Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

52°
H 66°
L 45°
NNE
6mph
Low tide
2:25 pm
Photo Credits

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 5h 06m at 2:25 pm (1.7 ft)
Next high tide : 8:24 pm (6.4 ft)
Sunset today : 6:46 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Jun 1938

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:418.84:257.710:29-1.210:43-0.25:078:15Waxing Crescent1Wed
2Thu4:368.65:227.611:24-1.111:41-0.15:068:16Waxing Crescent2Thu
3Fri5:358.26:217.612:20-0.85:068:17First Quarter3Fri
4Sat6:367.97:217.512:430.11:19-0.55:058:17First Quarter4Sat
5Sun7:407.58:217.51:470.32:18-0.25:058:18First Quarter5Sun
6Mon8:447.19:207.42:530.43:180.15:048:19First Quarter6Mon
7Tue9:486.910:187.53:590.44:170.45:048:19Waxing Gibbous7Tue
8Wed10:506.711:127.55:020.35:150.65:048:20Waxing Gibbous8Wed
9Thu11:476.75:590.26:070.75:048:21Waxing Gibbous9Thu
10Fri12:027.512:386.66:500.16:550.85:038:21Waxing Gibbous10Fri
11Sat12:477.61:256.67:360.07:380.85:038:22Full Moon11Sat
12Sun1:307.52:086.68:190.08:190.95:038:22Full Moon12Sun
13Mon2:107.52:496.68:580.08:580.95:038:23Full Moon13Mon
14Tue2:487.53:286.69:360.19:360.95:038:23Full Moon14Tue
15Wed3:267.44:056.610:110.110:131.05:038:24Waning Gibbous15Wed
16Thu4:027.34:426.510:460.210:521.05:038:24Waning Gibbous16Thu
17Fri4:407.25:206.511:230.311:321.15:038:25Waning Gibbous17Fri
18Sat5:197.05:596.612:010.45:038:25Waning Gibbous18Sat
19Sun6:026.86:416.712:161.112:420.45:038:25Third Quarter19Sun
20Mon6:496.77:256.81:031.11:250.55:038:26Third Quarter20Mon
21Tue7:396.68:117.01:531.02:110.65:048:26Third Quarter21Tue
22Wed8:326.59:017.22:460.83:010.65:048:26Third Quarter22Wed
23Thu9:316.59:557.53:430.63:550.65:048:26Waning Crescent23Thu
24Fri10:316.610:517.94:430.34:520.45:048:26Waning Crescent24Fri
25Sat11:316.811:478.25:42-0.15:490.25:058:26Waning Crescent25Sat
26Sun12:287.16:38-0.66:450.05:058:27New Moon26Sun
27Mon12:418.61:247.47:32-0.97:41-0.35:058:27New Moon27Mon
28Tue1:378.82:207.68:27-1.28:36-0.45:068:27New Moon28Tue
29Wed2:328.93:157.89:20-1.39:32-0.55:068:27Waxing Crescent29Wed
30Thu3:278.84:097.910:13-1.310:28-0.45:078:26Waxing Crescent30Thu
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 neap phase. Tonight's moon is 58% 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 minimum.

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 First Quarter (58% illuminated). This places Squamscott River, Great Bay, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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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