Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

58°
H -°
L 47°
NNW
6mph
Low tide
2:19 am
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 1h 49m at 2:19 am (1.1 ft)
Next high tide : 8:15 am (5.7 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 - May 1939

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:157.66:23-0.46:43-0.35:387:43Waxing Gibbous1Mon
2Tue12:378.11:097.67:17-0.77:32-0.35:367:44Full Moon2Tue
3Wed1:268.32:007.68:08-0.98:20-0.25:357:45Full Moon3Wed
4Thu2:138.32:497.58:56-0.99:06-0.15:337:46Full Moon4Thu
5Fri2:588.23:367.39:42-0.89:510.25:327:48Waning Gibbous5Fri
6Sat3:428.04:217.110:27-0.510:360.45:317:49Waning Gibbous6Sat
7Sun4:267.75:076.811:12-0.211:210.75:307:50Waning Gibbous7Sun
8Mon5:117.45:556.611:580.15:287:51Waning Gibbous8Mon
9Tue5:597.06:456.412:091.012:460.45:277:52Third Quarter9Tue
10Wed6:506.77:366.31:001.21:350.75:267:53Third Quarter10Wed
11Thu7:446.58:286.31:541.42:260.85:257:54Third Quarter11Thu
12Fri8:396.39:206.42:501.43:171.05:237:55Third Quarter12Fri
13Sat9:366.310:116.53:471.34:091.05:227:56Waning Crescent13Sat
14Sun10:316.310:586.84:431.24:591.05:217:58Waning Crescent14Sun
15Mon11:226.411:427.15:350.95:450.85:207:59Waning Crescent15Mon
16Tue12:096.66:200.56:270.75:198:00Waning Crescent16Tue
17Wed12:227.412:536.87:030.27:080.55:188:01New Moon17Wed
18Thu1:027.61:376.97:45-0.27:500.45:178:02New Moon18Thu
19Fri1:437.92:207.18:27-0.48:330.25:168:03New Moon19Fri
20Sat2:258.13:057.29:11-0.69:180.15:158:04New Moon20Sat
21Sun3:108.23:517.39:57-0.810:060.15:148:05Waxing Crescent21Sun
22Mon3:578.34:397.310:44-0.810:560.15:138:06Waxing Crescent22Mon
23Tue4:478.25:327.311:35-0.711:510.25:138:07Waxing Crescent23Tue
24Wed5:428.06:297.312:30-0.65:128:08First Quarter24Wed
25Thu6:437.77:297.312:500.31:27-0.45:118:09First Quarter25Thu
26Fri7:467.58:297.41:530.32:26-0.25:108:10First Quarter26Fri
27Sat8:527.39:307.52:590.33:27-0.15:108:11First Quarter27Sat
28Sun9:587.110:307.74:060.24:290.15:098:11Waxing Gibbous28Sun
29Mon11:027.111:267.95:110.05:280.15:088:12Waxing Gibbous29Mon
30Tue12:017.16:11-0.26:230.25:088:13Waxing Gibbous30Tue
31Wed12:188.012:557.17:04-0.47:130.25:078:14Full Moon31Wed
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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