Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

74°
H -°
L 62°
S
3mph
Low tide
12:30 am
Photo Credits

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : in 5h 50m at 12:30 am (0.6 ft)
Next high tide (tomorrow) : 6:23 am (6.2 ft)
Sunset today : 6:52 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Dec 1941

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:387.35:470.66:220.16:554:10Waxing Gibbous1Mon
2Tue12:086.712:177.46:270.67:010.06:564:09Full Moon2Tue
3Wed12:496.712:547.47:040.77:380.06:574:09Full Moon3Wed
4Thu1:286.71:307.47:390.78:130.06:584:09Full Moon4Thu
5Fri2:056.62:057.38:140.78:480.06:594:09Full Moon5Fri
6Sat2:416.62:407.38:500.89:230.17:004:09Waning Gibbous6Sat
7Sun3:176.53:167.29:270.810:000.17:014:09Waning Gibbous7Sun
8Mon3:556.53:557.110:070.910:400.27:024:08Waning Gibbous8Mon
9Tue4:356.54:397.010:520.911:240.27:034:08Waning Gibbous9Tue
10Wed5:206.55:286.911:410.97:044:08Third Quarter10Wed
11Thu6:096.66:236.812:120.312:350.87:054:08Third Quarter11Thu
12Fri7:026.87:216.81:030.31:320.67:054:09Third Quarter12Fri
13Sat7:577.18:236.91:570.22:330.47:064:09Waning Crescent13Sat
14Sun8:547.59:277.02:550.13:350.07:074:09Waning Crescent14Sun
15Mon9:527.910:277.33:54-0.14:36-0.57:084:09Waning Crescent15Mon
16Tue10:478.311:257.54:51-0.35:33-0.97:084:09Waning Crescent16Tue
17Wed11:418.75:46-0.56:28-1.37:094:10New Moon17Wed
18Thu12:217.712:348.96:40-0.77:21-1.57:104:10New Moon18Thu
19Fri1:157.81:288.97:34-0.78:14-1.67:104:10New Moon19Fri
20Sat2:097.82:218.88:27-0.79:07-1.47:114:11Waxing Crescent20Sat
21Sun3:027.83:148.59:21-0.59:59-1.27:114:11Waxing Crescent21Sun
22Mon3:557.64:098.110:15-0.210:52-0.87:124:12Waxing Crescent22Mon
23Tue4:517.45:067.611:130.111:48-0.47:124:12First Quarter23Tue
24Wed5:477.16:057.112:130.47:134:13First Quarter24Wed
25Thu6:447.07:056.712:440.11:150.67:134:13First Quarter25Thu
26Fri7:416.88:066.41:400.42:180.77:144:14First Quarter26Fri
27Sat8:376.89:076.22:370.73:200.77:144:15Waxing Gibbous27Sat
28Sun9:326.810:046.23:340.94:190.67:144:16Waxing Gibbous28Sun
29Mon10:226.910:556.24:280.95:100.57:144:16Waxing Gibbous29Mon
30Tue11:077.011:416.35:150.95:550.37:154:17Waxing Gibbous30Tue
31Wed11:497.25:570.86:360.17:154:18Full 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 transitional phase. Tonight's moon is 30% 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 shifting between spring and neap.

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 (30% illuminated). This places Squamscott River, Great Bay, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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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