Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

48°
H 65°
L 44°
N
4mph
High tide
8:15 am
Photo Credits

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 2:25 pm (1.7 ft)
Next high tide : in 2h 45m at 8:15 am (5.7 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 - Nov 1938

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:466.17:596.41:451.02:061.46:174:36First Quarter1Tue
2Wed8:386.38:556.42:371.03:031.36:194:35Waxing Gibbous2Wed
3Thu9:286.69:486.53:280.93:571.06:204:34Waxing Gibbous3Thu
4Fri10:136.910:366.74:160.84:460.66:214:32Waxing Gibbous4Fri
5Sat10:547.211:216.94:590.65:300.26:224:31Waxing Gibbous5Sat
6Sun11:347.65:410.46:13-0.26:244:30Full Moon6Sun
7Mon12:047.112:147.96:220.26:56-0.56:254:29Full Moon7Mon
8Tue12:487.312:568.27:050.07:40-0.86:264:28Full Moon8Tue
9Wed1:337.41:418.37:50-0.18:27-0.96:284:27Waning Gibbous9Wed
10Thu2:207.42:288.48:37-0.19:15-0.96:294:25Waning Gibbous10Thu
11Fri3:097.43:198.39:27-0.110:06-0.86:304:24Waning Gibbous11Fri
12Sat4:017.34:138.110:200.111:02-0.66:314:23Waning Gibbous12Sat
13Sun5:007.25:147.811:200.26:334:22Third Quarter13Sun
14Mon6:027.16:207.512:01-0.412:240.46:344:21Third Quarter14Mon
15Tue7:057.17:277.31:03-0.21:310.46:354:20Third Quarter15Tue
16Wed8:097.28:357.12:060.02:400.36:374:19Waning Crescent16Wed
17Thu9:107.49:407.13:090.13:470.16:384:19Waning Crescent17Thu
18Fri10:077.610:397.14:100.14:48-0.16:394:18Waning Crescent18Fri
19Sat10:597.811:327.15:040.15:42-0.36:404:17Waning Crescent19Sat
20Sun11:467.95:540.26:31-0.56:424:16New Moon20Sun
21Mon12:217.112:317.96:390.27:16-0.56:434:15New Moon21Mon
22Tue1:077.11:137.87:220.37:59-0.46:444:15New Moon22Tue
23Wed1:507.01:537.78:030.58:39-0.36:454:14New Moon23Wed
24Thu2:316.82:337.58:430.69:18-0.16:464:13Waxing Crescent24Thu
25Fri3:116.73:127.39:230.89:580.16:484:13Waxing Crescent25Fri
26Sat3:526.53:537.110:041.010:380.36:494:12Waxing Crescent26Sat
27Sun4:356.44:376.810:471.111:210.56:504:12Waxing Crescent27Sun
28Mon5:206.35:246.611:351.26:514:11First Quarter28Mon
29Tue6:076.36:156.412:060.712:251.36:524:11First Quarter29Tue
30Wed6:556.37:086.312:520.81:181.36:534:10First Quarter30Wed
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 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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