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

TIDE TIMES for Friday, July 31, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 2h 27m at 9:48 pm (0.7 ft)
Next high tide (tomorrow) : 3:38 am (7.4 ft)
Sunset today : 8:06 pm
Sunrise tomorrow : 5:33 am
Moon phase : Waning Gibbous (96% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 1981

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:297.511:587.85:380.16:03-0.35:367:44Waning Crescent1Fri
2Sat12:247.86:33-0.56:54-0.65:357:45New Moon2Sat
3Sun12:478.31:178.07:25-1.07:44-0.85:347:46New Moon3Sun
4Mon1:378.72:118.18:18-1.38:34-0.85:327:47New Moon4Mon
5Tue2:278.93:048.19:10-1.59:25-0.75:317:49New Moon5Tue
6Wed3:178.93:588.010:02-1.510:17-0.55:307:50Waxing Crescent6Wed
7Thu4:098.74:537.710:56-1.311:11-0.25:297:51Waxing Crescent7Thu
8Fri5:048.45:517.411:52-1.05:277:52Waxing Crescent8Fri
9Sat6:038.06:537.112:080.212:52-0.55:267:53First Quarter9Sat
10Sun7:067.57:566.91:110.61:55-0.25:257:54First Quarter10Sun
11Mon8:107.28:596.82:170.82:580.25:247:55First Quarter11Mon
12Tue9:156.99:596.83:240.94:000.45:237:56First Quarter12Tue
13Wed10:196.810:556.94:300.94:590.55:217:57Waxing Gibbous13Wed
14Thu11:166.711:447.05:300.85:510.55:207:58Waxing Gibbous14Thu
15Fri12:076.76:210.66:360.65:198:00Waxing Gibbous15Fri
16Sat12:287.212:536.87:070.47:170.65:188:01Waxing Gibbous16Sat
17Sun1:077.31:356.87:480.27:540.75:178:02Full Moon17Sun
18Mon1:447.42:156.78:260.18:290.75:168:03Full Moon18Mon
19Tue2:197.42:536.79:020.19:040.85:158:04Full Moon19Tue
20Wed2:547.43:306.69:360.19:380.95:158:05Full Moon20Wed
21Thu3:287.34:066.510:110.110:141.05:148:06Waning Gibbous21Thu
22Fri4:027.34:446.410:480.210:521.15:138:07Waning Gibbous22Fri
23Sat4:407.25:246.411:270.211:341.15:128:08Waning Gibbous23Sat
24Sun5:217.16:086.412:100.35:118:09Waning Gibbous24Sun
25Mon6:087.16:566.412:211.212:570.35:118:10Third Quarter25Mon
26Tue7:017.07:486.61:131.11:480.35:108:10Third Quarter26Tue
27Wed7:577.08:426.82:091.02:410.35:098:11Third Quarter27Wed
28Thu8:577.09:387.23:080.83:370.25:098:12Waning Crescent28Thu
29Fri10:007.210:347.64:100.44:350.05:088:13Waning Crescent29Fri
30Sat11:027.411:288.15:120.05:31-0.25:078:14Waning Crescent30Sat
31Sun12:017.66:10-0.56:26-0.45:078:15Waning Crescent31Sun
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 12:43 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 spring phase. Tonight's moon is 96% 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 Waning Gibbous (96% 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