Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

48°
H 63°
L 45°
NNE
6mph
High tide
11:52 am
Photo Credits

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

TIDE TIMES for Wednesday, September 23, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 6:09 pm (1.1 ft)
Next high tide : in 4h 16m at 11:52 am (6.3 ft)
Sunset today : 6:39 pm
Sunrise tomorrow : 6:32 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Sep 1932

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu1:558.02:257.48:34-0.58:47-0.26:077:19New Moon1Thu
2Fri2:408.13:067.89:15-0.69:34-0.56:087:17Waxing Crescent2Fri
3Sat3:268.13:498.19:58-0.610:22-0.76:107:15Waxing Crescent3Sat
4Sun4:137.94:348.210:42-0.511:13-0.66:117:14Waxing Crescent4Sun
5Mon5:047.65:238.111:30-0.26:127:12Waxing Crescent5Mon
6Tue6:007.26:187.912:07-0.512:220.16:137:10First Quarter6Tue
7Wed7:016.87:197.71:07-0.21:200.56:147:08First Quarter7Wed
8Thu8:086.58:257.42:110.02:240.86:157:06First Quarter8Thu
9Fri9:186.39:357.33:200.33:321.06:167:05Waxing Gibbous9Fri
10Sat10:276.310:447.44:320.34:441.06:177:03Waxing Gibbous10Sat
11Sun11:306.511:457.55:380.25:480.86:187:01Waxing Gibbous11Sun
12Mon12:246.76:340.16:440.66:196:59Waxing Gibbous12Mon
13Tue12:387.51:126.97:220.07:340.46:206:58Full Moon13Tue
14Wed1:267.61:557.18:050.08:190.26:226:56Full Moon14Wed
15Thu2:107.52:337.28:440.19:000.26:236:54Full Moon15Thu
16Fri2:507.33:097.29:200.29:390.26:246:52Full Moon16Fri
17Sat3:297.13:437.29:540.410:170.36:256:50Waning Gibbous17Sat
18Sun4:076.84:177.110:270.710:550.46:266:49Waning Gibbous18Sun
19Mon4:456.64:526.911:031.011:340.66:276:47Waning Gibbous19Mon
20Tue5:266.25:326.811:411.26:286:45Waning Gibbous20Tue
21Wed6:116.06:176.612:180.812:241.56:296:43Third Quarter21Wed
22Thu7:025.77:096.41:071.11:131.76:306:41Third Quarter22Thu
23Fri7:585.68:056.42:011.22:061.86:316:39Third Quarter23Fri
24Sat8:575.69:066.52:591.23:051.76:336:38Third Quarter24Sat
25Sun8:575.79:066.73:001.13:061.55:345:36Waning Crescent25Sun
26Mon9:526.110:027.03:570.84:051.25:355:34Waning Crescent26Mon
27Tue10:406.510:537.44:480.44:580.75:365:32Waning Crescent27Tue
28Wed11:247.111:407.75:330.05:480.15:375:31New Moon28Wed
29Thu12:077.66:16-0.36:35-0.45:385:29New Moon29Thu
30Fri12:288.012:508.16:59-0.57:23-0.85:395:27New Moon30Fri
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 spring phase. Tonight's moon is 90% 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 maximum.

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 Gibbous (90% illuminated). This places Squamscott River, Great Bay, NH in a spring tide cycle, so tidal ranges are near their weekly maximum 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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