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

TIDE TIMES for Saturday, August 8, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 4:47 am (0.1 ft)
Next high tide : in 4h 06m at 9:49 pm (7.7 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 5:42 am
Moon phase : Waning Crescent (22% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Oct 1966

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:007.03:137.19:230.59:440.36:406:26Full Moon1Sat
2Sun3:356.93:447.29:540.610:190.36:416:24Waning Gibbous2Sun
3Mon4:096.74:167.110:280.810:560.46:426:22Waning Gibbous3Mon
4Tue4:466.54:527.111:050.911:380.46:446:20Waning Gibbous4Tue
5Wed5:286.35:357.011:461.16:456:19Waning Gibbous5Wed
6Thu6:166.16:257.012:250.512:341.26:466:17Third Quarter6Thu
7Fri7:126.07:237.01:190.61:301.36:476:15Third Quarter7Fri
8Sat8:146.08:277.02:180.62:311.26:486:13Third Quarter8Sat
9Sun9:196.29:357.23:220.53:371.06:496:12Waning Crescent9Sun
10Mon10:246.610:417.54:270.34:440.76:516:10Waning Crescent10Mon
11Tue11:227.111:417.95:28-0.15:470.16:526:08Waning Crescent11Tue
12Wed12:157.66:22-0.46:44-0.46:536:07New Moon12Wed
13Thu12:378.11:058.17:13-0.77:37-0.96:546:05New Moon13Thu
14Fri1:318.31:548.58:01-0.88:30-1.16:556:03New Moon14Fri
15Sat2:238.22:428.68:50-0.89:21-1.26:566:02New Moon15Sat
16Sun3:158.13:308.69:38-0.510:12-1.16:586:00Waxing Crescent16Sun
17Mon4:077.74:188.310:27-0.211:04-0.86:595:58Waxing Crescent17Mon
18Tue5:007.35:107.911:170.311:59-0.47:005:57Waxing Crescent18Tue
19Wed5:576.96:067.512:120.77:015:55First Quarter19Wed
20Thu6:576.57:077.112:590.11:121.17:035:54First Quarter20Thu
21Fri8:006.28:116.82:010.42:151.37:045:52First Quarter21Fri
22Sat9:026.19:146.63:050.73:211.47:055:50First Quarter22Sat
23Sun10:026.210:156.64:070.84:251.47:065:49Waxing Gibbous23Sun
24Mon10:556.311:096.75:040.85:221.27:075:47Waxing Gibbous24Mon
25Tue11:426.611:576.85:520.76:100.97:095:46Waxing Gibbous25Tue
26Wed12:226.86:330.66:530.77:105:44Waxing Gibbous26Wed
27Thu12:396.912:597.07:090.67:310.47:115:43Full Moon27Thu
28Fri1:196.91:337.27:430.68:070.37:125:42Full Moon28Fri
29Sat1:566.92:057.38:150.68:420.17:145:40Full Moon29Sat
30Sun1:336.81:377.47:480.68:170.16:154:39Full Moon30Sun
31Mon2:096.72:107.48:220.78:530.06:164:37Waning 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 1:18 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 22% 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 Waning Crescent (22% 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