Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

64°
H 66°
L 44°
ENE
4mph
Low tide
2:25 pm
Photo Credits

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 2h 08m at 2:25 pm (1.7 ft)
Next high tide : 8:24 pm (6.4 ft)
Sunset today : 6:46 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Mar 1938

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:346.712:457.36:530.37:18-0.16:205:32New Moon1Tue
2Wed1:107.01:237.47:300.07:52-0.36:185:33New Moon2Wed
3Thu1:447.32:007.58:09-0.28:28-0.36:165:34New Moon3Thu
4Fri2:197.52:387.58:48-0.49:05-0.46:155:35Waxing Crescent4Fri
5Sat2:557.63:197.49:29-0.59:45-0.36:135:37Waxing Crescent5Sat
6Sun3:357.74:047.210:14-0.510:30-0.16:115:38Waxing Crescent6Sun
7Mon4:207.74:546.911:04-0.411:190.16:105:39First Quarter7Mon
8Tue5:127.65:526.711:59-0.26:085:40First Quarter8Tue
9Wed6:117.46:566.512:150.31:01-0.16:065:41First Quarter9Wed
10Thu7:167.38:056.41:170.52:070.06:055:43First Quarter10Thu
11Fri8:267.39:166.62:250.53:180.06:035:44Waxing Gibbous11Fri
12Sat9:377.410:216.93:370.44:25-0.26:015:45Waxing Gibbous12Sat
13Sun10:417.611:187.34:440.15:24-0.55:595:46Waxing Gibbous13Sun
14Mon11:387.85:43-0.26:16-0.75:585:48Full Moon14Mon
15Tue12:097.612:308.06:37-0.67:04-0.75:565:49Full Moon15Tue
16Wed12:567.81:197.97:26-0.77:50-0.75:545:50Full Moon16Wed
17Thu1:417.92:067.88:13-0.88:32-0.55:525:51Full Moon17Thu
18Fri2:237.92:507.58:58-0.79:14-0.25:515:52Waning Gibbous18Fri
19Sat3:047.73:337.29:41-0.59:540.15:495:53Waning Gibbous19Sat
20Sun3:457.54:186.810:25-0.210:360.55:475:55Waning Gibbous20Sun
21Mon4:287.25:056.411:110.211:220.85:455:56Waning Gibbous21Mon
22Tue5:146.95:566.112:000.55:435:57Third Quarter22Tue
23Wed6:066.66:505.912:111.112:530.85:425:58Third Quarter23Wed
24Thu7:016.47:485.81:041.41:501.05:405:59Third Quarter24Thu
25Fri8:006.38:475.82:021.52:491.05:386:00Third Quarter25Fri
26Sat9:006.39:436.03:041.43:471.05:366:02Waning Crescent26Sat
27Sun9:566.510:316.34:031.24:380.85:356:03Waning Crescent27Sun
28Mon10:456.711:146.74:540.95:210.55:336:04Waning Crescent28Mon
29Tue11:307.011:537.05:380.56:000.25:316:05Waning Crescent29Tue
30Wed12:127.26:200.16:380.05:296:06New Moon30Wed
31Thu12:317.412:537.47:01-0.37:17-0.25:286:07New Moon31Thu
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 neap phase. Tonight's moon is 58% 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 minimum.

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 (58% illuminated). This places Squamscott River, Great Bay, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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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