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

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 5h 24m at 2:40 pm (0.4 ft)
Next high tide : 8:41 pm (7.2 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:04 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 2015

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:078.42:447.68:50-0.99:03-0.45:348:05Full Moon1Sat
2Sun2:578.63:327.99:38-1.19:55-0.65:358:04Waning Gibbous2Sun
3Mon3:488.54:228.110:26-1.110:47-0.65:368:03Waning Gibbous3Mon
4Tue4:408.45:138.111:17-1.011:43-0.65:378:02Waning Gibbous4Tue
5Wed5:358.16:088.112:09-0.75:388:00Third Quarter5Wed
6Thu6:347.77:067.912:42-0.41:05-0.45:397:59Third Quarter6Thu
7Fri7:377.38:067.81:44-0.22:03-0.15:407:58Third Quarter7Fri
8Sat8:417.09:087.72:480.03:050.35:417:56Third Quarter8Sat
9Sun9:486.710:117.63:550.14:090.55:427:55Waning Crescent9Sun
10Mon10:526.711:127.65:010.15:130.65:437:54Waning Crescent10Mon
11Tue11:516.76:010.06:110.65:457:52Waning Crescent11Tue
12Wed12:077.612:436.86:54-0.17:030.55:467:51New Moon12Wed
13Thu12:567.61:316.97:42-0.17:490.55:477:49New Moon13Thu
14Fri1:427.62:146.98:25-0.18:320.45:487:48New Moon14Fri
15Sat2:247.62:537.09:04-0.19:120.45:497:46New Moon15Sat
16Sun3:037.53:307.09:400.09:500.55:507:45Waxing Crescent16Sun
17Mon3:407.34:067.010:140.210:270.55:517:43Waxing Crescent17Mon
18Tue4:177.14:417.010:480.311:050.65:527:42Waxing Crescent18Tue
19Wed4:556.95:176.911:240.511:450.75:537:40Waxing Crescent19Wed
20Thu5:356.75:566.812:020.75:547:39Waxing Crescent20Thu
21Fri6:186.46:396.812:290.812:430.85:557:37First Quarter21Fri
22Sat7:066.27:256.81:150.91:291.05:577:36First Quarter22Sat
23Sun7:576.18:166.82:060.92:181.15:587:34First Quarter23Sun
24Mon8:536.19:116.93:000.93:121.15:597:32First Quarter24Mon
25Tue9:526.210:107.23:590.74:100.96:007:31Waxing Gibbous25Tue
26Wed10:516.411:077.54:580.45:090.66:017:29Waxing Gibbous26Wed
27Thu11:466.85:540.06:050.26:027:27Waxing Gibbous27Thu
28Fri12:017.912:377.36:45-0.46:59-0.26:037:26Full Moon28Fri
29Sat12:548.31:277.77:35-0.87:51-0.66:047:24Full Moon29Sat
30Sun1:468.62:178.18:24-1.18:44-0.96:057:22Full Moon30Sun
31Mon2:388.73:078.49:14-1.29:36-1.16:067:21Waning 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 5:40 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 58% 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 (58% 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