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

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 7:48 am (-0.7 ft)
Next high tide (tomorrow) : in 4h 34m at 12:58 am (8.3 ft)
Sunset today : 7:52 pm
Sunrise tomorrow : 5:45 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Oct 1960

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:527.111:137.84:55-0.15:170.26:416:25Waxing Gibbous1Sat
2Sun11:507.55:55-0.36:17-0.26:426:23Waxing Gibbous2Sun
3Mon12:117.912:427.86:49-0.57:12-0.46:436:21Full Moon3Mon
4Tue1:058.01:318.07:38-0.68:02-0.66:446:19Full Moon4Tue
5Wed1:558.02:178.18:25-0.58:50-0.76:456:18Full Moon5Wed
6Thu2:437.93:018.09:10-0.39:36-0.66:466:16Full Moon6Thu
7Fri3:297.63:447.99:53-0.110:21-0.46:486:14Waning Gibbous7Fri
8Sat4:147.34:267.610:350.211:06-0.16:496:13Waning Gibbous8Sat
9Sun4:597.05:097.311:180.611:520.26:506:11Waning Gibbous9Sun
10Mon5:476.65:567.012:040.96:516:09Third Quarter10Mon
11Tue6:386.46:486.712:410.512:541.26:526:07Third Quarter11Tue
12Wed7:326.27:436.61:340.81:471.46:536:06Third Quarter12Wed
13Thu8:276.18:406.52:291.02:441.56:556:04Third Quarter13Thu
14Fri9:236.19:376.53:251.03:421.46:566:02Third Quarter14Fri
15Sat10:176.310:326.64:211.04:391.36:576:01Waning Crescent15Sat
16Sun11:066.511:226.85:120.85:311.06:585:59Waning Crescent16Sun
17Mon11:506.85:560.66:160.66:595:58Waning Crescent17Mon
18Tue12:077.012:297.26:370.46:580.27:015:56Waning Crescent18Tue
19Wed12:497.21:077.57:150.17:38-0.17:025:54New Moon19Wed
20Thu1:307.41:467.87:54-0.18:20-0.47:035:53New Moon20Thu
21Fri2:127.52:258.18:35-0.29:03-0.77:045:51New Moon21Fri
22Sat2:567.63:078.29:17-0.29:48-0.87:065:50Waxing Crescent22Sat
23Sun3:417.63:528.210:02-0.210:35-0.87:075:48Waxing Crescent23Sun
24Mon4:297.54:418.210:50-0.111:27-0.77:085:47Waxing Crescent24Mon
25Tue5:227.35:358.011:430.17:095:45First Quarter25Tue
26Wed6:217.16:367.712:23-0.512:420.37:115:44First Quarter26Wed
27Thu7:257.07:427.51:24-0.31:460.57:125:42First Quarter27Thu
28Fri8:317.08:507.42:28-0.12:530.57:135:41First Quarter28Fri
29Sat9:367.19:597.43:340.04:030.47:145:40Waxing Gibbous29Sat
30Sun9:397.310:037.43:390.04:100.26:164:38Waxing Gibbous30Sun
31Mon10:357.611:007.54:39-0.15:09-0.16:174:37Waxing 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 4:23 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 spring phase. Tonight's moon is 2% 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 maximum.

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 New Moon (2% illuminated). This places Squamscott River, Great Bay, NH in a spring tide cycle, so tidal ranges are near their weekly maximum 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