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

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : in 2h 56m at 1:13 am (0.5 ft)
Next high tide (tomorrow) : 7:05 am (7.3 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 - Mar 2036

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:067.13:227.29:330.09:51-0.16:185:33Waxing Crescent1Sat
2Sun3:417.24:027.010:13-0.110:310.06:165:34Waxing Crescent2Sun
3Mon4:207.34:476.910:580.011:160.26:145:35Waxing Crescent3Mon
4Tue5:067.35:386.711:490.06:135:37First Quarter4Tue
5Wed5:587.26:376.512:060.312:450.16:115:38First Quarter5Wed
6Thu6:577.27:426.41:020.51:470.16:095:39First Quarter6Thu
7Fri8:037.38:526.52:050.52:550.06:075:40Waxing Gibbous7Fri
8Sat9:127.410:006.83:130.54:03-0.26:065:42Waxing Gibbous8Sat
9Sun11:197.75:210.26:06-0.57:046:43Waxing Gibbous9Sun
10Mon12:007.112:198.16:23-0.27:02-0.97:026:44Waxing Gibbous10Mon
11Tue12:567.51:158.37:20-0.67:54-1.17:016:45Full Moon11Tue
12Wed1:477.92:088.48:13-0.98:44-1.26:596:46Full Moon12Wed
13Thu2:378.12:598.39:05-1.09:31-1.16:576:48Full Moon13Thu
14Fri3:238.13:478.19:54-1.010:17-0.86:556:49Waning Gibbous14Fri
15Sat4:098.04:367.710:42-0.811:02-0.46:546:50Waning Gibbous15Sat
16Sun4:547.85:257.311:31-0.511:490.06:526:51Waning Gibbous16Sun
17Mon5:427.56:176.812:22-0.16:506:52Waning Gibbous17Mon
18Tue6:327.17:126.412:380.51:160.26:486:54Third Quarter18Tue
19Wed7:266.88:106.11:310.92:130.66:476:55Third Quarter19Wed
20Thu8:236.59:105.92:281.23:140.86:456:56Third Quarter20Thu
21Fri9:246.410:115.93:291.44:170.96:436:57Third Quarter21Fri
22Sat10:256.411:076.04:321.45:150.86:416:58Waning Crescent22Sat
23Sun11:196.611:556.35:291.26:050.66:397:00Waning Crescent23Sun
24Mon12:076.86:180.96:480.46:387:01Waning Crescent24Mon
25Tue12:386.612:507.07:000.77:250.36:367:02Waning Crescent25Tue
26Wed1:166.81:307.27:390.48:000.16:347:03New Moon26Wed
27Thu1:527.12:087.38:160.18:350.06:327:04New Moon27Thu
28Fri2:267.32:457.48:53-0.19:09-0.16:317:05New Moon28Fri
29Sat3:007.53:227.49:30-0.39:45-0.16:297:07New Moon29Sat
30Sun3:357.64:017.310:10-0.410:24-0.16:277:08Waxing Crescent30Sun
31Mon4:137.74:437.210:52-0.511:070.06:257:09Waxing Crescent31Mon
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 4:09 am — 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