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

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 2m at 12:50 pm (-0.4 ft)
Next high tide : 6:50 pm (7.2 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:04 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jul 2035

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:556.910:217.84:070.34:220.25:088:26Waning Crescent1Sun
2Mon10:577.011:188.25:08-0.15:200.05:088:26Waning Crescent2Mon
3Tue11:577.26:07-0.56:18-0.25:098:26Waning Crescent3Tue
4Wed12:148.512:557.57:04-0.97:14-0.35:098:26New Moon4Wed
5Thu1:108.81:527.77:59-1.28:10-0.55:108:26New Moon5Thu
6Fri2:058.92:487.88:54-1.49:05-0.55:118:25New Moon6Fri
7Sat3:018.93:437.99:47-1.410:01-0.55:118:25Waxing Crescent7Sat
8Sun3:558.74:377.810:40-1.210:57-0.35:128:24Waxing Crescent8Sun
9Mon4:508.45:317.711:33-1.011:54-0.15:138:24Waxing Crescent9Mon
10Tue5:478.06:277.612:28-0.65:148:24First Quarter10Tue
11Wed6:457.57:237.412:540.21:23-0.25:148:23First Quarter11Wed
12Thu7:457.18:197.31:540.42:180.25:158:23First Quarter12Thu
13Fri8:446.79:147.22:560.63:140.65:168:22First Quarter13Fri
14Sat9:456.410:097.13:580.74:100.85:178:21Waxing Gibbous14Sat
15Sun10:446.311:027.14:580.75:061.05:188:21Waxing Gibbous15Sun
16Mon11:386.311:517.25:530.65:571.05:188:20Waxing Gibbous16Mon
17Tue12:276.36:410.56:431.05:198:19Waxing Gibbous17Tue
18Wed12:357.31:126.47:250.37:251.05:208:19Full Moon18Wed
19Thu1:177.31:546.58:050.28:050.95:218:18Full Moon19Thu
20Fri1:577.42:346.68:430.28:420.85:228:17Full Moon20Fri
21Sat2:357.43:116.69:180.19:190.85:238:16Full Moon21Sat
22Sun3:117.43:466.79:520.09:570.75:248:15Waning Gibbous22Sun
23Mon3:477.44:216.810:260.010:350.75:258:14Waning Gibbous23Mon
24Tue4:247.44:576.911:020.011:160.65:268:14Waning Gibbous24Tue
25Wed5:037.35:367.011:410.05:278:13Waning Gibbous25Wed
26Thu5:477.16:197.112:010.612:240.15:288:12Third Quarter26Thu
27Fri6:367.07:077.312:500.51:110.15:298:11Third Quarter27Fri
28Sat7:306.97:597.41:430.42:010.25:308:10Third Quarter28Sat
29Sun8:286.88:557.62:400.32:570.35:318:08Third Quarter29Sun
30Mon9:326.89:567.83:420.13:560.35:328:07Waning Crescent30Mon
31Tue10:386.910:598.14:46-0.14:590.15:338:06Waning Crescent31Tue
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 3:50 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 transitional phase. Tonight's moon is 37% 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 (37% 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