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

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 4h 14m at 7:00 pm (0.2 ft)
Next high tide (tomorrow) : 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 - Apr 1961

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:147.21:337.37:400.07:560.05:256:09Full Moon1Sat
2Sun1:477.42:097.38:17-0.28:310.05:236:10Full Moon2Sun
3Mon2:217.62:467.28:55-0.39:090.05:216:11Waning Gibbous3Mon
4Tue2:577.63:267.29:35-0.49:490.15:206:13Waning Gibbous4Tue
5Wed3:377.74:117.010:19-0.410:340.25:186:14Waning Gibbous5Wed
6Thu4:227.65:016.811:09-0.311:240.45:166:15Third Quarter6Thu
7Fri5:157.55:596.712:04-0.25:156:16Third Quarter7Fri
8Sat6:147.47:026.612:210.51:040.05:136:17Third Quarter8Sat
9Sun7:197.38:096.71:240.62:080.05:116:18Third Quarter9Sun
10Mon8:287.39:176.92:320.63:16-0.15:096:20Waning Crescent10Mon
11Tue9:387.510:197.33:410.34:21-0.35:086:21Waning Crescent11Tue
12Wed10:417.711:147.74:470.05:19-0.55:066:22Waning Crescent12Wed
13Thu11:387.95:45-0.46:11-0.65:046:23New Moon13Thu
14Fri12:058.012:318.06:38-0.87:00-0.75:036:24New Moon14Fri
15Sat12:548.21:228.07:29-1.07:47-0.65:016:25New Moon15Sat
16Sun1:408.32:107.88:17-1.08:33-0.44:596:27New Moon16Sun
17Mon2:248.22:567.69:03-0.99:17-0.14:586:28Waxing Crescent17Mon
18Tue3:078.03:437.29:49-0.610:010.34:566:29Waxing Crescent18Tue
19Wed3:517.64:316.910:35-0.310:470.64:556:30Waxing Crescent19Wed
20Thu4:387.35:216.611:240.111:361.04:536:31Waxing Crescent20Thu
21Fri5:286.96:146.312:160.44:516:32First Quarter21Fri
22Sat6:226.67:096.112:291.31:100.74:506:33First Quarter22Sat
23Sun7:196.48:066.11:261.42:060.94:486:35First Quarter23Sun
24Mon8:186.39:016.22:251.53:031.04:476:36First Quarter24Mon
25Tue9:166.49:536.43:251.43:570.94:456:37Waxing Gibbous25Tue
26Wed10:096.510:396.74:201.14:440.84:446:38Waxing Gibbous26Wed
27Thu10:576.711:207.05:080.85:260.64:426:39Waxing Gibbous27Thu
28Fri11:406.911:587.35:500.56:040.44:416:40Waxing Gibbous28Fri
29Sat12:217.06:300.16:420.34:396:42Full Moon29Sat
30Sun12:357.52:027.28:10-0.28:200.15:387:43Full Moon30Sun
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 9:59 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 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