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

TIDE TIMES for Sunday, August 2, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 1h 24m at 11:08 pm (0.5 ft)
Next high tide (tomorrow) : 4:54 am (7.2 ft)
Sunset today : 8:04 pm
Sunrise tomorrow : 5:35 am
Moon phase : Waning Gibbous (84% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 1977

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:047.46:13-0.26:32-0.35:367:44Waxing Gibbous1Sun
2Mon12:258.112:577.77:05-0.77:21-0.55:357:45Full Moon2Mon
3Tue1:148.51:497.97:56-1.28:11-0.75:347:46Full Moon3Tue
4Wed2:038.82:418.08:47-1.49:02-0.75:327:47Full Moon4Wed
5Thu2:548.93:348.09:39-1.59:53-0.65:317:49Waning Gibbous5Thu
6Fri3:468.84:287.810:32-1.410:47-0.45:307:50Waning Gibbous6Fri
7Sat4:408.65:257.611:27-1.111:44-0.15:297:51Waning Gibbous7Sat
8Sun5:388.26:267.412:26-0.85:277:52Third Quarter8Sun
9Mon6:417.87:297.212:460.21:27-0.45:267:53Third Quarter9Mon
10Tue7:467.48:327.11:510.42:30-0.15:257:54Third Quarter10Tue
11Wed8:517.19:337.12:580.63:320.25:247:55Third Quarter11Wed
12Thu9:566.910:327.14:060.64:340.35:237:56Waning Crescent12Thu
13Fri10:576.811:257.35:090.55:300.45:227:57Waning Crescent13Fri
14Sat11:526.86:050.36:190.55:207:58Waning Crescent14Sat
15Sun12:127.412:406.86:540.27:040.65:198:00Waning Crescent15Sun
16Mon12:557.41:256.87:370.17:440.65:188:01New Moon16Mon
17Tue1:347.52:066.88:180.08:210.75:178:02New Moon17Tue
18Wed2:127.52:466.78:550.08:570.85:168:03New Moon18Wed
19Thu2:487.43:236.79:310.09:330.85:158:04New Moon19Thu
20Fri3:237.44:006.610:060.110:080.95:158:05Waxing Crescent20Fri
21Sat3:587.34:376.510:420.210:461.05:148:06Waxing Crescent21Sat
22Sun4:357.25:166.511:190.211:271.15:138:07Waxing Crescent22Sun
23Mon5:147.15:576.412:000.35:128:08Waxing Crescent23Mon
24Tue5:587.06:426.512:111.112:430.45:118:09First Quarter24Tue
25Wed6:476.97:296.61:001.11:300.45:118:10First Quarter25Wed
26Thu7:396.88:196.81:521.02:200.45:108:10First Quarter26Thu
27Fri8:366.89:127.12:480.83:120.45:098:11First Quarter27Fri
28Sat9:356.910:077.53:470.64:080.25:098:12Waxing Gibbous28Sat
29Sun10:377.111:027.94:470.25:040.15:088:13Waxing Gibbous29Sun
30Mon11:367.311:558.45:46-0.36:00-0.25:078:14Waxing Gibbous30Mon
31Tue12:327.56:41-0.86:54-0.45:078:15Full Moon31Tue
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 2:01 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 84% 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 (84% 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