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

TIDE TIMES for Friday, July 24, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 4:46 pm (1.5 ft)
Next high tide : in 5h 14m at 10:32 am (5.8 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 5:26 am
Moon phase : Waxing Gibbous (79% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 1991

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:246.95:507.211:560.35:348:05Third Quarter1Thu
2Fri6:106.76:347.312:250.512:400.45:358:04Third Quarter2Fri
3Sat7:016.67:247.41:150.51:280.55:368:03Third Quarter3Sat
4Sun7:586.48:207.52:110.42:210.65:378:02Third Quarter4Sun
5Mon9:006.39:217.63:110.43:210.75:388:01Waning Crescent5Mon
6Tue10:086.410:277.84:170.24:260.65:397:59Waning Crescent6Tue
7Wed11:156.611:318.15:23-0.15:310.45:407:58Waning Crescent7Wed
8Thu12:166.96:25-0.46:330.15:417:57New Moon8Thu
9Fri12:318.41:137.37:21-0.77:31-0.25:427:55New Moon9Fri
10Sat1:288.52:077.68:15-1.08:27-0.45:437:54New Moon10Sat
11Sun2:238.62:587.89:05-1.09:21-0.65:447:52New Moon11Sun
12Mon3:168.53:488.09:54-0.910:14-0.65:457:51Waxing Crescent12Mon
13Tue4:078.24:367.910:42-0.711:07-0.45:467:50Waxing Crescent13Tue
14Wed4:597.75:257.811:29-0.35:487:48Waxing Crescent14Wed
15Thu5:527.36:157.512:00-0.112:180.15:497:47First Quarter15Thu
16Fri6:476.87:087.212:560.21:100.65:507:45First Quarter16Fri
17Sat7:456.48:037.01:540.52:041.05:517:44First Quarter17Sat
18Sun8:446.09:016.82:530.73:011.35:527:42First Quarter18Sun
19Mon9:465.910:006.73:560.94:011.45:537:41Waxing Gibbous19Mon
20Tue10:455.910:576.84:580.95:011.45:547:39Waxing Gibbous20Tue
21Wed11:386.011:476.95:520.85:541.35:557:37Waxing Gibbous21Wed
22Thu12:256.26:390.66:401.15:567:36Waxing Gibbous22Thu
23Fri12:327.11:076.47:200.57:220.95:577:34Full Moon23Fri
24Sat1:137.21:456.67:560.38:000.75:587:33Full Moon24Sat
25Sun1:527.32:206.88:300.28:370.56:007:31Full Moon25Sun
26Mon2:297.42:547.09:020.19:140.46:017:29Full Moon26Mon
27Tue3:047.33:267.29:350.19:510.26:027:28Waning Gibbous27Tue
28Wed3:417.33:597.310:090.110:300.16:037:26Waning Gibbous28Wed
29Thu4:197.14:367.410:450.211:120.16:047:24Waning Gibbous29Thu
30Fri5:007.05:177.511:260.311:590.16:057:23Waning Gibbous30Fri
31Sat5:476.86:057.512:120.56:067:21Third Quarter31Sat
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 1:39 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 79% 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 (79% 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