Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

53°
H -°
L 51°
NNE
8mph
Low tide
5:16 am
Photo Credits

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

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 4h 29m at 5:16 am (1.0 ft)
Next high tide : 11:06 am (6.0 ft)
Sunset today : 6:41 pm
Sunrise tomorrow : 6:31 am
Moon phase : Waxing Gibbous (83% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Jun 1935

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:328.22:157.08:22-0.78:260.45:078:15New Moon1Sat
2Sun2:208.13:036.99:10-0.69:140.55:068:16New Moon2Sun
3Mon3:067.93:506.89:56-0.410:000.75:068:16Waxing Crescent3Mon
4Tue3:517.74:346.710:41-0.210:450.95:058:17Waxing Crescent4Tue
5Wed4:367.55:206.611:250.111:311.15:058:18Waxing Crescent5Wed
6Thu5:217.26:066.512:090.35:048:19Waxing Crescent6Thu
7Fri6:096.96:536.412:201.212:540.65:048:19First Quarter7Fri
8Sat6:596.67:406.41:111.31:390.85:048:20First Quarter8Sat
9Sun7:506.38:276.52:031.42:241.05:048:21First Quarter9Sun
10Mon8:436.19:146.62:571.43:111.15:038:21First Quarter10Mon
11Tue9:396.010:026.73:521.33:591.25:038:22Waxing Gibbous11Tue
12Wed10:346.010:496.94:461.14:491.25:038:22Waxing Gibbous12Wed
13Thu11:266.111:357.25:380.85:371.25:038:23Waxing Gibbous13Thu
14Fri12:156.26:250.56:231.05:038:23Waxing Gibbous14Fri
15Sat12:197.41:026.47:100.27:090.95:038:24Full Moon15Sat
16Sun1:037.71:486.67:55-0.17:550.75:038:24Full Moon16Sun
17Mon1:498.02:346.78:41-0.48:430.55:038:25Full Moon17Mon
18Tue2:368.13:216.99:27-0.69:320.35:038:25Waning Gibbous18Tue
19Wed3:258.24:097.110:14-0.710:230.25:038:25Waning Gibbous19Wed
20Thu4:158.24:597.311:03-0.711:160.25:038:26Waning Gibbous20Thu
21Fri5:078.15:527.411:53-0.65:038:26Waning Gibbous21Fri
22Sat6:047.86:477.512:130.212:46-0.55:048:26Third Quarter22Sat
23Sun7:047.57:437.61:130.21:41-0.35:048:26Third Quarter23Sun
24Mon8:067.28:407.72:160.22:370.05:048:26Third Quarter24Mon
25Tue9:116.99:397.73:200.23:350.35:058:26Waning Crescent25Tue
26Wed10:166.710:387.84:260.14:360.55:058:27Waning Crescent26Wed
27Thu11:206.611:347.85:300.05:360.65:058:27Waning Crescent27Thu
28Fri12:186.66:28-0.16:310.75:068:27Waning Crescent28Fri
29Sat12:277.81:116.77:21-0.27:230.75:068:27New Moon29Sat
30Sun1:177.82:016.78:10-0.28:110.75:078:27New Moon30Sun
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 spring phase. Tonight's moon is 83% 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 Waxing Gibbous (83% 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

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