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

TIDE TIMES for Friday, July 17, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 10:39 am (-0.9 ft)
Next high tide : in 1h 00m at 3:54 am (8.4 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jul 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:297.83:086.99:16-0.39:200.65:088:26Full Moon1Fri
2Sat3:117.73:496.89:57-0.210:010.75:098:26Waning Gibbous2Sat
3Sun3:517.54:296.810:350.010:410.85:108:26Waning Gibbous3Sun
4Mon4:307.35:096.711:130.111:230.95:108:26Waning Gibbous4Mon
5Tue5:117.15:506.711:520.35:118:25Waning Gibbous5Tue
6Wed5:546.96:326.612:061.012:320.55:128:25Third Quarter6Wed
7Thu6:396.67:166.612:521.11:140.65:128:25Third Quarter7Thu
8Fri7:276.48:006.71:401.21:580.85:138:24Third Quarter8Fri
9Sat8:186.38:476.82:311.12:440.95:148:24Third Quarter9Sat
10Sun9:126.29:376.93:241.03:340.95:158:23Waning Crescent10Sun
11Mon10:086.210:287.24:190.84:270.95:158:23Waning Crescent11Mon
12Tue11:056.411:207.55:150.55:210.75:168:22Waning Crescent12Tue
13Wed11:586.66:080.16:130.55:178:21Waning Crescent13Wed
14Thu12:107.912:496.96:58-0.37:040.25:188:21New Moon14Thu
15Fri1:008.21:407.27:48-0.77:56-0.15:198:20New Moon15Fri
16Sat1:518.52:317.58:38-1.08:48-0.35:208:19New Moon16Sat
17Sun2:428.73:227.79:28-1.29:41-0.55:208:19Waxing Crescent17Sun
18Mon3:358.74:137.910:18-1.210:35-0.55:218:18Waxing Crescent18Mon
19Tue4:288.65:068.011:09-1.111:31-0.45:228:17Waxing Crescent19Tue
20Wed5:248.36:027.912:03-0.95:238:16First Quarter20Wed
21Thu6:237.96:597.912:30-0.312:58-0.65:248:15First Quarter21Thu
22Fri7:257.57:587.81:32-0.11:56-0.35:258:14First Quarter22Fri
23Sat8:287.18:587.72:360.02:550.15:268:14First Quarter23Sat
24Sun9:336.89:597.63:410.13:570.45:278:13Waxing Gibbous24Sun
25Mon10:386.710:587.64:470.24:590.65:288:12Waxing Gibbous25Mon
26Tue11:376.711:537.65:480.15:570.65:298:11Waxing Gibbous26Tue
27Wed12:316.76:420.06:490.65:308:10Waxing Gibbous27Wed
28Thu12:427.61:206.77:310.07:360.65:318:08Full Moon28Thu
29Fri1:287.62:046.88:15-0.18:190.65:328:07Full Moon29Fri
30Sat2:107.62:456.88:550.08:590.65:338:06Full Moon30Sat
31Sun2:507.53:236.89:320.09:380.65:348:05Full Moon31Sun
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 7:16 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 14% 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 Waxing Crescent (14% 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