:324:22Waning Gibbous12Thu
13Fri2:446.82:487.88:580.59:37-0.36:344:21Waning Gibbous13Fri
14Sat3:296.83:357.89:450.510:25-0.36:354:20Waning Gibbous14Sat
15Sun4:196.84:287.610:370.611:18-0.26:364:19Waning Gibbous15Sun
16Mon5:156.85:277.411:340.66:384:19Third Quarter16Mon
17Tue6:156.96:317.312:15-0.112:370.66:394:18Third Quarter17Tue
18Wed7:157.07:377.11:140.01:430.56:404:17Third Quarter18Wed
19Thu8:167.38:447.12:140.12:500.36:414:16Waning Crescent19Thu
20Fri9:167.69:497.13:160.13:560.06:434:15Waning Crescent20Fri
21Sat10:137.910:487.24:150.04:56-0.46:444:15Waning Crescent21Sat
22Sun11:058.111:437.35:100.05:51-0.76:454:14New Moon22Sun
23Mon11:558.26:010.06:42-0.86:464:13New Moon23Mon
24Tue12:357.312:438.36:500.07:31-0.86:474:13New Moon24Tue
25Wed1:247.21:308.27:380.18:18-0.76:494:12New Moon25Wed
26Thu2:117.12:168.08:240.39:04-0.56:504:12Waxing Crescent26Thu
27Fri2:576.93:007.79:090.59:48-0.26:514:11Waxing Crescent27Fri
28Sat3:426.73:457.49:550.710:330.16:524:11Waxing Crescent28Sat
29Sun4:286.54:327.010:421.011:190.46:534:10Waxing Crescent29Sun
30Mon5:166.45:226.711:321.16:544:10First Quarter30Mon
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 6:48 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 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