Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

52°
H -°
L 50°
NNE
7mph
Low tide
5:16 am
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 3h 08m at 5:16 am (1.0 ft)
Next high tide : 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 - Apr 1935

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:057.811:367.85:12-0.25:42-0.65:266:08Waning Crescent1Mon
2Tue12:018.06:08-0.86:32-0.85:246:09New Moon2Tue
3Wed12:258.312:548.17:01-1.17:21-0.85:236:11New Moon3Wed
4Thu1:138.51:458.07:52-1.38:08-0.75:216:12New Moon4Thu
5Fri2:008.62:357.88:42-1.38:55-0.55:196:13Waxing Crescent5Fri
6Sat2:478.43:257.59:31-1.19:43-0.15:176:14Waxing Crescent6Sat
7Sun3:358.14:167.110:22-0.710:320.35:166:15Waxing Crescent7Sun
8Mon4:257.75:116.611:15-0.211:260.85:146:16Waxing Crescent8Mon
9Tue5:207.26:096.312:120.25:126:18First Quarter9Tue
10Wed6:196.87:096.012:241.11:120.65:116:19First Quarter10Wed
11Thu7:216.58:105.91:251.42:130.85:096:20First Quarter11Thu
12Fri8:246.49:096.02:301.53:140.95:076:21First Quarter12Fri
13Sat9:246.410:026.23:341.44:100.95:066:22Waxing Gibbous13Sat
14Sun10:186.410:476.54:311.24:570.85:046:23Waxing Gibbous14Sun
15Mon11:056.611:276.85:190.95:370.75:026:25Waxing Gibbous15Mon
16Tue11:486.76:010.66:140.65:016:26Waxing Gibbous16Tue
17Wed12:047.012:286.76:390.36:480.64:596:27Full Moon17Wed
18Thu12:387.21:066.87:150.17:210.64:576:28Full Moon18Thu
19Fri1:127.41:436.87:510.07:560.64:566:29Full Moon19Fri
20Sat1:457.52:206.78:27-0.18:320.64:546:30Full Moon20Sat
21Sun2:217.52:586.79:05-0.29:110.64:526:31Waning Gibbous21Sun
22Mon2:597.63:396.69:46-0.29:530.74:516:33Waning Gibbous22Mon
23Tue3:427.54:256.510:32-0.110:410.84:496:34Waning Gibbous23Tue
24Wed4:307.45:186.411:230.011:350.84:486:35Third Quarter24Wed
25Thu5:277.36:176.412:200.14:466:36Third Quarter25Thu
26Fri6:297.27:196.612:350.91:190.14:456:37Third Quarter26Fri
27Sat7:347.28:226.81:400.82:210.14:436:38Third Quarter27Sat
28Sun9:427.210:247.23:480.64:230.05:427:40Waning Crescent28Sun
29Mon10:487.311:207.74:560.25:23-0.15:407:41Waning Crescent29Mon
30Tue11:497.55:57-0.36:17-0.25:397:42Waning Crescent30Tue
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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