Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

54°
H -°
L 46°
NNW
3mph
Low tide
10:55 pm
Photo Credits

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

TIDE TIMES for Monday, September 14, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 14m at 10:55 pm (-0.1 ft)
Next high tide (tomorrow) : 4:47 am (7.0 ft)
Sunset today : 6:55 pm
Sunrise tomorrow : 6:22 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Apr 1946

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:117.412:297.96:37-0.37:02-0.65:266:09New Moon1Mon
2Tue12:547.81:168.17:24-0.87:46-0.85:246:10New Moon2Tue
3Wed1:378.22:048.18:11-1.18:30-0.85:226:11New Moon3Wed
4Thu2:218.42:528.09:00-1.29:17-0.75:206:12Waxing Crescent4Thu
5Fri3:088.53:437.79:50-1.210:06-0.45:196:13Waxing Crescent5Fri
6Sat3:578.34:397.410:43-1.010:590.05:176:14Waxing Crescent6Sat
7Sun4:528.05:407.011:42-0.611:580.45:156:16First Quarter7Sun
8Mon5:547.66:476.712:46-0.35:136:17First Quarter8Mon
9Tue7:017.37:566.51:030.71:540.05:126:18First Quarter9Tue
10Wed8:127.19:056.52:140.93:060.25:106:19Waxing Gibbous10Wed
11Thu9:237.010:086.63:270.94:120.25:086:20Waxing Gibbous11Thu
12Fri10:267.111:036.94:340.75:100.15:076:21Waxing Gibbous12Fri
13Sat11:217.211:507.15:300.55:590.15:056:23Waxing Gibbous13Sat
14Sun12:097.26:190.26:420.15:036:24Full Moon14Sun
15Mon12:327.312:537.27:030.17:210.25:026:25Full Moon15Mon
16Tue1:107.41:337.17:440.07:560.35:006:26Full Moon16Tue
17Wed1:457.42:117.08:21-0.18:300.54:586:27Full Moon17Wed
18Thu2:187.32:486.88:570.09:030.74:576:28Waning Gibbous18Thu
19Fri2:517.33:256.69:320.19:380.94:556:30Waning Gibbous19Fri
20Sat3:257.14:036.410:090.310:141.14:546:31Waning Gibbous20Sat
21Sun4:026.94:456.110:480.510:551.34:526:32Waning Gibbous21Sun
22Mon4:436.85:316.011:330.611:411.54:506:33Third Quarter22Mon
23Tue5:316.66:225.812:220.84:496:34Third Quarter23Tue
24Wed6:246.57:165.812:321.61:140.94:476:35Third Quarter24Wed
25Thu7:216.58:136.01:281.62:100.84:466:36Third Quarter25Thu
26Fri8:216.69:096.32:271.43:080.74:446:38Waning Crescent26Fri
27Sat9:216.910:016.83:281.14:030.44:436:39Waning Crescent27Sat
28Sun11:187.211:497.35:260.65:540.05:417:40Waning Crescent28Sun
29Mon12:107.56:200.06:42-0.35:407:41Waning Crescent29Mon
30Tue12:357.91:027.87:10-0.67:29-0.55:397:42New Moon30Tue
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 spring phase. Tonight's moon is 14% 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 maximum.

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 (14% illuminated). This places Squamscott River, Great Bay, NH in a spring tide cycle, so tidal ranges are near their weekly maximum 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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