Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

58°
H 68°
L 62°
S
2mph
Low tide
9:45 am
Photo Credits

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

TIDE TIMES for Sunday, September 13, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 4h 57m at 9:45 am (-0.2 ft)
Next high tide : 3:36 pm (7.7 ft)
Sunset today : 6:57 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Jan 1950

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:056.911:476.05:111.35:580.47:154:19Waxing Gibbous1Sun
2Mon11:477.15:531.16:380.27:154:20Full Moon2Mon
3Tue12:296.112:287.36:341.07:180.07:154:21Full Moon3Tue
4Wed1:106.31:087.57:140.87:57-0.27:154:21Full Moon4Wed
5Thu1:496.41:487.67:540.68:36-0.37:154:22Full Moon5Thu
6Fri2:286.52:287.78:360.59:15-0.47:154:23Waning Gibbous6Fri
7Sat3:076.73:117.79:200.49:56-0.57:154:24Waning Gibbous7Sat
8Sun3:496.93:567.610:070.310:40-0.47:144:25Waning Gibbous8Sun
9Mon4:347.04:477.410:570.211:27-0.37:144:26Third Quarter9Mon
10Tue5:237.15:427.111:530.27:144:28Third Quarter10Tue
11Wed6:167.36:426.812:18-0.112:520.27:144:29Third Quarter11Wed
12Thu7:127.37:466.51:120.11:550.17:134:30Third Quarter12Thu
13Fri8:117.48:556.42:110.43:020.07:134:31Waning Crescent13Fri
14Sat9:157.510:036.43:140.54:10-0.17:124:32Waning Crescent14Sat
15Sun10:177.711:066.54:180.55:13-0.47:124:33Waning Crescent15Sun
16Mon11:167.85:190.46:10-0.57:114:34New Moon16Mon
17Tue12:036.712:117.96:150.37:04-0.77:114:36New Moon17Tue
18Wed12:566.81:038.07:080.27:53-0.77:104:37New Moon18Wed
19Thu1:456.81:527.97:580.28:39-0.67:104:38New Moon19Thu
20Fri2:316.92:387.78:450.29:23-0.57:094:39Waxing Crescent20Fri
21Sat3:146.83:227.49:310.310:04-0.27:084:41Waxing Crescent21Sat
22Sun3:566.84:067.110:160.510:440.17:084:42Waxing Crescent22Sun
23Mon4:396.74:516.711:030.611:250.47:074:43Waxing Crescent23Mon
24Tue5:226.65:406.311:520.87:064:44First Quarter24Tue
25Wed6:076.56:315.912:080.812:431.07:054:46First Quarter25Wed
26Thu6:546.47:275.612:531.11:371.17:044:47First Quarter26Thu
27Fri7:446.38:265.51:421.42:351.17:044:48First Quarter27Fri
28Sat8:396.39:285.42:371.53:361.17:034:50Waxing Gibbous28Sat
29Sun9:366.410:245.63:351.64:340.97:024:51Waxing Gibbous29Sun
30Mon10:296.711:145.84:311.45:240.67:014:52Waxing Gibbous30Mon
31Tue11:167.05:201.26:080.27:004:54Waxing 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 spring phase. Tonight's moon is 7% 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 Crescent (7% 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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