Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

52°
H 79°
L 61°
SW
2mph
Low tide
11:50 am
Photo Credits

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 6h 09m at 11:50 am (0.9 ft)
Next high tide : 5:43 pm (7.1 ft)
Sunset today : 6:52 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - May 1943

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:497.55:580.06:23-0.25:377:43Waning Crescent1Sat
2Sun12:187.712:447.66:53-0.37:13-0.25:367:44New Moon2Sun
3Mon1:067.91:357.67:43-0.57:59-0.25:357:45New Moon3Mon
4Tue1:528.02:227.58:31-0.68:430.05:337:46New Moon4Tue
5Wed2:358.03:077.39:15-0.69:250.25:327:48New Moon5Wed
6Thu3:167.93:517.19:58-0.510:060.45:317:49Waxing Crescent6Thu
7Fri3:557.74:336.910:40-0.310:470.75:297:50Waxing Crescent7Fri
8Sat4:367.45:176.611:220.011:291.05:287:51Waxing Crescent8Sat
9Sun5:187.16:036.412:060.35:277:52Waxing Crescent9Sun
10Mon6:056.96:536.312:151.212:530.55:267:53First Quarter10Mon
11Tue6:556.67:446.21:051.41:420.75:257:54First Quarter11Tue
12Wed7:496.58:366.21:571.52:320.95:237:55First Quarter12Wed
13Thu8:446.49:286.32:531.53:250.95:227:57First Quarter13Thu
14Fri9:406.410:196.53:501.44:170.95:217:58Waxing Gibbous14Fri
15Sat10:356.511:066.84:461.25:070.85:207:59Waxing Gibbous15Sat
16Sun11:266.711:497.25:370.85:520.65:198:00Waxing Gibbous16Sun
17Mon12:136.96:240.46:360.45:188:01Waxing Gibbous17Mon
18Tue12:307.612:597.17:08-0.17:190.15:178:02Full Moon18Tue
19Wed1:117.91:457.37:53-0.58:020.05:168:03Full Moon19Wed
20Thu1:548.22:317.48:38-0.88:48-0.15:158:04Full Moon20Thu
21Fri2:408.43:197.59:25-1.09:36-0.15:148:05Waning Gibbous21Fri
22Sat3:278.54:097.510:14-1.010:26-0.15:138:06Waning Gibbous22Sat
23Sun4:178.45:027.411:05-1.011:190.05:138:07Waning Gibbous23Sun
24Mon5:118.36:007.312:00-0.85:128:08Waning Gibbous24Mon
25Tue6:118.07:017.212:180.212:59-0.65:118:09Third Quarter25Tue
26Wed7:147.78:047.21:210.42:00-0.35:108:10Third Quarter26Wed
27Thu8:207.49:067.32:270.53:02-0.15:108:11Third Quarter27Thu
28Fri9:277.210:087.43:350.44:050.05:098:12Waning Crescent28Fri
29Sat10:337.111:057.64:420.35:060.15:088:12Waning Crescent29Sat
30Sun11:337.111:577.75:440.16:010.25:088:13Waning Crescent30Sun
31Mon12:287.16:39-0.16:510.25:078:14Waning Crescent31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

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Common Questions About Squamscott River, Great Bay, NH Tides

Collapse All
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 30% 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 (30% 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

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