Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

61°
H 63°
L 47°
NE
10mph
High tide
11:06 am
Photo Credits

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

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 5:22 pm (1.4 ft)
Next high tide : in 15m at 11:06 am (6.0 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 - Jul 1934

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:588.35:417.611:43-0.95:078:26Waning Gibbous1Sun
2Mon5:568.06:387.612:040.012:37-0.65:088:26Third Quarter2Mon
3Tue6:577.57:347.61:060.11:33-0.25:088:26Third Quarter3Tue
4Wed7:597.18:317.52:090.22:280.25:098:26Third Quarter4Wed
5Thu9:026.79:287.43:120.33:260.65:098:26Third Quarter5Thu
6Fri10:066.410:257.44:170.44:250.95:108:25Waning Crescent6Fri
7Sat11:076.311:207.35:190.45:231.05:118:25Waning Crescent7Sat
8Sun12:036.26:150.36:161.15:118:25Waning Crescent8Sun
9Mon12:107.312:536.27:050.37:041.15:128:24Waning Crescent9Mon
10Tue12:577.31:396.37:510.27:481.15:138:24New Moon10Tue
11Wed1:417.42:216.38:330.28:291.15:148:23New Moon11Wed
12Thu2:217.43:016.49:110.29:081.05:148:23New Moon12Thu
13Fri2:597.33:376.59:460.29:451.05:158:22New Moon13Fri
14Sat3:367.34:126.510:200.210:221.05:168:22Waxing Crescent14Sat
15Sun4:127.24:476.610:530.311:011.05:178:21Waxing Crescent15Sun
16Mon4:487.05:226.711:270.411:411.05:188:20Waxing Crescent16Mon
17Tue5:276.85:596.712:030.55:198:20Waxing Crescent17Tue
18Wed6:096.66:386.912:240.912:420.65:198:19First Quarter18Wed
19Thu6:566.47:227.01:110.91:250.75:208:18First Quarter19Thu
20Fri7:476.38:107.12:010.82:120.85:218:17First Quarter20Fri
21Sat8:436.29:047.32:560.73:050.95:228:17Waxing Gibbous21Sat
22Sun9:456.110:037.53:560.54:030.95:238:16Waxing Gibbous22Sun
23Mon10:506.311:047.85:000.35:050.75:248:15Waxing Gibbous23Mon
24Tue11:516.56:01-0.16:060.45:258:14Waxing Gibbous24Tue
25Wed12:048.212:506.96:59-0.57:040.15:268:13Full Moon25Wed
26Thu1:018.51:467.27:54-0.88:01-0.25:278:12Full Moon26Thu
27Fri1:588.72:407.58:47-1.18:57-0.45:288:11Full Moon27Fri
28Sat2:538.73:327.89:38-1.19:53-0.55:298:10Waning Gibbous28Sat
29Sun3:478.64:247.910:29-1.110:48-0.55:308:09Waning Gibbous29Sun
30Mon4:418.35:157.911:19-0.811:45-0.45:318:08Waning Gibbous30Mon
31Tue5:377.86:087.812:10-0.45:328:07Third 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 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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