Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

80°
H 80°
L 62°
SSW
6mph
High tide
5:43 pm
Photo Credits

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 12:30 am (0.6 ft)
Next high tide : in 2h 08m at 5:43 pm (7.1 ft)
Sunset today : 6:52 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Apr 1942

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:427.62:037.88:10-0.58:31-0.66:267:09Full Moon1Wed
2Thu2:238.02:487.98:55-0.99:15-0.76:247:10Full Moon2Thu
3Fri3:058.33:347.99:41-1.19:59-0.76:227:11Waning Gibbous3Fri
4Sat3:508.44:237.810:29-1.110:47-0.66:207:12Waning Gibbous4Sat
5Sun4:388.35:157.611:20-1.011:38-0.36:197:13Waning Gibbous5Sun
6Mon5:308.16:137.312:16-0.86:177:14Third Quarter6Mon
7Tue6:297.87:167.012:340.01:16-0.56:157:16Third Quarter7Tue
8Wed7:337.68:236.81:360.32:21-0.26:147:17Third Quarter8Wed
9Thu8:427.39:326.82:430.53:300.06:127:18Third Quarter9Thu
10Fri9:527.210:386.93:550.64:390.06:107:19Waning Crescent10Fri
11Sat10:587.311:367.15:040.55:410.06:087:20Waning Crescent11Sat
12Sun11:577.46:050.26:35-0.16:077:21Waning Crescent12Sun
13Mon12:287.412:497.46:590.07:22-0.26:057:23New Moon13Mon
14Tue1:147.51:377.47:47-0.28:06-0.16:037:24New Moon14Tue
15Wed1:567.62:217.48:31-0.38:460.06:027:25New Moon15Wed
16Thu2:367.63:027.39:11-0.39:230.26:007:26New Moon16Thu
17Fri3:137.63:417.19:50-0.29:590.45:587:27Waxing Crescent17Fri
18Sat3:487.44:196.910:27-0.110:350.65:577:28Waxing Crescent18Sat
19Sun4:247.34:596.611:050.111:130.85:557:30Waxing Crescent19Sun
20Mon5:027.15:416.411:450.311:541.15:547:31Waxing Crescent20Mon
21Tue5:446.96:276.212:290.55:527:32Waxing Crescent21Tue
22Wed6:306.77:176.112:401.31:160.75:507:33First Quarter22Wed
23Thu7:216.58:096.01:301.42:070.85:497:34First Quarter23Thu
24Fri8:166.49:036.12:231.43:000.95:477:35First Quarter24Fri
25Sat9:146.59:576.33:201.43:550.85:467:36First Quarter25Sat
26Sun10:126.610:496.74:191.14:490.65:447:38Waxing Gibbous26Sun
27Mon11:076.911:367.25:150.75:400.35:437:39Waxing Gibbous27Mon
28Tue11:587.26:070.26:270.05:417:40Waxing Gibbous28Tue
29Wed12:217.712:477.56:56-0.37:13-0.35:407:41Full Moon29Wed
30Thu1:068.11:367.87:44-0.88:00-0.55:397:42Full Moon30Thu
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 transitional phase. Tonight's moon is 30% 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 shifting between spring and neap.

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 Crescent (30% illuminated). This places Squamscott River, Great Bay, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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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