Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

69°
H 68°
L 53°
SE
5mph
High tide
4:58 pm
Photo Credits

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

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 11:41 pm (0.2 ft)
Next high tide : in 3h 12m at 4:58 pm (7.3 ft)
Sunset today : 6:54 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Oct 1944

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:338.31:058.07:12-0.87:33-0.86:416:25Full Moon1Sun
2Mon1:278.51:558.48:02-1.18:27-1.16:426:23Full Moon2Mon
3Tue2:218.62:458.68:52-1.19:19-1.36:436:21Full Moon3Tue
4Wed3:148.43:348.69:41-0.910:12-1.26:446:20Waning Gibbous4Wed
5Thu4:068.24:258.510:31-0.611:05-1.06:456:18Waning Gibbous5Thu
6Fri5:017.85:178.111:23-0.26:466:16Waning Gibbous6Fri
7Sat5:587.36:147.712:02-0.612:190.36:476:14Third Quarter7Sat
8Sun7:006.97:157.41:02-0.21:190.76:496:13Third Quarter8Sun
9Mon8:026.68:187.12:040.22:221.06:506:11Third Quarter9Mon
10Tue9:066.49:226.93:090.43:271.26:516:09Third Quarter10Tue
11Wed10:076.410:236.84:130.64:311.16:526:08Waning Crescent11Wed
12Thu11:026.511:186.95:110.65:291.06:536:06Waning Crescent12Thu
13Fri11:516.76:020.56:180.86:546:04Waning Crescent13Fri
14Sat12:067.012:336.96:450.47:020.66:566:03Waning Crescent14Sat
15Sun12:497.11:117.07:230.47:410.46:576:01New Moon15Sun
16Mon1:297.11:477.27:580.48:170.36:585:59New Moon16Mon
17Tue2:077.12:207.38:300.48:520.26:595:58New Moon17Tue
18Wed2:437.02:527.39:020.59:260.17:015:56New Moon18Wed
19Thu3:186.93:247.39:350.510:010.17:025:55Waxing Crescent19Thu
20Fri3:536.83:587.310:100.710:380.27:035:53Waxing Crescent20Fri
21Sat4:306.74:357.310:470.811:190.27:045:51Waxing Crescent21Sat
22Sun5:116.55:177.211:300.97:055:50Waxing Crescent22Sun
23Mon5:596.46:077.112:050.312:181.07:075:48First Quarter23Mon
24Tue6:536.37:047.112:580.41:121.07:085:47First Quarter24Tue
25Wed7:526.48:067.11:550.42:121.07:095:45First Quarter25Wed
26Thu8:556.69:117.32:550.33:170.87:105:44First Quarter26Thu
27Fri9:586.910:187.53:580.14:230.57:125:43Waxing Gibbous27Fri
28Sat10:577.411:207.85:00-0.15:260.07:135:41Waxing Gibbous28Sat
29Sun11:527.95:56-0.56:24-0.57:145:40Waxing Gibbous29Sun
30Mon12:178.012:438.36:49-0.77:19-1.07:155:38Full Moon30Mon
31Tue1:118.21:338.67:39-0.88:11-1.27:175:37Full Moon31Tue
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 21% 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 (21% 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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