Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

60°
H 68°
L 53°
NNE
3mph
Low tide
11:07 am
Photo Credits

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

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 1h 55m at 11:07 am (0.5 ft)
Next high tide : 4:58 pm (7.3 ft)
Sunset today : 6:54 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Apr 1945

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:187.14:456.610:540.211:030.76:257:09Waning Gibbous1Sun
2Mon4:517.05:246.411:310.311:410.96:237:10Waning Gibbous2Mon
3Tue5:296.96:076.212:140.56:227:11Waning Gibbous3Tue
4Wed6:136.86:566.012:241.11:010.66:207:12Third Quarter4Wed
5Thu7:036.77:515.91:131.21:540.76:187:14Third Quarter5Thu
6Fri8:016.78:516.02:081.32:530.66:167:15Third Quarter6Fri
7Sat9:036.89:546.23:091.23:550.56:157:16Waning Crescent7Sat
8Sun10:097.110:546.74:130.94:570.26:137:17Waning Crescent8Sun
9Mon11:117.511:497.25:170.55:54-0.26:117:18Waning Crescent9Mon
10Tue12:087.96:15-0.16:46-0.66:107:19Waning Crescent10Tue
11Wed12:407.81:028.27:09-0.77:36-0.96:087:21New Moon11Wed
12Thu1:298.31:558.38:02-1.18:25-1.16:067:22New Moon12Thu
13Fri2:178.62:488.48:54-1.49:14-1.06:057:23New Moon13Fri
14Sat3:068.83:408.29:45-1.510:03-0.86:037:24Waxing Crescent14Sat
15Sun3:558.74:337.910:38-1.410:53-0.56:017:25Waxing Crescent15Sun
16Mon4:468.45:287.511:32-1.111:470.06:007:26Waxing Crescent16Mon
17Tue5:418.06:287.112:29-0.75:587:28First Quarter17Tue
18Wed6:407.67:316.712:450.41:31-0.25:567:29First Quarter18Wed
19Thu7:447.28:366.51:480.82:360.25:557:30First Quarter19Thu
20Fri8:506.99:406.42:551.13:420.45:537:31First Quarter20Fri
21Sat9:566.710:416.54:041.24:450.55:527:32Waxing Gibbous21Sat
22Sun10:576.711:336.65:081.15:410.55:507:33Waxing Gibbous22Sun
23Mon11:516.86:030.86:290.55:487:34Waxing Gibbous23Mon
24Tue12:196.812:376.86:510.67:100.55:477:36Waxing Gibbous24Tue
25Wed12:597.01:196.97:320.47:470.55:457:37Full Moon25Wed
26Thu1:367.21:596.98:110.38:210.55:447:38Full Moon26Thu
27Fri2:107.32:366.88:460.18:530.65:427:39Full Moon27Fri
28Sat2:437.33:126.89:200.19:250.75:417:40Full Moon28Sat
29Sun3:157.33:476.79:540.19:590.85:407:41Waning Gibbous29Sun
30Mon3:477.34:236.510:290.110:350.95:387:43Waning Gibbous30Mon
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 21% 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 (21% 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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