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

TIDE TIMES for Monday, August 3, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 3h 39m at 11:29 am (0.1 ft)
Next high tide : 5:22 pm (7.2 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 5:36 am
Moon phase : Waning Gibbous (75% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:107.43:446.79:510.09:540.85:367:44Waxing Crescent1Sat
2Sun3:447.34:206.610:260.110:310.85:357:45Waxing Crescent2Sun
3Mon4:207.34:586.511:040.111:110.95:337:47Waxing Crescent3Mon
4Tue4:597.25:406.511:460.211:561.05:327:48Waxing Crescent4Tue
5Wed5:447.16:286.512:320.25:317:49First Quarter5Wed
6Thu6:347.17:196.612:461.01:220.35:297:50First Quarter6Thu
7Fri7:307.08:146.81:410.92:160.25:287:51First Quarter7Fri
8Sat8:317.19:127.12:400.73:120.25:277:52First Quarter8Sat
9Sun9:347.110:107.53:430.54:110.05:267:53Waxing Gibbous9Sun
10Mon10:387.311:077.94:470.15:10-0.25:257:54Waxing Gibbous10Mon
11Tue11:397.55:47-0.46:06-0.45:237:55Waxing Gibbous11Tue
12Wed12:018.412:367.76:44-0.96:59-0.55:227:57Full Moon12Wed
13Thu12:548.71:327.97:39-1.27:52-0.65:217:58Full Moon13Thu
14Fri1:468.92:277.98:32-1.48:45-0.65:207:59Full Moon14Fri
15Sat2:398.93:207.89:25-1.49:38-0.45:198:00Waning Gibbous15Sat
16Sun3:318.74:147.710:18-1.210:30-0.25:188:01Waning Gibbous16Sun
17Mon4:238.45:087.411:11-0.911:250.15:178:02Waning Gibbous17Mon
18Tue5:188.06:047.212:05-0.65:168:03Waning Gibbous18Tue
19Wed6:157.67:027.012:220.51:02-0.25:158:04Third Quarter19Wed
20Thu7:147.27:596.81:230.71:580.25:148:05Third Quarter20Thu
21Fri8:146.88:556.82:240.92:540.55:148:06Third Quarter21Fri
22Sat9:136.59:496.83:261.03:500.75:138:07Third Quarter22Sat
23Sun10:126.410:416.94:271.04:440.95:128:08Waning Crescent23Sun
24Mon11:076.411:287.05:230.85:340.95:118:09Waning Crescent24Mon
25Tue11:576.46:120.66:180.95:108:10Waning Crescent25Tue
26Wed12:117.112:426.56:560.56:590.95:108:11Waning Crescent26Wed
27Thu12:517.31:256.57:370.37:370.95:098:12New Moon27Thu
28Fri1:297.42:056.68:150.28:140.95:088:12New Moon28Fri
29Sat2:067.42:446.68:510.18:510.85:088:13New Moon29Sat
30Sun2:437.53:226.69:270.09:280.85:078:14New Moon30Sun
31Mon3:197.53:596.710:04-0.110:080.85:078:15Waxing 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 2:25 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 75% 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 Waning Gibbous (75% 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