Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

64°
H -°
L 45°
ENE
7mph
Low tide
5:22 pm
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 56m at 5:22 pm (1.4 ft)
Next high tide : 11:15 pm (6.8 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 - Jan 1934

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:346.31:337.37:410.98:200.07:154:19Full Moon1Mon
2Tue2:116.32:097.28:180.98:540.17:154:20Full Moon2Tue
3Wed2:466.42:447.28:540.89:270.17:154:20Waning Gibbous3Wed
4Thu3:206.43:197.19:300.810:010.27:154:21Waning Gibbous4Thu
5Fri3:556.43:576.910:090.810:370.27:154:22Waning Gibbous5Fri
6Sat4:316.54:386.710:510.811:160.37:154:23Waning Gibbous6Sat
7Sun5:106.65:236.511:380.811:580.57:154:24Third Quarter7Sun
8Mon5:546.76:156.312:290.77:144:25Third Quarter8Mon
9Tue6:426.87:116.212:450.61:240.67:144:26Third Quarter9Tue
10Wed7:357.08:136.11:370.72:240.57:144:27Waning Crescent10Wed
11Thu8:347.39:206.22:350.73:280.27:144:29Waning Crescent11Thu
12Fri9:367.610:256.43:370.64:33-0.27:134:30Waning Crescent12Fri
13Sat10:377.911:256.74:400.45:32-0.67:134:31Waning Crescent13Sat
14Sun11:368.35:390.16:29-0.97:134:32New Moon14Sun
15Mon12:217.012:328.56:36-0.27:23-1.27:124:33New Moon15Mon
16Tue1:167.31:288.77:31-0.58:15-1.47:124:34New Moon16Tue
17Wed2:087.62:218.68:26-0.69:05-1.37:114:36Waxing Crescent17Wed
18Thu2:597.73:148.49:20-0.69:55-1.17:104:37Waxing Crescent18Thu
19Fri3:507.74:077.910:14-0.510:44-0.87:104:38Waxing Crescent19Fri
20Sat4:417.65:027.411:11-0.311:36-0.37:094:39First Quarter20Sat
21Sun5:347.46:006.912:090.07:094:41First Quarter21Sun
22Mon6:287.27:016.412:290.21:100.37:084:42First Quarter22Mon
23Tue7:246.98:036.01:240.72:130.57:074:43First Quarter23Tue
24Wed8:226.89:075.82:221.03:180.67:064:44Waxing Gibbous24Wed
25Thu9:226.710:085.83:241.34:200.67:054:46Waxing Gibbous25Thu
26Fri10:186.711:015.94:231.35:140.57:054:47Waxing Gibbous26Fri
27Sat11:086.811:486.05:161.26:020.47:044:48Waxing Gibbous27Sat
28Sun11:537.06:011.06:440.27:034:50Full Moon28Sun
29Mon12:316.212:347.16:420.97:220.17:024:51Full Moon29Mon
30Tue1:106.31:127.27:200.77:560.07:014:52Full Moon30Tue
31Wed1:456.51:487.37:560.68:27-0.17:004:54Full Moon31Wed
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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