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

TIDE TIMES for Wednesday, August 5, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 6h 27m at 12:57 pm (0.3 ft)
Next high tide : 6:52 pm (7.4 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 5:38 am
Moon phase : Third Quarter (55% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jan 1972

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:077.01:158.27:200.18:05-0.97:154:18Full Moon1Sat
2Sun1:577.02:058.18:110.18:52-0.77:154:19Waning Gibbous2Sun
3Mon2:457.02:527.89:000.29:37-0.57:154:20Waning Gibbous3Mon
4Tue3:306.93:387.59:470.310:21-0.27:154:21Waning Gibbous4Tue
5Wed4:156.84:257.110:350.511:050.17:154:22Waning Gibbous5Wed
6Thu5:016.75:146.711:260.711:490.57:154:23Third Quarter6Thu
7Fri5:486.66:066.312:180.97:154:24Third Quarter7Fri
8Sat6:356.57:005.912:350.81:121.07:144:25Third Quarter8Sat
9Sun7:256.47:575.71:231.12:081.17:144:26Third Quarter9Sun
10Mon8:176.48:575.62:141.33:081.17:144:27Waning Crescent10Mon
11Tue9:116.59:555.63:091.44:060.97:144:28Waning Crescent11Tue
12Wed10:036.610:475.84:041.44:580.77:134:29Waning Crescent12Wed
13Thu10:516.911:346.04:551.35:440.47:134:30Waning Crescent13Thu
14Fri11:357.25:401.06:260.17:134:32New Moon14Fri
15Sat12:176.212:187.46:230.87:06-0.17:124:33New Moon15Sat
16Sun12:586.412:597.77:050.57:45-0.47:124:34New Moon16Sun
17Mon1:376.71:417.97:480.28:24-0.67:114:35New Moon17Mon
18Tue2:177.02:237.98:310.09:04-0.77:104:36Waxing Crescent18Tue
19Wed2:577.23:067.99:16-0.29:46-0.77:104:38Waxing Crescent19Wed
20Thu3:397.43:537.710:04-0.310:30-0.67:094:39Waxing Crescent20Thu
21Fri4:247.54:447.410:55-0.311:18-0.47:094:40First Quarter21Fri
22Sat5:147.65:407.011:51-0.27:084:41First Quarter22Sat
23Sun6:087.56:426.712:10-0.112:51-0.17:074:43First Quarter23Sun
24Mon7:077.47:496.41:070.21:560.07:064:44First Quarter24Mon
25Tue8:117.49:006.32:090.53:060.07:064:45Waxing Gibbous25Tue
26Wed9:197.410:096.33:160.64:16-0.17:054:47Waxing Gibbous26Wed
27Thu10:247.511:116.54:240.65:19-0.37:044:48Waxing Gibbous27Thu
28Fri11:237.75:260.56:15-0.47:034:49Full Moon28Fri
29Sat12:066.712:167.86:210.37:05-0.67:024:51Full Moon29Sat
30Sun12:566.81:067.87:110.17:51-0.67:014:52Full Moon30Sun
31Mon1:427.01:517.87:580.18:33-0.57:004:53Full Moon31Mon
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 3:54 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 neap phase. Tonight's moon is 55% 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 minimum.

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 Third Quarter (55% illuminated). This places Squamscott River, Great Bay, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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