Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

65°
H 66°
L 44°
ESE
3mph
Low tide
2:25 pm
Photo Credits

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 1h 19m at 2:25 pm (1.7 ft)
Next high tide : 8:24 pm (6.4 ft)
Sunset today : 6:46 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Feb 1938

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:446.71:497.47:570.38:25-0.26:594:55New Moon1Tue
2Wed2:176.92:247.48:340.28:58-0.36:584:56Waxing Crescent2Wed
3Thu2:507.03:007.39:110.19:33-0.36:574:58Waxing Crescent3Thu
4Fri3:257.13:397.29:510.010:11-0.26:554:59Waxing Crescent4Fri
5Sat4:027.24:227.010:350.010:53-0.16:545:00Waxing Crescent5Sat
6Sun4:457.35:106.811:230.011:410.16:535:02First Quarter6Sun
7Mon5:347.36:066.612:170.16:525:03First Quarter7Mon
8Tue6:297.37:086.412:330.31:170.16:515:04First Quarter8Tue
9Wed7:317.38:166.31:320.42:220.16:495:06First Quarter9Wed
10Thu8:387.49:276.52:370.43:32-0.16:485:07Waxing Gibbous10Thu
11Fri9:477.610:336.83:460.34:39-0.46:475:08Waxing Gibbous11Fri
12Sat10:507.911:317.14:520.05:38-0.76:455:10Waxing Gibbous12Sat
13Sun11:488.25:51-0.36:33-1.06:445:11Full Moon13Sun
14Mon12:257.512:428.46:47-0.67:23-1.26:435:12Full Moon14Mon
15Tue1:167.81:348.47:40-0.88:11-1.26:415:14Full Moon15Tue
16Wed2:047.92:238.28:30-0.98:57-1.06:405:15Waning Gibbous16Wed
17Thu2:497.93:107.99:18-0.89:41-0.76:385:16Waning Gibbous17Thu
18Fri3:347.83:587.510:06-0.510:26-0.36:375:18Waning Gibbous18Fri
19Sat4:197.54:477.010:55-0.211:120.26:365:19Waning Gibbous19Sat
20Sun5:077.25:396.511:470.26:345:20Third Quarter20Sun
21Mon5:576.96:346.112:010.612:410.56:325:21Third Quarter21Mon
22Tue6:516.67:325.812:531.01:390.86:315:23Third Quarter22Tue
23Wed7:496.48:345.71:491.32:410.96:295:24Third Quarter23Wed
24Thu8:496.49:345.72:501.43:440.96:285:25Waning Crescent24Thu
25Fri9:476.510:285.93:511.34:400.86:265:27Waning Crescent25Fri
26Sat10:396.711:156.24:461.15:260.56:255:28Waning Crescent26Sat
27Sun11:256.911:566.55:330.96:070.36:235:29Waning Crescent27Sun
28Mon12:067.16:140.66:430.16:215:30New Moon28Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
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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 neap phase. Tonight's moon is 58% 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 minimum.

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 First Quarter (58% illuminated). This places Squamscott River, Great Bay, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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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