Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

70°
H -°
L 61°
S
3mph
Low tide
12:30 am
Photo Credits

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : in 4h 18m at 12:30 am (0.6 ft)
Next high tide (tomorrow) : 6:23 am (6.2 ft)
Sunset today : 6:52 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Nov 1941

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:257.411:497.15:340.36:010.16:184:36Waxing Gibbous1Sat
2Sun12:077.46:170.36:440.06:194:35Full Moon2Sun
3Mon12:327.112:457.56:550.47:230.06:204:33Full Moon3Mon
4Tue1:127.01:217.57:310.58:000.06:214:32Full Moon4Tue
5Wed1:506.91:567.48:060.68:350.06:234:31Full Moon5Wed
6Thu2:276.82:307.38:400.79:100.16:244:30Waning Gibbous6Thu
7Fri3:046.63:057.29:160.99:470.36:254:28Waning Gibbous7Fri
8Sat3:416.53:427.09:531.010:260.46:274:27Waning Gibbous8Sat
9Sun4:216.34:236.910:341.111:090.56:284:26Waning Gibbous9Sun
10Mon5:066.25:096.811:201.211:560.66:294:25Third Quarter10Mon
11Tue5:546.26:016.712:111.26:304:24Third Quarter11Tue
12Wed6:456.36:566.712:460.61:061.26:324:23Third Quarter12Wed
13Thu7:396.57:556.81:390.62:031.06:334:22Third Quarter13Thu
14Fri8:336.98:557.02:340.43:030.66:344:21Waning Crescent14Fri
15Sat9:287.39:547.23:300.24:030.16:364:20Waning Crescent15Sat
16Sun10:207.810:507.64:24-0.14:59-0.46:374:19Waning Crescent16Sun
17Mon11:118.311:437.85:17-0.45:52-0.96:384:18New Moon17Mon
18Tue12:018.76:08-0.76:44-1.36:394:17New Moon18Tue
19Wed12:378.012:528.96:59-0.87:36-1.56:414:17New Moon19Wed
20Thu1:308.11:449.07:51-0.88:29-1.66:424:16Waxing Crescent20Thu
21Fri2:248.02:368.98:43-0.79:22-1.46:434:15Waxing Crescent21Fri
22Sat3:187.83:318.69:37-0.510:17-1.16:444:14Waxing Crescent22Sat
23Sun4:157.64:298.210:34-0.111:15-0.76:464:14Waxing Crescent23Sun
24Mon5:157.35:317.711:360.26:474:13First Quarter24Mon
25Tue6:187.16:357.312:16-0.312:410.56:484:13First Quarter25Tue
26Wed7:197.07:397.01:180.01:470.66:494:12First Quarter26Wed
27Thu8:197.08:436.82:190.32:530.76:504:11Waxing Gibbous27Thu
28Fri9:177.09:436.73:190.53:550.66:514:11Waxing Gibbous28Fri
29Sat10:097.110:376.64:150.64:500.46:534:11Waxing Gibbous29Sat
30Sun10:567.211:256.75:040.65:390.26:544:10Waxing Gibbous30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

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Common Questions About Squamscott River, Great Bay, NH Tides

Collapse All
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 Waxing 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

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