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

TIDE TIMES for Monday, July 6, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : in 4h 05m at 1:08 am (0.8 ft)
Next high tide (tomorrow) : 6:53 am (6.8 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:11 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Dec 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:497.95:560.46:38-0.56:554:10Full Moon1Tue
2Wed12:306.912:358.26:420.27:25-0.86:564:09Full Moon2Wed
3Thu1:187.01:238.37:300.18:14-0.96:574:09Full Moon3Thu
4Fri2:077.12:138.48:200.09:04-0.96:584:09Waning Gibbous4Fri
5Sat2:577.13:068.39:120.09:55-0.96:594:09Waning Gibbous5Sat
6Sun3:517.14:018.110:070.110:50-0.77:004:08Waning Gibbous6Sun
7Mon4:477.15:017.811:070.211:47-0.47:014:08Third Quarter7Mon
8Tue5:477.16:057.412:110.37:024:08Third Quarter8Tue
9Wed6:487.27:117.112:46-0.21:170.47:034:08Third Quarter9Wed
10Thu7:497.38:186.81:460.12:250.37:044:08Third Quarter10Thu
11Fri8:497.49:246.72:470.33:330.27:054:08Waning Crescent11Fri
12Sat9:467.510:256.63:480.54:350.07:064:09Waning Crescent12Sat
13Sun10:407.611:206.64:440.65:30-0.27:064:09Waning Crescent13Sun
14Mon11:297.65:360.66:20-0.37:074:09New Moon14Mon
15Tue12:106.612:157.66:230.67:05-0.37:084:09New Moon15Tue
16Wed12:566.612:587.67:070.77:48-0.37:094:09New Moon16Wed
17Thu1:396.61:397.57:480.78:28-0.27:094:10New Moon17Thu
18Fri2:196.52:187.48:280.89:060.07:104:10Waxing Crescent18Fri
19Sat2:586.42:577.39:070.99:430.17:104:10Waxing Crescent19Sat
20Sun3:366.43:357.19:460.910:190.27:114:11Waxing Crescent20Sun
21Mon4:146.34:156.810:271.010:580.47:114:11Waxing Crescent21Mon
22Tue4:546.34:586.611:111.111:380.67:124:12First Quarter22Tue
23Wed5:366.35:456.411:581.27:124:12First Quarter23Wed
24Thu6:206.46:356.112:200.712:481.17:134:13First Quarter24Thu
25Fri7:056.57:286.01:040.91:401.17:134:14First Quarter25Fri
26Sat7:536.68:255.91:521.02:360.97:134:14Waxing Gibbous26Sat
27Sun8:446.99:246.02:441.03:340.67:144:15Waxing Gibbous27Sun
28Mon9:387.210:216.23:390.94:300.27:144:16Waxing Gibbous28Mon
29Tue10:317.611:156.54:340.75:24-0.27:144:17Waxing Gibbous29Tue
30Wed11:237.95:270.46:16-0.67:144:17Full Moon30Wed
31Thu12:076.812:158.36:200.17:07-0.97:154:18Full Moon31Thu
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 4:00 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 transitional phase. Tonight's moon is 62% 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 shifting between spring and neap.

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 Third Quarter (62% illuminated). This places Squamscott River, Great Bay, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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