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

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 1:13 am (0.5 ft)
Next high tide : in 4h 57m at 6:50 pm (7.2 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:04 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 2035

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:417.111:588.45:49-0.56:01-0.15:348:05Waning Crescent1Wed
2Thu12:407.46:48-0.86:59-0.35:358:04New Moon2Thu
3Fri12:568.61:377.67:44-1.07:56-0.55:368:03New Moon3Fri
4Sat1:528.72:317.88:37-1.28:51-0.65:378:01New Moon4Sat
5Sun2:468.73:237.99:29-1.29:45-0.55:388:00Waxing Crescent5Sun
6Mon3:398.54:147.910:19-1.010:37-0.45:397:59Waxing Crescent6Mon
7Tue4:318.25:047.811:08-0.711:31-0.25:407:58Waxing Crescent7Tue
8Wed5:237.85:557.611:58-0.45:417:56Waxing Crescent8Wed
9Thu6:177.36:477.412:250.112:490.15:437:55First Quarter9Thu
10Fri7:136.97:407.11:220.41:410.55:447:53First Quarter10Fri
11Sat8:106.58:347.02:200.62:340.85:457:52First Quarter11Sat
12Sun9:086.29:296.83:190.83:301.15:467:51First Quarter12Sun
13Mon10:086.110:256.84:200.94:281.25:477:49Waxing Gibbous13Mon
14Tue11:046.111:176.95:170.85:231.25:487:48Waxing Gibbous14Tue
15Wed11:556.26:080.76:121.15:497:46Waxing Gibbous15Wed
16Thu12:057.112:406.46:530.56:560.95:507:45Waxing Gibbous16Thu
17Fri12:487.21:226.57:340.37:360.85:517:43Full Moon17Fri
18Sat1:297.42:016.78:110.28:140.65:527:42Full Moon18Sat
19Sun2:077.52:386.98:460.18:520.55:537:40Full Moon19Sun
20Mon2:457.53:137.09:200.09:300.35:557:39Full Moon20Mon
21Tue3:217.53:487.29:55-0.110:090.25:567:37Waning Gibbous21Tue
22Wed3:597.54:247.310:32-0.110:510.15:577:35Waning Gibbous22Wed
23Thu4:407.45:047.411:12-0.111:360.15:587:34Waning Gibbous23Thu
24Fri5:247.35:497.511:560.05:597:32Third Quarter24Fri
25Sat6:157.16:397.512:260.112:450.16:007:30Third Quarter25Sat
26Sun7:116.97:357.61:210.11:380.36:017:29Third Quarter26Sun
27Mon8:126.88:367.62:200.12:370.46:027:27Third Quarter27Mon
28Tue9:186.79:417.73:240.13:400.46:037:26Waning Crescent28Tue
29Wed10:266.810:477.94:31-0.14:470.36:047:24Waning Crescent29Wed
30Thu11:297.111:488.15:36-0.35:500.06:057:22Waning Crescent30Thu
31Fri12:277.46:35-0.66:49-0.26:077:20New Moon31Fri
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 10:01 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 37% 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 First Quarter (37% 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