43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

43°
H 64°
L 52°
NNE
3mph
High tide
8:07 am

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

TIDE TIMES for Sunday, October 4, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 2:23 pm (0.9 ft)
Next high tide : in 2h 46m at 8:07 am (6.4 ft)
Sunset today : 6:19 pm
Sunrise tomorrow : 6:44 am
Moon phase : Third Quarter (38% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Apr 1912

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:267.712:497.96:56-0.57:20-0.65:256:09Full Moon1Mon
2Tue1:127.91:377.87:45-0.88:04-0.55:236:10Full Moon2Tue
3Wed1:558.02:237.68:31-0.88:46-0.25:226:11Full Moon3Wed
4Thu2:367.93:087.39:16-0.79:270.15:206:12Waning Gibbous4Thu
5Fri3:167.73:536.910:00-0.410:090.55:186:14Waning Gibbous5Fri
6Sat3:587.44:406.510:450.010:530.95:166:15Waning Gibbous6Sat
7Sun4:437.05:316.111:340.311:421.35:156:16Third Quarter7Sun
8Mon5:346.76:265.812:270.75:136:17Third Quarter8Mon
9Tue6:306.47:245.712:361.61:251.05:116:18Third Quarter9Tue
10Wed7:306.28:245.61:341.72:261.15:106:19Third Quarter10Wed
11Thu8:326.29:225.82:371.83:261.15:086:21Third Quarter11Thu
12Fri9:326.310:136.13:401.64:201.05:066:22Waning Crescent12Fri
13Sat10:246.510:576.44:341.35:040.75:056:23Waning Crescent13Sat
14Sun11:096.711:356.85:210.95:430.55:036:24Waning Crescent14Sun
15Mon11:516.96:020.56:190.45:016:25New Moon15Mon
16Tue12:117.112:327.06:410.26:540.25:006:26New Moon16Tue
17Wed12:467.51:127.17:21-0.27:310.24:586:27New Moon17Wed
18Thu1:217.71:527.28:01-0.48:100.14:566:29New Moon18Thu
19Fri1:597.92:347.18:43-0.68:510.24:556:30Waxing Crescent19Fri
20Sat2:408.03:197.09:27-0.69:360.34:536:31Waxing Crescent20Sat
21Sun3:257.94:096.810:15-0.510:250.54:526:32Waxing Crescent21Sun
22Mon4:157.85:056.611:09-0.311:200.74:506:33First Quarter22Mon
23Tue5:137.66:086.412:09-0.14:486:34First Quarter23Tue
24Wed6:197.37:166.412:230.91:140.14:476:36First Quarter24Wed
25Thu7:297.28:246.51:311.02:220.24:456:37First Quarter25Thu
26Fri8:417.19:286.82:440.93:280.14:446:38Waxing Gibbous26Fri
27Sat9:487.210:267.23:540.64:290.04:426:39Waxing Gibbous27Sat
28Sun10:497.311:177.64:570.25:22-0.14:416:40Waxing Gibbous28Sun
29Mon11:437.45:52-0.26:10-0.14:406:41Full Moon29Mon
30Tue12:037.812:337.46:42-0.46:550.04:386:42Full Moon30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

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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 38% 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 Third Quarter (38% 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