Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

55°
H -°
L 51°
SSE
3mph
Low tide
11:41 pm
Photo Credits

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

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 2h 08m at 11:41 pm (0.2 ft)
Next high tide (tomorrow) : 5:33 am (6.6 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 - Jan 1944

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:097.46:257.812:10-0.912:31-0.18:155:18First Quarter1Sat
2Sun7:087.47:297.41:07-0.61:350.18:155:19First Quarter2Sun
3Mon8:097.38:347.02:06-0.32:410.18:155:20First Quarter3Mon
4Tue9:107.39:416.83:070.03:490.18:155:21Waxing Gibbous4Tue
5Wed10:117.410:466.74:100.24:560.08:155:22Waxing Gibbous5Wed
6Thu11:087.511:456.75:100.45:56-0.18:155:23Waxing Gibbous6Thu
7Fri12:017.56:060.46:49-0.38:155:24Waxing Gibbous7Fri
8Sat12:386.712:497.66:560.47:37-0.38:145:25Full Moon8Sat
9Sun1:276.71:347.67:420.58:21-0.48:145:26Full Moon9Sun
10Mon2:116.72:157.58:240.59:02-0.38:145:27Full Moon10Mon
11Tue2:526.72:557.59:040.59:40-0.28:145:28Full Moon11Tue
12Wed3:316.63:327.49:420.610:16-0.18:135:29Waning Gibbous12Wed
13Thu4:076.64:097.210:190.710:510.08:135:30Waning Gibbous13Thu
14Fri4:446.54:477.010:580.811:270.28:135:31Waning Gibbous14Fri
15Sat5:226.45:276.811:380.98:125:33Waning Gibbous15Sat
16Sun6:026.46:106.512:060.412:221.08:125:34Third Quarter16Sun
17Mon6:446.46:576.312:470.51:091.08:115:35Third Quarter17Mon
18Tue7:296.47:486.11:300.72:001.08:115:36Third Quarter18Tue
19Wed8:176.58:446.02:180.82:540.98:105:37Third Quarter19Wed
20Thu9:096.79:446.03:090.93:520.78:095:39Waning Crescent20Thu
21Fri10:046.910:446.24:040.84:520.48:095:40Waning Crescent21Fri
22Sat10:597.311:416.55:020.75:490.08:085:41Waning Crescent22Sat
23Sun11:537.75:570.46:43-0.58:075:43Waning Crescent23Sun
24Mon12:356.812:458.16:500.07:34-0.98:075:44New Moon24Mon
25Tue1:277.11:388.57:43-0.38:25-1.38:065:45New Moon25Tue
26Wed2:187.52:308.78:35-0.69:15-1.58:055:46New Moon26Wed
27Thu3:097.73:228.79:28-0.810:06-1.58:045:48Waxing Crescent27Thu
28Fri4:007.84:158.610:21-0.810:56-1.48:035:49Waxing Crescent28Fri
29Sat4:517.95:098.211:16-0.711:48-1.18:025:50Waxing Crescent29Sat
30Sun5:467.86:077.812:14-0.58:015:52First Quarter30Sun
31Mon6:427.67:097.312:43-0.71:15-0.38:005:53First Quarter31Mon
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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