Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

79°
H 79°
L 62°
SW
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 51m 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 - May 1942

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:528.52:267.98:33-1.18:48-0.75:377:43Full Moon1Fri
2Sat2:408.73:168.09:22-1.39:37-0.65:367:44Waning Gibbous2Sat
3Sun3:298.84:087.910:13-1.410:28-0.55:347:46Waning Gibbous3Sun
4Mon4:208.65:037.711:06-1.211:22-0.25:337:47Waning Gibbous4Mon
5Tue5:158.46:027.412:03-0.95:327:48Waning Gibbous5Tue
6Wed6:168.07:067.212:210.11:04-0.65:307:49Third Quarter6Wed
7Thu7:207.78:107.11:250.32:07-0.35:297:50Third Quarter7Thu
8Fri8:277.49:147.12:320.53:120.05:287:51Third Quarter8Fri
9Sat9:357.110:177.13:420.64:170.15:277:52Waning Crescent9Sat
10Sun10:397.111:147.34:490.55:170.25:267:53Waning Crescent10Sun
11Mon11:387.05:490.36:100.25:247:55Waning Crescent11Mon
12Tue12:047.412:307.06:420.16:570.35:237:56Waning Crescent12Tue
13Wed12:497.51:177.07:290.07:390.45:227:57New Moon13Wed
14Thu1:307.62:007.08:11-0.18:190.55:217:58New Moon14Thu
15Fri2:097.62:416.98:51-0.18:560.65:207:59New Moon15Fri
16Sat2:467.53:206.89:28-0.19:320.75:198:00New Moon16Sat
17Sun3:217.43:576.710:040.010:070.95:188:01Waxing Crescent17Sun
18Mon3:567.34:356.610:400.110:451.05:178:02Waxing Crescent18Mon
19Tue4:337.25:146.411:180.311:241.15:168:03Waxing Crescent19Tue
20Wed5:137.05:576.411:580.45:158:04Waxing Crescent20Wed
21Thu5:566.96:426.312:081.212:420.55:148:05First Quarter21Thu
22Fri6:446.77:296.412:551.31:280.65:138:06First Quarter22Fri
23Sat7:356.78:196.51:461.32:170.65:128:07First Quarter23Sat
24Sun8:296.79:106.72:411.23:080.65:128:08First Quarter24Sun
25Mon9:276.710:027.13:380.94:020.45:118:09Waxing Gibbous25Mon
26Tue10:266.910:547.54:360.54:560.25:108:10Waxing Gibbous26Tue
27Wed11:237.211:458.05:330.15:490.05:098:11Waxing Gibbous27Wed
28Thu12:187.46:27-0.56:41-0.35:098:12Full Moon28Thu
29Fri12:358.41:117.77:19-0.97:32-0.55:088:13Full Moon29Fri
30Sat1:268.72:057.88:12-1.28:24-0.65:088:13Full Moon30Sat
31Sun2:188.93:007.99:05-1.49:17-0.55:078:14Full Moon31Sun
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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