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 2h 17m 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 - May 2035

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:186.59:046.22:271.43:010.85:377:44Third Quarter1Tue
2Wed9:156.59:576.53:231.33:550.75:357:45Waning Crescent2Wed
3Thu10:136.710:486.84:211.04:480.55:347:46Waning Crescent3Thu
4Fri11:086.911:367.35:170.65:390.35:337:47Waning Crescent4Fri
5Sat11:597.26:090.16:270.05:317:49Waning Crescent5Sat
6Sun12:217.812:497.56:58-0.47:14-0.35:307:50New Moon6Sun
7Mon1:078.21:397.87:47-0.98:01-0.55:297:51New Moon7Mon
8Tue1:548.62:297.98:36-1.28:50-0.65:277:52New Moon8Tue
9Wed2:428.83:217.99:26-1.49:40-0.65:267:53Waxing Crescent9Wed
10Thu3:328.84:137.810:18-1.410:32-0.45:257:54Waxing Crescent10Thu
11Fri4:258.65:097.711:12-1.211:27-0.25:247:55Waxing Crescent11Fri
12Sat5:218.46:097.412:09-0.95:237:56Waxing Crescent12Sat
13Sun6:228.07:127.312:270.11:10-0.65:227:57First Quarter13Sun
14Mon7:277.68:157.21:320.42:13-0.35:217:58First Quarter14Mon
15Tue8:337.39:197.12:390.53:160.05:208:00First Quarter15Tue
16Wed9:407.110:207.23:480.64:200.25:198:01Waxing Gibbous16Wed
17Thu10:447.011:157.34:540.55:190.35:188:02Waxing Gibbous17Thu
18Fri11:417.05:530.36:110.35:178:03Waxing Gibbous18Fri
19Sat12:057.512:337.06:450.16:580.45:168:04Waxing Gibbous19Sat
20Sun12:507.61:206.97:310.07:400.55:158:05Full Moon20Sun
21Mon1:317.62:036.98:14-0.18:190.65:148:06Full Moon21Mon
22Tue2:107.62:446.88:53-0.18:570.75:138:07Full Moon22Tue
23Wed2:467.53:226.89:300.09:330.85:128:08Full Moon23Wed
24Thu3:227.44:006.710:060.010:090.95:118:09Waning Gibbous24Thu
25Fri3:587.34:386.510:420.210:471.05:118:10Waning Gibbous25Fri
26Sat4:357.25:176.411:200.311:271.25:108:10Waning Gibbous26Sat
27Sun5:157.06:006.412:000.45:098:11Waning Gibbous27Sun
28Mon5:596.96:446.412:111.212:440.55:098:12Third Quarter28Mon
29Tue6:466.87:316.412:591.31:300.55:088:13Third Quarter29Tue
30Wed7:376.78:196.61:501.22:180.65:078:14Third Quarter30Wed
31Thu8:316.79:106.92:441.13:090.55:078:15Third Quarter31Thu
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