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

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 2:53 pm (1.0 ft)
Next high tide : in 5h 27m at 8:32 am (6.3 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 5:24 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Apr 1995

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:517.72:177.38:26-0.48:390.15:256:09New Moon1Sat
2Sun3:287.63:567.110:05-0.310:150.36:247:10Waxing Crescent2Sun
3Mon4:057.44:356.810:43-0.110:520.56:227:11Waxing Crescent3Mon
4Tue4:427.25:166.611:230.111:310.86:207:12Waxing Crescent4Tue
5Wed5:227.06:006.312:050.46:187:13Waxing Crescent5Wed
6Thu6:066.86:486.112:141.112:510.66:177:15First Quarter6Thu
7Fri6:556.57:405.91:021.31:400.86:157:16First Quarter7Fri
8Sat7:486.48:345.91:541.42:330.96:137:17First Quarter8Sat
9Sun8:456.49:306.02:491.43:290.96:127:18First Quarter9Sun
10Mon9:446.410:246.33:481.34:250.86:107:19Waxing Gibbous10Mon
11Tue10:416.711:146.74:461.05:170.66:087:20Waxing Gibbous11Tue
12Wed11:337.011:597.25:400.66:050.26:067:22Waxing Gibbous12Wed
13Thu12:217.36:290.16:49-0.16:057:23Waxing Gibbous13Thu
14Fri12:427.61:087.67:16-0.47:34-0.46:037:24Full Moon14Fri
15Sat1:268.11:557.88:03-0.88:19-0.66:017:25Full Moon15Sat
16Sun2:118.42:447.98:50-1.29:06-0.66:007:26Full Moon16Sun
17Mon2:578.63:337.99:39-1.39:54-0.65:587:27Waning Gibbous17Mon
18Tue3:458.64:247.710:29-1.310:44-0.45:577:29Waning Gibbous18Tue
19Wed4:368.55:197.511:23-1.111:39-0.25:557:30Waning Gibbous19Wed
20Thu5:328.26:197.312:20-0.85:537:31Third Quarter20Thu
21Fri6:347.97:237.112:380.11:22-0.55:527:32Third Quarter21Fri
22Sat7:407.58:297.01:430.42:26-0.25:507:33Third Quarter22Sat
23Sun8:487.39:347.02:520.53:330.05:497:34Third Quarter23Sun
24Mon9:567.110:367.14:020.54:380.15:477:35Waning Crescent24Mon
25Tue11:007.111:327.35:090.45:370.25:467:37Waning Crescent25Tue
26Wed11:577.16:070.26:280.25:447:38Waning Crescent26Wed
27Thu12:217.512:477.16:580.07:140.25:437:39Waning Crescent27Thu
28Fri1:057.61:337.17:44-0.27:560.35:417:40New Moon28Fri
29Sat1:467.62:167.18:27-0.28:350.45:407:41New Moon29Sat
30Sun2:257.62:567.09:06-0.29:110.55:387:42New Moon30Sun
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 11:42 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 First 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