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

TIDE TIMES for Saturday, July 11, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 5:09 pm (0.5 ft)
Next high tide : in 2h 27m at 10:53 am (6.5 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:14 am
Moon phase : Waning Crescent (11% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jan 2004

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:416.79:136.02:410.93:270.87:154:19Waxing Gibbous1Thu
2Fri9:336.710:106.03:361.14:240.77:154:19Waxing Gibbous2Fri
3Sat10:226.811:006.04:281.15:140.57:154:20Waxing Gibbous3Sat
4Sun11:076.911:466.15:151.15:590.37:154:21Waxing Gibbous4Sun
5Mon11:497.15:581.16:400.27:154:22Full Moon5Mon
6Tue12:296.212:297.26:371.07:190.17:154:23Full Moon6Tue
7Wed1:096.21:077.37:150.97:560.07:144:24Full Moon7Wed
8Thu1:476.31:447.37:520.98:310.07:144:25Full Moon8Thu
9Fri2:236.32:217.48:290.89:06-0.17:144:26Waning Gibbous9Fri
10Sat2:596.42:577.49:070.79:42-0.17:144:27Waning Gibbous10Sat
11Sun3:356.53:367.39:470.710:20-0.17:134:28Waning Gibbous11Sun
12Mon4:136.64:197.210:310.611:01-0.17:134:30Waning Gibbous12Mon
13Tue4:556.75:067.011:190.511:460.07:134:31Third Quarter13Tue
14Wed5:416.96:006.812:120.57:124:32Third Quarter14Wed
15Thu6:327.06:586.612:350.21:100.47:124:33Third Quarter15Thu
16Fri7:267.28:026.41:280.32:120.27:114:34Third Quarter16Fri
17Sat8:267.49:106.42:270.43:180.07:114:35Waning Crescent17Sat
18Sun9:297.610:176.53:300.44:24-0.37:104:37Waning Crescent18Sun
19Mon10:317.911:196.74:330.35:26-0.67:104:38Waning Crescent19Mon
20Tue11:308.15:330.16:23-0.97:094:39New Moon20Tue
21Wed12:166.912:268.36:300.07:18-1.07:084:40New Moon21Wed
22Thu1:117.11:218.47:25-0.28:10-1.17:084:42New Moon22Thu
23Fri2:037.22:138.38:18-0.28:59-1.07:074:43Waxing Crescent23Fri
24Sat2:527.33:038.19:10-0.29:47-0.87:064:44Waxing Crescent24Sat
25Sun3:407.23:537.710:000.010:33-0.57:054:46Waxing Crescent25Sun
26Mon4:287.14:437.210:520.211:200.07:044:47Waxing Crescent26Mon
27Tue5:176.95:366.711:460.47:044:48First Quarter27Tue
28Wed6:066.86:316.312:080.412:420.77:034:49First Quarter28Wed
29Thu6:576.67:285.912:570.81:390.87:024:51First Quarter29Thu
30Fri7:496.58:295.71:491.22:390.97:014:52First Quarter30Fri
31Sat8:456.49:305.62:451.43:410.97:004:53Waxing Gibbous31Sat
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 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 Waning 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