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

TIDE TIMES for Sunday, August 16, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 1h 43m at 10:59 am (-0.3 ft)
Next high tide : 4:52 pm (7.6 ft)
Sunset today : 7:44 pm
Sunrise tomorrow : 5:50 am
Moon phase : Waxing Crescent (18% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Mar 1954

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon9:476.910:316.13:471.14:380.46:205:32Waning Crescent1Mon
2Tue10:427.311:206.64:450.75:280.06:185:33Waning Crescent2Tue
3Wed11:327.75:380.26:14-0.56:165:34New Moon3Wed
4Thu12:057.212:218.06:27-0.46:58-0.86:155:35New Moon4Thu
5Fri12:507.71:108.27:17-0.87:43-1.16:135:37New Moon5Fri
6Sat1:358.11:588.38:06-1.28:29-1.16:115:38New Moon6Sat
7Sun2:218.42:488.28:55-1.39:15-1.06:105:39Waxing Crescent7Sun
8Mon3:078.53:387.99:46-1.310:03-0.76:085:40Waxing Crescent8Mon
9Tue3:578.34:337.410:40-1.010:56-0.36:065:42Waxing Crescent9Tue
10Wed4:518.05:337.011:38-0.611:530.26:045:43First Quarter10Wed
11Thu5:517.66:396.512:41-0.26:035:44First Quarter11Thu
12Fri6:577.37:486.312:560.61:500.16:015:45First Quarter12Fri
13Sat8:077.08:596.22:050.93:020.35:595:46Waxing Gibbous13Sat
14Sun9:186.910:046.33:181.04:110.35:575:48Waxing Gibbous14Sun
15Mon10:217.011:006.54:260.85:090.25:565:49Waxing Gibbous15Mon
16Tue11:167.111:476.75:240.65:580.15:545:50Waxing Gibbous16Tue
17Wed12:037.26:130.46:400.15:525:51Full Moon17Wed
18Thu12:296.912:467.26:560.27:180.15:505:52Full Moon18Thu
19Fri1:067.11:257.17:360.17:520.25:495:54Full Moon19Fri
20Sat1:417.22:027.08:120.08:240.35:475:55Full Moon20Sat
21Sun2:137.22:376.98:470.08:560.45:455:56Waning Gibbous21Sun
22Mon2:457.23:116.79:210.19:280.65:435:57Waning Gibbous22Mon
23Tue3:177.13:476.49:560.210:030.85:415:58Waning Gibbous23Tue
24Wed3:516.94:266.210:340.410:411.05:405:59Waning Gibbous24Wed
25Thu4:306.85:106.011:160.611:241.25:386:01Third Quarter25Thu
26Fri5:156.75:595.812:040.75:366:02Third Quarter26Fri
27Sat6:076.66:545.712:131.312:580.85:346:03Third Quarter27Sat
28Sun7:046.67:535.81:081.41:560.85:336:04Third Quarter28Sun
29Mon8:066.78:546.12:091.32:560.65:316:05Waning Crescent29Mon
30Tue9:096.99:526.53:131.03:560.35:296:06Waning Crescent30Tue
31Wed10:097.310:447.14:150.54:50-0.15:276:08Waning Crescent31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

Show All
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 1:55 pm — 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 18% 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 Waxing Crescent (18% 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