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

TIDE TIMES for Saturday, August 15, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 10:33 pm (-0.2 ft)
Next high tide : in 4h 34m at 4:07 pm (7.7 ft)
Sunset today : 7:46 pm
Sunrise tomorrow : 5:49 am
Moon phase : Waxing Crescent (11% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Nov 1955

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:127.61:228.67:30-0.38:08-1.16:174:37Full Moon1Tue
2Wed2:017.62:118.68:19-0.38:58-1.16:184:35Waning Gibbous2Wed
3Thu2:527.53:028.59:10-0.29:51-1.06:204:34Waning Gibbous3Thu
4Fri3:467.43:588.310:040.010:48-0.76:214:33Waning Gibbous4Fri
5Sat4:457.24:597.911:030.211:49-0.46:224:31Third Quarter5Sat
6Sun5:487.06:057.612:080.46:244:30Third Quarter6Sun
7Mon6:547.07:137.312:52-0.11:160.66:254:29Third Quarter7Mon
8Tue7:587.08:217.11:560.12:260.66:264:28Third Quarter8Tue
9Wed8:597.19:267.03:000.23:340.46:274:27Waning Crescent9Wed
10Thu9:567.310:257.04:000.34:350.26:294:26Waning Crescent10Thu
11Fri10:477.511:187.04:540.35:280.06:304:24Waning Crescent11Fri
12Sat11:337.65:410.46:16-0.26:314:23New Moon12Sat
13Sun12:066.912:157.66:250.57:00-0.26:334:22New Moon13Sun
14Mon12:506.912:557.67:050.67:40-0.26:344:21New Moon14Mon
15Tue1:316.81:337.57:440.78:19-0.16:354:20New Moon15Tue
16Wed2:116.72:107.48:210.88:560.06:364:19Waxing Crescent16Wed
17Thu2:496.52:477.38:580.99:330.26:384:19Waxing Crescent17Thu
18Fri3:276.43:257.19:361.110:120.46:394:18Waxing Crescent18Fri
19Sat4:076.34:066.910:171.210:530.56:404:17Waxing Crescent19Sat
20Sun4:506.24:516.711:011.311:370.76:414:16First Quarter20Sun
21Mon5:366.15:406.611:501.46:434:15First Quarter21Mon
22Tue6:246.26:316.512:230.712:421.36:444:15First Quarter22Tue
23Wed7:126.37:266.41:110.81:361.26:454:14First Quarter23Wed
24Thu8:016.68:226.42:000.82:321.06:464:13Waxing Gibbous24Thu
25Fri8:526.99:206.62:520.73:290.66:474:13Waxing Gibbous25Fri
26Sat9:427.410:156.83:440.54:250.16:494:12Waxing Gibbous26Sat
27Sun10:317.811:087.14:360.35:17-0.46:504:12Waxing Gibbous27Sun
28Mon11:208.211:597.35:270.06:08-0.86:514:11Full Moon28Mon
29Tue12:108.66:17-0.26:59-1.16:524:11Full Moon29Tue
30Wed12:517.51:028.87:08-0.47:51-1.36:534:10Full Moon30Wed
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 7:20 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 11% 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 (11% 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