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

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : in 4h 42m at 3:44 am (0.8 ft)
Next high tide (tomorrow) : 9:32 am (6.0 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 5:24 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Dec 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:196.62:187.58:270.79:03-0.16:554:10Waning Gibbous1Wed
2Thu2:576.62:577.59:080.79:44-0.26:564:09Waning Gibbous2Thu
3Fri3:376.63:407.59:510.610:27-0.16:574:09Waning Gibbous3Fri
4Sat4:226.74:287.410:400.611:15-0.16:584:09Waning Gibbous4Sat
5Sun5:116.85:227.211:330.66:594:09Third Quarter5Sun
6Mon6:047.06:217.112:060.012:320.57:004:08Third Quarter6Mon
7Tue7:007.27:247.01:000.01:330.47:014:08Third Quarter7Tue
8Wed7:587.48:296.91:570.12:380.17:024:08Waning Crescent8Wed
9Thu8:587.79:357.02:570.13:43-0.27:034:08Waning Crescent9Thu
10Fri9:578.010:377.13:580.04:45-0.57:044:08Waning Crescent10Fri
11Sat10:538.311:357.34:57-0.15:42-0.97:054:08New Moon11Sat
12Sun11:478.55:52-0.26:36-1.17:054:09New Moon12Sun
13Mon12:297.412:408.56:45-0.27:28-1.17:064:09New Moon13Mon
14Tue1:227.41:318.57:37-0.28:19-1.17:074:09New Moon14Tue
15Wed2:127.42:208.38:27-0.19:07-0.97:084:09Waxing Crescent15Wed
16Thu3:017.23:098.09:170.19:54-0.67:084:09Waxing Crescent16Thu
17Fri3:497.13:587.610:060.310:42-0.27:094:10Waxing Crescent17Fri
18Sat4:386.94:487.210:580.611:300.17:104:10Waxing Crescent18Sat
19Sun5:286.75:416.711:510.87:104:10First Quarter19Sun
20Mon6:186.66:356.412:180.512:471.07:114:11First Quarter20Mon
21Tue7:096.57:316.11:080.81:441.17:114:11First Quarter21Tue
22Wed8:006.58:295.91:581.02:421.17:124:12First Quarter22Wed
23Thu8:536.69:275.92:511.23:411.07:124:12Waxing Gibbous23Thu
24Fri9:446.710:215.93:451.24:340.87:134:13Waxing Gibbous24Fri
25Sat10:316.911:096.14:351.25:220.57:134:14Waxing Gibbous25Sat
26Sun11:157.111:546.25:201.16:040.37:134:14Waxing Gibbous26Sun
27Mon11:577.36:020.96:440.17:144:15Full Moon27Mon
28Tue12:366.412:377.56:430.77:23-0.27:144:16Full Moon28Tue
29Wed1:166.61:177.77:230.58:02-0.47:144:16Full Moon29Wed
30Thu1:556.71:587.88:050.38:42-0.57:144:17Full Moon30Thu
31Fri2:356.92:397.88:480.29:22-0.67:154:18Waning Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

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What time does the tide turn (slack tide) in Squamscott River, Great Bay, NH today?

Slack tide in Squamscott River, Great Bay, NH is approximately 6:38 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 62% 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 First Quarter (62% 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