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

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 12:11 am (0.3 ft)
Next high tide : in 3h 54m at 5:52 pm (7.3 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:04 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 2020

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:587.08:496.42:061.12:490.35:367:45First Quarter1Fri
2Sat9:037.19:516.83:090.93:500.25:347:46Waxing Gibbous2Sat
3Sun10:097.310:507.34:160.64:51-0.15:337:47Waxing Gibbous3Sun
4Mon11:127.511:447.85:200.15:48-0.35:327:48Waxing Gibbous4Mon
5Tue12:107.86:19-0.46:41-0.65:307:49Waxing Gibbous5Tue
6Wed12:358.31:068.07:14-0.97:32-0.75:297:50Full Moon6Wed
7Thu1:258.62:008.08:07-1.28:22-0.75:287:51Full Moon7Thu
8Fri2:158.82:537.98:59-1.49:12-0.55:277:53Full Moon8Fri
9Sat3:048.73:467.79:50-1.310:02-0.25:257:54Waning Gibbous9Sat
10Sun3:548.54:387.410:42-1.110:530.15:247:55Waning Gibbous10Sun
11Mon4:458.25:337.111:35-0.711:470.55:237:56Waning Gibbous11Mon
12Tue5:397.76:316.812:31-0.35:227:57Third Quarter12Tue
13Wed6:387.37:306.512:450.91:290.15:217:58Third Quarter13Wed
14Thu7:386.98:296.41:461.22:290.55:207:59Third Quarter14Thu
15Fri8:396.79:276.42:491.33:270.75:198:00Third Quarter15Fri
16Sat9:406.510:216.53:531.34:240.85:188:01Waning Crescent16Sat
17Sun10:386.411:116.74:531.25:160.85:178:02Waning Crescent17Sun
18Mon11:306.511:546.95:471.06:020.85:168:03Waning Crescent18Mon
19Tue12:176.56:330.76:420.85:158:04Waning Crescent19Tue
20Wed12:347.11:006.67:140.57:190.85:148:05Waning Crescent20Wed
21Thu1:117.21:416.67:520.37:540.85:138:06New Moon21Thu
22Fri1:467.32:206.68:290.28:300.85:128:07New Moon22Fri
23Sat2:217.42:596.69:050.19:060.95:128:08New Moon23Sat
24Sun2:567.53:366.69:420.09:430.95:118:09New Moon24Sun
25Mon3:337.54:156.510:200.010:230.95:108:10Waxing Crescent25Mon
26Tue4:127.54:576.511:020.011:070.95:108:11Waxing Crescent26Tue
27Wed4:567.55:436.511:470.011:561.05:098:12Waxing Crescent27Wed
28Thu5:457.46:356.612:370.05:088:13First Quarter28Thu
29Fri6:407.37:306.712:510.91:310.05:088:14First Quarter29Fri
30Sat7:407.38:276.91:500.92:260.05:078:14First Quarter30Sat
31Sun8:437.29:267.32:520.73:240.05:078:15First Quarter31Sun
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 9:01 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 27% 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 Waxing Crescent (27% 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