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

TIDE TIMES for Saturday, August 22, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 4:07 pm (1.7 ft)
Next high tide : in 4h 57m at 9:55 am (5.7 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 5:57 am
Moon phase : Waxing Gibbous (73% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 1946

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:218.31:537.98:00-1.08:16-0.65:377:43New Moon1Wed
2Thu2:088.72:448.08:51-1.39:05-0.65:367:45New Moon2Thu
3Fri2:578.83:367.99:42-1.49:55-0.55:347:46Waxing Crescent3Fri
4Sat3:478.84:307.710:34-1.310:47-0.25:337:47Waxing Crescent4Sat
5Sun4:398.55:277.411:29-1.111:430.15:327:48Waxing Crescent5Sun
6Mon5:378.16:297.012:29-0.75:307:49First Quarter6Mon
7Tue6:407.77:346.812:440.51:32-0.35:297:50First Quarter7Tue
8Wed7:477.38:396.71:510.82:370.05:287:51First Quarter8Wed
9Thu8:557.19:436.73:000.93:430.35:277:52First Quarter9Thu
10Fri10:016.910:436.84:100.94:450.45:257:54Waxing Gibbous10Fri
11Sat11:036.911:357.05:140.85:410.45:247:55Waxing Gibbous11Sat
12Sun11:576.86:100.66:290.55:237:56Waxing Gibbous12Sun
13Mon12:217.212:456.86:580.37:110.55:227:57Waxing Gibbous13Mon
14Tue1:027.31:296.87:420.27:490.65:217:58Full Moon14Tue
15Wed1:397.42:106.78:210.18:250.75:207:59Full Moon15Wed
16Thu2:157.42:496.78:590.19:000.95:198:00Full Moon16Thu
17Fri2:497.43:266.69:340.19:351.05:188:01Full Moon17Fri
18Sat3:237.34:036.510:090.210:101.15:178:02Waning Gibbous18Sat
19Sun3:587.24:416.310:450.310:471.25:168:03Waning Gibbous19Sun
20Mon4:357.15:216.211:230.411:281.35:158:04Waning Gibbous20Mon
21Tue5:157.06:046.112:060.55:148:05Waning Gibbous21Tue
22Wed6:016.96:516.112:131.412:520.55:138:06Third Quarter22Wed
23Thu6:516.87:416.21:031.41:400.65:128:07Third Quarter23Thu
24Fri7:456.88:336.41:561.32:320.55:128:08Third Quarter24Fri
25Sat8:436.89:266.82:541.13:250.45:118:09Third Quarter25Sat
26Sun9:436.910:197.23:540.84:200.35:108:10Waning Crescent26Sun
27Mon10:437.111:117.74:540.35:140.15:098:11Waning Crescent27Mon
28Tue11:417.35:52-0.26:07-0.25:098:12Waning Crescent28Tue
29Wed12:028.212:367.56:46-0.76:58-0.35:088:13New Moon29Wed
30Thu12:528.61:317.77:39-1.17:50-0.45:088:13New Moon30Thu
31Fri1:448.82:267.78:32-1.38:43-0.45:078:14New Moon31Fri
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 1:01 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 transitional phase. Tonight's moon is 73% 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 Waxing Gibbous (73% 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