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

TIDE TIMES for Friday, June 19, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : in 57m at 12:11 am (0.3 ft)
Next high tide (tomorrow) : 6:04 am (7.8 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 - Sep 2019

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:018.73:328.39:39-1.29:59-0.96:077:19Waxing Crescent1Sun
2Mon3:548.64:228.310:29-1.110:54-0.96:097:17Waxing Crescent2Mon
3Tue4:488.25:158.211:19-0.811:50-0.76:107:15Waxing Crescent3Tue
4Wed5:457.86:108.012:13-0.36:117:14First Quarter4Wed
5Thu6:457.37:087.712:50-0.41:100.16:127:12First Quarter5Thu
6Fri7:486.98:087.41:520.02:090.56:137:10First Quarter6Fri
7Sat8:526.69:117.22:570.23:120.96:147:08First Quarter7Sat
8Sun9:576.410:147.14:030.44:171.06:157:07Waxing Gibbous8Sun
9Mon10:586.411:127.15:070.55:191.06:167:05Waxing Gibbous9Mon
10Tue11:526.56:030.46:130.96:177:03Waxing Gibbous10Tue
11Wed12:047.212:396.66:510.36:590.86:187:01Waxing Gibbous11Wed
12Thu12:497.31:216.77:330.37:410.76:196:59Full Moon12Thu
13Fri1:317.31:596.88:110.28:200.56:216:58Full Moon13Fri
14Sat2:107.32:356.98:450.28:560.56:226:56Full Moon14Sat
15Sun2:467.33:087.09:170.39:300.46:236:54Full Moon15Sun
16Mon3:217.23:397.09:490.310:050.46:246:52Waning Gibbous16Mon
17Tue3:557.04:117.110:210.410:410.46:256:50Waning Gibbous17Tue
18Wed4:316.94:447.010:550.611:190.56:266:49Waning Gibbous18Wed
19Thu5:096.75:227.011:320.76:276:47Waning Gibbous19Thu
20Fri5:526.56:057.012:020.512:150.96:286:45Third Quarter20Fri
21Sat6:416.36:557.012:500.61:031.06:296:43Third Quarter21Sat
22Sun7:356.27:517.01:430.61:561.06:306:41Third Quarter22Sun
23Mon8:366.28:527.22:420.62:561.06:316:40Third Quarter23Mon
24Tue9:406.49:587.43:450.44:000.86:336:38Waning Crescent24Tue
25Wed10:446.711:027.84:490.15:050.46:346:36Waning Crescent25Wed
26Thu11:427.25:49-0.36:050.06:356:34Waning Crescent26Thu
27Fri12:018.112:367.76:43-0.77:02-0.56:366:32New Moon27Fri
28Sat12:568.41:278.17:35-0.97:56-0.96:376:31New Moon28Sat
29Sun1:508.62:178.48:25-1.18:49-1.16:386:29New Moon29Sun
30Mon2:448.53:078.69:14-1.09:42-1.26:396:27Waxing Crescent30Mon
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 3:07 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 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