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

TIDE TIMES for Thursday, July 30, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 9:43 am (0.1 ft)
Next high tide (tomorrow) : in 5h 22m at 3:02 am (7.4 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 5:32 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jan 1983

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:137.52:238.78:28-0.59:11-1.47:154:19Waning Gibbous1Sat
2Sun3:067.53:188.59:23-0.410:05-1.27:154:20Waning Gibbous2Sun
3Mon4:017.54:148.210:20-0.311:00-0.97:154:20Waning Gibbous3Mon
4Tue4:597.45:147.711:200.011:58-0.67:154:21Third Quarter4Tue
5Wed5:587.36:177.312:240.27:154:22Third Quarter5Wed
6Thu6:577.27:216.912:56-0.21:290.37:154:23Third Quarter6Thu
7Fri7:567.18:266.61:540.22:350.47:144:24Third Quarter7Fri
8Sat8:547.19:296.42:540.53:400.47:144:25Waning Crescent8Sat
9Sun9:507.110:286.33:530.74:400.37:144:26Waning Crescent9Sun
10Mon10:417.211:206.34:480.85:320.17:144:27Waning Crescent10Mon
11Tue11:287.25:360.86:180.07:134:29Waning Crescent11Tue
12Wed12:076.312:117.36:200.87:010.07:134:30New Moon12Wed
13Thu12:506.412:517.37:010.87:40-0.17:134:31New Moon13Thu
14Fri1:296.41:297.37:390.88:16-0.17:124:32New Moon14Fri
15Sat2:076.42:067.38:150.78:500.07:124:33New Moon15Sat
16Sun2:426.42:417.28:500.79:230.07:114:34Waxing Crescent16Sun
17Mon3:166.43:167.19:270.89:570.17:114:36Waxing Crescent17Mon
18Tue3:516.43:537.010:050.810:330.27:104:37Waxing Crescent18Tue
19Wed4:276.44:336.810:460.811:120.37:104:38Waxing Crescent19Wed
20Thu5:066.55:176.611:310.811:540.47:094:39First Quarter20Thu
21Fri5:496.66:076.412:210.77:084:41First Quarter21Fri
22Sat6:376.77:026.312:410.51:150.77:084:42First Quarter22Sat
23Sun7:296.98:036.21:310.62:130.57:074:43First Quarter23Sun
24Mon8:267.19:086.32:280.63:170.27:064:44Waxing Gibbous24Mon
25Tue9:277.410:136.53:290.54:21-0.17:054:46Waxing Gibbous25Tue
26Wed10:277.811:136.84:300.35:20-0.67:044:47Waxing Gibbous26Wed
27Thu11:258.25:290.06:17-1.07:034:48Full Moon27Thu
28Fri12:097.112:228.56:25-0.37:11-1.37:034:50Full Moon28Fri
29Sat1:047.41:178.77:21-0.68:04-1.47:024:51Full Moon29Sat
30Sun1:577.62:118.78:15-0.78:55-1.47:014:52Waning Gibbous30Sun
31Mon2:497.73:048.59:09-0.79:45-1.37:004:54Waning Gibbous31Mon
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 6:22 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 99% 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 Full Moon (99% 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