Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

49°
H 64°
L 44°
N
3mph
High tide
8:15 am
Photo Credits

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 2:25 pm (1.7 ft)
Next high tide : in 3h 31m at 8:15 am (5.7 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 - Dec 1938

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:446.48:036.21:400.92:131.26:544:10First Quarter1Thu
2Fri8:336.78:596.32:300.93:090.96:564:10Waxing Gibbous2Fri
3Sat9:227.09:536.43:220.84:030.66:574:09Waxing Gibbous3Sat
4Sun10:107.310:446.74:130.64:540.16:584:09Waxing Gibbous4Sun
5Mon10:577.711:336.95:020.45:43-0.36:594:09Waxing Gibbous5Mon
6Tue11:448.15:500.16:31-0.77:004:09Full Moon6Tue
7Wed12:227.212:328.46:38-0.17:19-1.07:014:09Full Moon7Wed
8Thu1:127.41:218.67:28-0.38:09-1.27:024:08Full Moon8Thu
9Fri2:027.52:128.68:19-0.48:59-1.37:034:08Waning Gibbous9Fri
10Sat2:547.63:058.59:12-0.49:51-1.27:034:08Waning Gibbous10Sat
11Sun3:477.64:018.310:07-0.310:46-0.97:044:08Waning Gibbous11Sun
12Mon4:447.55:007.911:06-0.111:43-0.67:054:09Third Quarter12Mon
13Tue5:447.46:047.512:100.17:064:09Third Quarter13Tue
14Wed6:457.47:107.112:42-0.31:160.27:074:09Third Quarter14Wed
15Thu7:467.48:166.81:430.02:240.27:074:09Third Quarter15Thu
16Fri8:477.49:226.72:450.33:310.27:084:09Waning Crescent16Fri
17Sat9:457.410:236.63:470.44:330.07:094:10Waning Crescent17Sat
18Sun10:397.511:176.74:440.55:28-0.17:104:10Waning Crescent18Sun
19Mon11:287.65:350.56:17-0.27:104:10Waning Crescent19Mon
20Tue12:066.712:137.66:210.57:01-0.37:114:11New Moon20Tue
21Wed12:516.712:557.67:040.67:42-0.27:114:11New Moon21Wed
22Thu1:326.71:357.57:440.68:20-0.27:124:12New Moon22Thu
23Fri2:116.72:127.48:220.68:56-0.17:124:12New Moon23Fri
24Sat2:486.62:497.38:590.79:310.07:134:13Waxing Crescent24Sat
25Sun3:256.63:267.19:370.810:060.17:134:13Waxing Crescent25Sun
26Mon4:026.54:046.910:160.810:430.37:134:14Waxing Crescent26Mon
27Tue4:406.54:466.710:580.911:230.47:144:15Waxing Crescent27Tue
28Wed5:216.55:316.511:441.07:144:15First Quarter28Wed
29Thu6:046.56:206.312:050.612:331.07:144:16First Quarter29Thu
30Fri6:516.67:136.212:510.71:260.97:144:17First Quarter30Fri
31Sat7:406.88:116.11:400.82:220.77:154:18First Quarter31Sat
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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