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 : 10:14 am (-0.6 ft)
Next high tide : in 1m at 3:36 am (8.1 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 - Jun 1956

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:136.57:536.51:261.31:500.75:068:16Third Quarter1Fri
2Sat8:046.48:406.62:171.32:370.85:068:16Third Quarter2Sat
3Sun8:586.39:286.93:101.13:260.85:058:17Third Quarter3Sun
4Mon9:546.410:187.24:060.94:170.85:058:18Waning Crescent4Mon
5Tue10:506.511:087.55:020.55:100.65:058:19Waning Crescent5Tue
6Wed11:456.711:577.95:550.16:020.45:048:19Waning Crescent6Wed
7Thu12:376.96:46-0.36:520.25:048:20New Moon7Thu
8Fri12:478.31:297.27:37-0.77:440.05:048:21New Moon8Fri
9Sat1:388.62:227.48:29-1.08:36-0.25:048:21New Moon9Sat
10Sun2:318.73:157.59:20-1.29:30-0.35:038:22Waxing Crescent10Sun
11Mon3:248.74:087.610:13-1.210:25-0.25:038:22Waxing Crescent11Mon
12Tue4:198.65:037.711:06-1.111:22-0.25:038:23Waxing Crescent12Tue
13Wed5:168.36:007.712:01-0.95:038:23Waxing Crescent13Wed
14Thu6:168.06:597.612:220.012:57-0.65:038:24First Quarter14Thu
15Fri7:187.67:587.61:260.11:55-0.35:038:24First Quarter15Fri
16Sat8:217.28:567.62:300.22:530.15:038:25First Quarter16Sat
17Sun9:256.99:547.53:350.33:530.45:038:25Waxing Gibbous17Sun
18Mon10:296.710:517.54:400.34:520.65:038:25Waxing Gibbous18Mon
19Tue11:286.611:437.55:400.25:480.75:038:26Waxing Gibbous19Tue
20Wed12:226.66:340.16:380.85:048:26Waxing Gibbous20Wed
21Thu12:317.61:116.57:220.17:240.85:048:26Full Moon21Thu
22Fri1:167.51:566.68:070.08:060.95:048:26Full Moon22Fri
23Sat1:587.52:386.68:480.08:470.95:048:26Full Moon23Sat
24Sun2:387.53:176.69:250.19:250.95:058:26Full Moon24Sun
25Mon3:167.43:546.610:010.110:031.05:058:27Waning Gibbous25Mon
26Tue3:537.34:316.610:360.210:411.05:058:27Waning Gibbous26Tue
27Wed4:307.25:076.611:110.311:211.05:068:27Waning Gibbous27Wed
28Thu5:087.05:456.611:480.45:068:27Waning Gibbous28Thu
29Fri5:496.86:256.712:031.012:270.55:078:27Third Quarter29Fri
30Sat6:346.77:076.812:491.01:080.65:078:26Third Quarter30Sat
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 6:55 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 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