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

TIDE TIMES for Monday, July 13, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 8:01 am (-0.9 ft)
Next high tide (tomorrow) : in 1h 42m at 1:07 am (8.5 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:16 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 2000

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:577.06:070.56:260.25:367:44Waning Crescent1Mon
2Tue12:217.412:447.36:530.07:090.05:357:46New Moon2Tue
3Wed1:027.81:307.57:38-0.47:52-0.25:337:47New Moon3Wed
4Thu1:448.22:177.68:24-0.88:37-0.35:327:48New Moon4Thu
5Fri2:298.43:057.79:12-1.19:24-0.45:317:49New Moon5Fri
6Sat3:158.63:547.610:00-1.210:13-0.35:297:50Waxing Crescent6Sat
7Sun4:048.54:477.510:51-1.111:04-0.15:287:51Waxing Crescent7Sun
8Mon4:568.35:447.311:46-0.95:277:52Waxing Crescent8Mon
9Tue5:548.06:467.112:010.212:45-0.65:267:53First Quarter9Tue
10Wed6:587.77:507.01:030.41:48-0.35:247:55First Quarter10Wed
11Thu8:057.48:567.02:100.62:53-0.15:237:56First Quarter11Thu
12Fri9:147.210:007.13:190.73:580.05:227:57Waxing Gibbous12Fri
13Sat10:217.110:597.34:290.65:000.15:217:58Waxing Gibbous13Sat
14Sun11:237.111:527.55:330.35:560.15:207:59Waxing Gibbous14Sun
15Mon12:177.16:290.16:460.25:198:00Waxing Gibbous15Mon
16Tue12:397.61:077.17:18-0.17:300.35:188:01Full Moon16Tue
17Wed1:227.71:537.18:04-0.28:120.45:178:02Full Moon17Wed
18Thu2:027.72:367.08:46-0.28:510.65:168:03Full Moon18Thu
19Fri2:417.63:176.89:25-0.29:290.75:158:04Full Moon19Fri
20Sat3:187.53:566.710:03-0.110:060.95:148:05Waning Gibbous20Sat
21Sun3:547.44:356.510:410.110:441.15:138:06Waning Gibbous21Sun
22Mon4:327.25:166.411:190.311:251.25:138:07Waning Gibbous22Mon
23Tue5:137.06:006.312:010.45:128:08Waning Gibbous23Tue
24Wed5:576.86:466.212:091.412:450.65:118:09Third Quarter24Wed
25Thu6:456.77:346.212:561.51:310.75:108:10Third Quarter25Thu
26Fri7:366.68:236.31:471.52:190.75:108:11Third Quarter26Fri
27Sat8:306.59:126.52:411.43:090.75:098:12Third Quarter27Sat
28Sun9:256.610:026.83:371.24:000.75:088:13Waning Crescent28Sun
29Mon10:226.710:517.24:340.84:520.55:088:13Waning Crescent29Mon
30Tue11:176.911:397.75:280.45:430.35:078:14Waning Crescent30Tue
31Wed12:097.16:20-0.16:320.05:078:15Waning Crescent31Wed
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 4:34 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 1% 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 New Moon (1% 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