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

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 12:50 pm (-0.4 ft)
Next high tide : in 1h 31m at 6:04 am (7.8 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:04 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Dec 2034

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:207.35:367.611:410.26:554:10Third Quarter1Fri
2Sat6:217.16:397.212:20-0.312:460.56:564:09Third Quarter2Sat
3Sun7:227.07:436.91:210.01:510.66:574:09Third Quarter3Sun
4Mon8:217.08:466.72:210.32:570.66:584:09Waning Crescent4Mon
5Tue9:187.09:466.63:210.53:590.66:594:09Waning Crescent5Tue
6Wed10:107.110:406.64:160.64:540.47:004:08Waning Crescent6Wed
7Thu10:577.211:286.65:050.65:410.27:014:08Waning Crescent7Thu
8Fri11:397.35:490.76:240.17:024:08Waning Crescent8Fri
9Sat12:116.612:197.46:280.77:040.07:034:08New Moon9Sat
10Sun12:526.612:567.47:060.77:400.07:044:08New Moon10Sun
11Mon1:316.61:327.47:410.78:150.07:054:08New Moon11Mon
12Tue2:086.62:077.38:170.78:500.07:054:08New Moon12Tue
13Wed2:446.62:427.38:530.89:250.07:064:09Waxing Crescent13Wed
14Thu3:206.53:197.29:300.810:020.17:074:09Waxing Crescent14Thu
15Fri3:576.53:587.110:110.810:410.17:084:09Waxing Crescent15Fri
16Sat4:376.54:427.010:550.811:250.27:084:09Waxing Crescent16Sat
17Sun5:226.65:316.911:440.87:094:10First Quarter17Sun
18Mon6:116.76:266.812:130.212:380.77:104:10First Quarter18Mon
19Tue7:036.97:246.81:040.21:360.57:104:10First Quarter19Tue
20Wed7:587.28:276.81:580.22:370.37:114:11Waxing Gibbous20Wed
21Thu8:567.69:317.02:560.13:40-0.17:114:11Waxing Gibbous21Thu
22Fri9:547.910:327.23:56-0.14:41-0.67:124:12Waxing Gibbous22Fri
23Sat10:518.311:307.54:54-0.35:38-1.07:124:12Waxing Gibbous23Sat
24Sun11:458.75:50-0.56:33-1.37:134:13Full Moon24Sun
25Mon12:257.712:398.86:44-0.77:26-1.57:134:14Full Moon25Mon
26Tue1:207.81:338.97:38-0.78:19-1.57:134:14Full Moon26Tue
27Wed2:137.82:268.78:32-0.79:11-1.47:144:15Waning Gibbous27Wed
28Thu3:067.73:198.49:25-0.510:03-1.17:144:16Waning Gibbous28Thu
29Fri3:597.64:138.010:20-0.310:55-0.77:144:16Waning Gibbous29Fri
30Sat4:537.45:107.511:170.111:50-0.37:144:17Third Quarter30Sat
31Sun5:497.26:087.012:170.37:144:18Third Quarter31Sun
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 9:27 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 37% 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 (37% 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