Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

44°
H 70°
L 53°
NNW
4mph
Low tide
11:07 am
Photo Credits

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

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 4h 25m at 11:07 am (0.5 ft)
Next high tide : 4:58 pm (7.3 ft)
Sunset today : 6:54 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Jul 1945

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:027.66:467.212:130.512:47-0.35:078:26Third Quarter1Sun
2Mon6:597.47:407.31:100.51:40-0.25:088:26Third Quarter2Mon
3Tue7:597.28:367.52:100.42:34-0.15:088:26Third Quarter3Tue
4Wed9:027.19:347.73:120.23:320.15:098:26Waning Crescent4Wed
5Thu10:077.010:337.94:170.04:320.15:108:25Waning Crescent5Thu
6Fri11:127.011:318.15:21-0.25:320.25:108:25Waning Crescent6Fri
7Sat12:127.16:21-0.56:290.25:118:25Waning Crescent7Sat
8Sun12:268.31:097.17:17-0.77:230.25:128:24New Moon8Sun
9Mon1:198.32:037.28:10-0.88:160.25:128:24New Moon9Mon
10Tue2:118.32:547.29:01-0.89:070.25:138:24New Moon10Tue
11Wed3:018.23:437.19:49-0.69:560.45:148:23Waxing Crescent11Wed
12Thu3:488.04:297.010:36-0.410:440.55:158:23Waxing Crescent12Thu
13Fri4:357.75:166.911:21-0.211:320.75:158:22Waxing Crescent13Fri
14Sat5:227.46:026.812:060.15:168:21Waxing Crescent14Sat
15Sun6:117.06:496.712:220.912:510.45:178:21First Quarter15Sun
16Mon7:016.67:366.71:131.11:360.75:188:20First Quarter16Mon
17Tue7:526.38:236.62:051.22:220.95:198:19First Quarter17Tue
18Wed8:466.19:126.62:591.23:101.15:208:19First Quarter18Wed
19Thu9:426.010:036.73:551.24:001.35:218:18Waxing Gibbous19Thu
20Fri10:395.910:526.84:511.14:521.35:228:17Waxing Gibbous20Fri
21Sat11:326.011:397.05:430.85:421.35:238:16Waxing Gibbous21Sat
22Sun12:206.16:300.66:281.15:238:15Waxing Gibbous22Sun
23Mon12:247.31:056.37:140.37:120.95:248:15Full Moon23Mon
24Tue1:087.51:496.57:560.07:560.75:258:14Full Moon24Tue
25Wed1:517.82:326.78:39-0.28:410.55:268:13Full Moon25Wed
26Thu2:357.93:157.09:21-0.49:270.35:278:12Full Moon26Thu
27Fri3:208.13:587.210:04-0.610:140.15:288:11Waning Gibbous27Fri
28Sat4:068.14:437.410:49-0.611:040.05:298:10Waning Gibbous28Sat
29Sun4:548.05:317.511:35-0.611:570.05:308:09Waning Gibbous29Sun
30Mon5:477.86:237.612:25-0.55:318:07Third Quarter30Mon
31Tue6:447.57:187.712:540.01:18-0.35:338:06Third Quarter31Tue
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 21% 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 (21% 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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