Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

53°
H -°
L 47°
N
4mph
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 4h 24m 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 - Jan 1939

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:377.09:146.32:360.73:230.57:154:18Waxing Gibbous1Sun
2Mon9:337.310:136.53:340.64:220.17:154:19Waxing Gibbous2Mon
3Tue10:287.811:086.84:310.35:17-0.47:154:20Waxing Gibbous3Tue
4Wed11:218.25:250.06:10-0.97:154:21Full Moon4Wed
5Thu12:027.212:148.56:19-0.37:02-1.27:154:22Full Moon5Thu
6Fri12:547.51:078.77:12-0.67:53-1.57:154:23Full Moon6Fri
7Sat1:477.82:008.88:05-0.88:44-1.67:154:24Waning Gibbous7Sat
8Sun2:387.92:538.78:59-0.99:35-1.57:144:25Waning Gibbous8Sun
9Mon3:308.03:478.49:54-0.810:27-1.27:144:26Waning Gibbous9Mon
10Tue4:247.94:448.010:51-0.611:21-0.87:144:27Waning Gibbous10Tue
11Wed5:217.75:457.511:52-0.37:144:28Third Quarter11Wed
12Thu6:197.66:487.012:18-0.412:55-0.17:134:29Third Quarter12Thu
13Fri7:197.47:526.61:170.02:000.17:134:31Third Quarter13Fri
14Sat8:207.28:586.42:180.43:070.27:134:32Waning Crescent14Sat
15Sun9:207.110:016.33:210.64:110.27:124:33Waning Crescent15Sun
16Mon10:177.210:566.34:220.75:080.17:124:34Waning Crescent16Mon
17Tue11:087.211:466.45:150.75:580.07:114:35Waning Crescent17Tue
18Wed11:547.36:030.76:420.07:114:37New Moon18Wed
19Thu12:306.512:367.36:450.67:22-0.17:104:38New Moon19Thu
20Fri1:106.61:157.37:250.57:58-0.17:094:39New Moon20Fri
21Sat1:486.71:527.38:010.58:32-0.17:094:40New Moon21Sat
22Sun2:236.72:277.38:370.59:04-0.17:084:42Waxing Crescent22Sun
23Mon2:566.73:017.19:120.59:360.07:074:43Waxing Crescent23Mon
24Tue3:296.73:367.09:480.510:100.17:064:44Waxing Crescent24Tue
25Wed4:036.74:146.810:270.510:460.37:064:45Waxing Crescent25Wed
26Thu4:406.74:556.611:090.611:270.47:054:47First Quarter26Thu
27Fri5:216.85:436.411:560.67:044:48First Quarter27Fri
28Sat6:086.86:356.212:120.512:480.67:034:49First Quarter28Sat
29Sun6:596.97:346.11:030.61:450.57:024:51First Quarter29Sun
30Mon7:577.18:396.21:580.72:470.37:014:52Waxing Gibbous30Mon
31Tue9:007.39:446.43:000.63:520.07:004:53Waxing Gibbous31Tue
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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