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

TIDE TIMES for Thursday, July 9, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 3:59 am (0.2 ft)
Next high tide : in 5h 57m at 9:08 pm (7.6 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Oct 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:175.88:306.92:220.82:321.46:416:25First Quarter1Sun
2Mon9:226.09:367.13:250.73:381.26:426:23Waxing Gibbous2Mon
3Tue10:256.410:417.54:290.44:440.86:436:21Waxing Gibbous3Tue
4Wed11:227.011:407.85:280.05:460.26:446:20Waxing Gibbous4Wed
5Thu12:147.56:21-0.46:42-0.36:456:18Full Moon5Thu
6Fri12:358.11:038.17:11-0.77:35-0.86:466:16Full Moon6Fri
7Sat1:288.31:518.57:59-0.88:28-1.26:476:15Full Moon7Sat
8Sun2:218.22:398.78:47-0.89:19-1.36:496:13Full Moon8Sun
9Mon3:138.13:278.69:35-0.610:11-1.26:506:11Waning Gibbous9Mon
10Tue4:057.84:178.410:25-0.211:04-0.96:516:09Waning Gibbous10Tue
11Wed4:597.35:098.011:160.26:526:08Waning Gibbous11Wed
12Thu5:576.96:077.612:00-0.512:120.66:536:06Third Quarter12Thu
13Fri6:596.57:117.21:010.01:131.06:546:04Third Quarter13Fri
14Sat8:036.28:166.92:050.42:191.36:566:03Third Quarter14Sat
15Sun9:076.19:216.73:110.73:261.46:576:01Third Quarter15Sun
16Mon10:086.210:236.74:140.84:311.36:585:59Waning Crescent16Mon
17Tue11:026.411:176.75:110.75:291.16:595:58Waning Crescent17Tue
18Wed11:486.65:590.76:170.97:005:56Waning Crescent18Wed
19Thu12:046.812:286.86:400.67:000.67:025:55Waning Crescent19Thu
20Fri12:476.81:057.07:160.67:380.47:035:53New Moon20Fri
21Sat1:266.81:387.27:490.68:140.37:045:51New Moon21Sat
22Sun2:046.82:117.28:210.78:480.27:055:50New Moon22Sun
23Mon2:406.72:427.38:530.89:230.27:075:48New Moon23Mon
24Tue3:156.63:147.39:260.99:580.27:085:47Waxing Crescent24Tue
25Wed3:516.53:497.210:021.010:360.37:095:45Waxing Crescent25Wed
26Thu4:286.34:287.210:401.111:180.47:105:44Waxing Crescent26Thu
27Fri5:116.15:137.111:241.27:125:43Waxing Crescent27Fri
28Sat6:006.06:057.012:060.512:141.37:135:41First Quarter28Sat
29Sun5:576.06:057.01:010.612:111.36:144:40First Quarter29Sun
30Mon6:586.17:097.012:590.61:141.26:154:38First Quarter30Mon
31Tue8:006.48:157.12:000.42:200.96:174:37Waxing Gibbous31Tue
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 12:33 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 30% 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 Crescent (30% 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