Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

56°
H 64°
L 46°
NNE
10mph
High tide
11:06 am
Photo Credits

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

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 5:22 pm (1.4 ft)
Next high tide : in 2h 43m at 11:06 am (6.0 ft)
Sunset today : 6:41 pm
Sunrise tomorrow : 6:31 am
Moon phase : Waxing Gibbous (83% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Sep 1934

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:076.28:236.92:140.52:231.26:077:20Third Quarter1Sat
2Sun9:096.09:246.73:170.83:251.46:087:18Third Quarter2Sun
3Mon10:125.910:256.74:220.94:281.56:097:16Waning Crescent3Mon
4Tue11:096.011:206.85:220.85:271.46:107:14Waning Crescent4Tue
5Wed11:586.16:120.76:171.26:117:13Waning Crescent5Wed
6Thu12:087.012:416.46:550.67:001.06:127:11Waning Crescent6Thu
7Fri12:517.11:206.67:330.47:390.76:137:09New Moon7Fri
8Sat1:307.21:566.88:070.38:160.66:157:07New Moon8Sat
9Sun2:077.22:297.08:390.38:520.46:167:06New Moon9Sun
10Mon2:437.23:017.19:100.39:270.36:177:04New Moon10Mon
11Tue3:187.13:327.39:420.310:030.26:187:02Waxing Crescent11Tue
12Wed3:537.04:057.310:160.410:420.26:197:00Waxing Crescent12Wed
13Thu4:316.84:427.410:540.511:240.26:206:58Waxing Crescent13Thu
14Fri5:136.65:257.311:360.76:216:57Waxing Crescent14Fri
15Sat6:026.46:167.312:130.312:240.86:226:55First Quarter15Sat
16Sun6:586.27:147.31:070.41:190.96:236:53First Quarter16Sun
17Mon8:016.28:187.32:080.52:201.06:246:51First Quarter17Mon
18Tue9:096.29:287.43:140.43:270.96:256:49Waxing Gibbous18Tue
19Wed10:186.510:367.64:220.34:370.66:276:48Waxing Gibbous19Wed
20Thu11:206.911:397.95:26-0.15:420.26:286:46Waxing Gibbous20Thu
21Fri12:167.46:23-0.46:41-0.26:296:44Full Moon21Fri
22Sat12:368.11:077.87:14-0.67:36-0.66:306:42Full Moon22Sat
23Sun1:308.21:558.18:03-0.78:28-0.86:316:40Full Moon23Sun
24Mon2:218.12:428.38:50-0.69:18-0.96:326:39Full Moon24Mon
25Tue3:117.93:288.29:36-0.410:07-0.86:336:37Waning Gibbous25Tue
26Wed4:007.64:138.010:22-0.110:56-0.56:346:35Waning Gibbous26Wed
27Thu4:507.25:017.711:080.311:47-0.16:356:33Waning Gibbous27Thu
28Fri5:416.85:517.311:580.86:376:31Third Quarter28Fri
29Sat6:376.46:476.912:410.312:511.26:386:30Third Quarter29Sat
30Sun6:356.16:466.71:400.712:491.45:395:28Third Quarter30Sun
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 83% 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 (83% 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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