Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

53°
H -°
L 50°
SSW
2mph
High tide
5:33 am
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 : 11:50 am (0.9 ft)
Next high tide : in 4h 54m at 5:33 am (6.6 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 - Oct 1943

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:057.33:197.49:290.29:500.06:406:26Waxing Crescent1Fri
2Sat3:417.23:547.510:050.210:30-0.16:416:25Waxing Crescent2Sat
3Sun4:207.14:327.510:440.311:13-0.16:426:23Waxing Crescent3Sun
4Mon5:037.05:167.511:270.46:436:21Waxing Crescent4Mon
5Tue5:526.86:077.512:010.012:160.56:446:19First Quarter5Tue
6Wed6:496.77:047.412:550.11:110.66:456:18First Quarter6Wed
7Thu7:506.68:087.41:540.12:120.76:476:16First Quarter7Thu
8Fri8:566.79:157.52:570.13:170.66:486:14Waxing Gibbous8Fri
9Sat10:036.910:237.64:040.04:260.46:496:12Waxing Gibbous9Sat
10Sun11:057.311:267.95:08-0.25:310.06:506:11Waxing Gibbous10Sun
11Mon12:017.76:07-0.56:30-0.46:516:09Waxing Gibbous11Mon
12Tue12:238.112:538.07:00-0.77:24-0.76:526:07Full Moon12Tue
13Wed1:178.21:428.27:49-0.78:16-0.96:546:06Full Moon13Wed
14Thu2:098.22:308.38:37-0.79:06-1.06:556:04Full Moon14Thu
15Fri2:598.03:168.39:24-0.59:54-0.86:566:02Waning Gibbous15Fri
16Sat3:487.74:028.110:10-0.210:42-0.66:576:01Waning Gibbous16Sat
17Sun4:367.44:487.710:560.211:31-0.26:585:59Waning Gibbous17Sun
18Mon5:267.05:367.411:440.67:005:57Waning Gibbous18Mon
19Tue6:196.66:297.012:230.112:361.07:015:56Third Quarter19Tue
20Wed7:156.37:266.71:180.51:321.37:025:54Third Quarter20Wed
21Thu8:126.28:246.52:140.82:301.47:035:53Third Quarter21Thu
22Fri9:106.19:236.53:120.93:301.57:045:51Third Quarter22Fri
23Sat10:056.210:206.54:100.94:291.37:065:50Waning Crescent23Sat
24Sun10:566.411:126.75:030.95:231.17:075:48Waning Crescent24Sun
25Mon11:416.711:586.85:490.76:090.87:085:47Waning Crescent25Mon
26Tue12:217.06:300.56:500.57:095:45Waning Crescent26Tue
27Wed12:407.012:587.27:060.47:290.27:115:44New Moon27Wed
28Thu1:197.11:347.57:420.38:06-0.17:125:42New Moon28Thu
29Fri1:587.22:097.78:180.28:45-0.37:135:41New Moon29Fri
30Sat2:377.32:467.88:560.19:25-0.47:145:39New Moon30Sat
31Sun3:177.23:257.99:360.110:07-0.57:165:38Waxing Crescent31Sun
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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