Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

53°
H -°
L 51°
NNE
8mph
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 43m 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 - May 1935

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:128.112:457.66:53-0.77:08-0.35:387:43New Moon1Wed
2Thu1:028.31:387.67:46-1.07:57-0.25:367:44New Moon2Thu
3Fri1:508.42:297.58:36-1.18:46-0.15:357:45New Moon3Fri
4Sat2:388.43:197.49:25-1.09:330.15:337:46Waxing Crescent4Sat
5Sun3:258.24:077.110:13-0.810:200.45:327:48Waxing Crescent5Sun
6Mon4:117.94:566.811:01-0.411:080.75:317:49Waxing Crescent6Mon
7Tue4:597.65:466.611:50-0.111:581.05:307:50Waxing Crescent7Tue
8Wed5:507.26:396.312:420.35:287:51First Quarter8Wed
9Thu6:456.87:336.212:531.31:350.65:277:52First Quarter9Thu
10Fri7:416.58:276.21:491.42:270.95:267:53First Quarter10Fri
11Sat8:386.39:206.32:481.53:201.05:257:54First Quarter11Sat
12Sun9:356.210:116.43:471.44:121.15:247:55Waxing Gibbous12Sun
13Mon10:316.210:586.64:451.35:011.15:227:56Waxing Gibbous13Mon
14Tue11:236.211:406.95:371.05:451.05:217:58Waxing Gibbous14Tue
15Wed12:096.36:220.76:261.05:207:59Waxing Gibbous15Wed
16Thu12:207.112:536.47:030.47:050.95:198:00Full Moon16Thu
17Fri12:587.41:356.57:430.17:440.85:188:01Full Moon17Fri
18Sat1:367.52:166.68:22-0.18:240.75:178:02Full Moon18Sat
19Sun2:157.72:576.79:03-0.29:060.75:168:03Full Moon19Sun
20Mon2:577.83:406.79:46-0.39:500.65:158:04Waning Gibbous20Mon
21Tue3:407.94:256.810:31-0.410:370.65:148:05Waning Gibbous21Tue
22Wed4:277.95:146.811:18-0.411:280.65:148:06Waning Gibbous22Wed
23Thu5:197.86:086.912:10-0.35:138:07Waning Gibbous23Thu
24Fri6:167.67:057.012:250.61:05-0.25:128:08Third Quarter24Fri
25Sat7:177.48:037.11:260.62:01-0.15:118:09Third Quarter25Sat
26Sun8:217.29:027.42:290.52:590.05:108:10Third Quarter26Sun
27Mon9:267.110:017.63:350.33:590.15:108:11Waning Crescent27Mon
28Tue10:327.010:587.84:410.14:580.25:098:11Waning Crescent28Tue
29Wed11:347.011:518.05:43-0.25:540.25:088:12Waning Crescent29Wed
30Thu12:307.16:40-0.56:470.35:088:13New Moon30Thu
31Fri12:428.21:247.17:32-0.67:380.35:078:14New Moon31Fri
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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