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

TIDE TIMES for Friday, July 24, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 4:46 pm (1.5 ft)
Next high tide : in 3h 03m at 10:32 am (5.8 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 5:26 am
Moon phase : Waxing Gibbous (79% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jun 1991

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:197.25:036.311:070.311:101.25:078:15Waning Gibbous1Sat
2Sun4:597.05:446.311:460.411:531.35:068:16Waning Gibbous2Sun
3Mon5:416.96:266.312:270.55:068:17Third Quarter3Mon
4Tue6:276.77:106.412:401.31:090.65:058:18Third Quarter4Tue
5Wed7:156.67:556.61:291.31:540.75:058:18Third Quarter5Wed
6Thu8:076.58:416.82:211.22:400.75:048:19Third Quarter6Thu
7Fri9:026.49:317.13:151.03:300.75:048:20Waning Crescent7Fri
8Sat10:006.510:227.54:120.64:240.75:048:20Waning Crescent8Sat
9Sun10:596.611:157.85:100.25:180.55:048:21Waning Crescent9Sun
10Mon11:556.86:06-0.26:120.35:038:22Waning Crescent10Mon
11Tue12:078.212:517.07:00-0.67:050.15:038:22New Moon11Tue
12Wed1:008.51:467.27:53-0.98:000.05:038:23New Moon12Wed
13Thu1:558.72:417.48:47-1.18:55-0.15:038:23New Moon13Thu
14Fri2:508.83:367.59:41-1.29:50-0.25:038:24Waxing Crescent14Fri
15Sat3:458.74:317.510:35-1.110:47-0.15:038:24Waxing Crescent15Sat
16Sun4:428.55:277.511:29-0.911:460.05:038:24Waxing Crescent16Sun
17Mon5:408.16:257.512:25-0.75:038:25First Quarter17Mon
18Tue6:417.77:237.512:480.21:21-0.35:038:25First Quarter18Tue
19Wed7:437.28:207.41:520.32:180.15:038:25First Quarter19Wed
20Thu8:456.99:167.42:560.43:150.45:048:26First Quarter20Thu
21Fri9:486.610:127.34:000.54:120.75:048:26Waxing Gibbous21Fri
22Sat10:496.411:067.35:020.55:090.95:048:26Waxing Gibbous22Sat
23Sun11:466.311:557.35:580.46:011.05:048:26Waxing Gibbous23Sun
24Mon12:366.36:490.36:491.15:048:26Waxing Gibbous24Mon
25Tue12:417.31:226.37:340.27:321.15:058:27Full Moon25Tue
26Wed1:247.42:066.38:160.28:131.15:058:27Full Moon26Wed
27Thu2:057.42:466.48:560.28:521.15:068:27Full Moon27Thu
28Fri2:437.43:246.49:320.29:291.15:068:27Full Moon28Fri
29Sat3:207.34:006.510:070.210:071.15:068:27Waning Gibbous29Sat
30Sun3:567.34:356.510:410.210:451.15:078:27Waning Gibbous30Sun
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 1:39 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 79% 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 Waxing Gibbous (79% 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