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

TIDE TIMES for Monday, August 10, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 5:59 pm (0.4 ft)
Next high tide : in 18m at 11:45 am (6.6 ft)
Sunset today : 7:53 pm
Sunrise tomorrow : 5:44 am
Moon phase : Waning Crescent (6% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jun 1963

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:016.510:356.84:151.14:380.85:078:15Waxing Gibbous1Sat
2Sun10:576.411:226.95:131.05:280.85:068:16Waxing Gibbous2Sun
3Mon11:486.46:040.86:130.95:068:17Waxing Gibbous3Mon
4Tue12:067.112:346.56:490.66:530.95:058:17Waxing Gibbous4Tue
5Wed12:457.21:176.57:300.47:310.95:058:18Full Moon5Wed
6Thu1:237.31:596.58:080.28:080.95:048:19Full Moon6Thu
7Fri2:007.42:386.58:450.18:440.95:048:19Full Moon7Fri
8Sat2:367.43:166.59:210.19:211.05:048:20Full Moon8Sat
9Sun3:127.53:536.59:580.010:001.05:048:21Waning Gibbous9Sun
10Mon3:497.54:326.510:360.010:411.05:038:21Waning Gibbous10Mon
11Tue4:297.45:136.611:170.011:250.95:038:22Waning Gibbous11Tue
12Wed5:137.45:596.612:020.05:038:22Waning Gibbous12Wed
13Thu6:027.36:496.812:140.912:500.05:038:23Third Quarter13Thu
14Fri6:567.37:417.01:080.81:410.05:038:23Third Quarter14Fri
15Sat7:547.28:367.22:060.72:350.05:038:24Third Quarter15Sat
16Sun8:567.19:337.53:070.53:310.05:038:24Waning Crescent16Sun
17Mon10:007.210:307.94:100.24:300.05:038:25Waning Crescent17Mon
18Tue11:047.211:278.25:13-0.25:29-0.15:038:25Waning Crescent18Tue
19Wed12:047.46:13-0.66:25-0.25:038:25Waning Crescent19Wed
20Thu12:218.51:017.57:09-0.97:19-0.25:038:26New Moon20Thu
21Fri1:148.71:577.58:04-1.18:13-0.25:048:26New Moon21Fri
22Sat2:088.72:527.58:57-1.19:06-0.15:048:26New Moon22Sat
23Sun3:008.63:447.49:49-1.09:580.15:048:26Waxing Crescent23Sun
24Mon3:528.44:367.310:40-0.810:510.35:048:26Waxing Crescent24Mon
25Tue4:438.05:287.111:31-0.511:440.55:058:27Waxing Crescent25Tue
26Wed5:367.66:216.912:23-0.25:058:27Waxing Crescent26Wed
27Thu6:307.27:146.812:400.81:140.25:058:27First Quarter27Thu
28Fri7:256.98:056.81:361.02:050.55:068:27First Quarter28Fri
29Sat8:216.58:566.72:341.12:550.85:068:27First Quarter29Sat
30Sun9:176.39:476.83:321.13:471.05:078:27First Quarter30Sun
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 2:52 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 6% 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 (6% 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