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

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 2:16 am (0.6 ft)
Next high tide : in 1h 01m at 7:46 pm (7.2 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:04 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 2037

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:206.95:526.711:560.45:358:04Waning Gibbous1Sat
2Sun6:026.76:336.712:141.012:350.65:368:03Third Quarter2Sun
3Mon6:486.47:166.71:001.01:170.85:378:02Third Quarter3Mon
4Tue7:366.28:016.71:481.12:011.05:388:01Third Quarter4Tue
5Wed8:286.18:506.82:391.02:501.15:397:59Third Quarter5Wed
6Thu9:246.09:437.03:340.93:421.15:407:58Waning Crescent6Thu
7Fri10:236.110:387.24:320.74:391.05:417:57Waning Crescent7Fri
8Sat11:206.311:327.65:290.45:350.75:427:55Waning Crescent8Sat
9Sun12:136.66:230.06:280.45:437:54Waning Crescent9Sun
10Mon12:258.01:057.07:13-0.47:210.15:447:53New Moon10Mon
11Tue1:168.31:567.48:03-0.88:13-0.35:457:51New Moon11Tue
12Wed2:088.62:467.78:53-1.09:06-0.55:467:50New Moon12Wed
13Thu3:018.73:367.99:42-1.29:59-0.75:477:48Waxing Crescent13Thu
14Fri3:538.64:268.110:32-1.110:53-0.75:497:47Waxing Crescent14Fri
15Sat4:468.45:198.111:23-1.011:49-0.65:507:45Waxing Crescent15Sat
16Sun5:438.06:148.012:16-0.65:517:44First Quarter16Sun
17Mon6:437.67:127.812:49-0.41:12-0.35:527:42First Quarter17Mon
18Tue7:467.28:127.71:52-0.22:110.15:537:41First Quarter18Tue
19Wed8:516.89:147.52:570.03:130.55:547:39First Quarter19Wed
20Thu9:576.610:177.44:040.24:180.75:557:38Waxing Gibbous20Thu
21Fri11:016.511:167.45:090.25:200.85:567:36Waxing Gibbous21Fri
22Sat11:576.66:080.26:160.85:577:35Waxing Gibbous22Sat
23Sun12:107.412:486.76:590.17:060.75:587:33Waxing Gibbous23Sun
24Mon12:587.51:336.77:450.07:510.66:007:31Full Moon24Mon
25Tue1:427.52:146.88:260.08:320.66:017:30Full Moon25Tue
26Wed2:227.52:526.99:030.19:100.56:027:28Full Moon26Wed
27Thu3:007.43:276.99:370.19:460.56:037:26Full Moon27Thu
28Fri3:367.34:016.910:100.210:220.66:047:25Waning Gibbous28Fri
29Sat4:127.14:346.910:420.410:590.66:057:23Waning Gibbous29Sat
30Sun4:486.95:096.911:170.511:380.76:067:21Waning Gibbous30Sun
31Mon5:276.75:476.811:540.76:077:20Waning Gibbous31Mon
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 11:01 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 neap phase. Tonight's moon is 48% 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 near their weekly minimum.

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 (48% illuminated). This places Squamscott River, Great Bay, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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