Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

47°
H 66°
L 43°
N
1mph
High tide
8:15 am
Photo Credits

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 2:25 pm (1.7 ft)
Next high tide : in 1h 13m at 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 - Sep 1938

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:196.57:377.01:260.41:390.96:077:20First Quarter1Thu
2Fri8:176.28:346.82:240.72:351.26:087:18First Quarter2Fri
3Sat9:166.09:336.73:250.93:341.36:097:16First Quarter3Sat
4Sun10:156.010:306.74:260.94:351.36:107:14Waxing Gibbous4Sun
5Mon11:096.111:226.95:220.85:301.26:117:13Waxing Gibbous5Mon
6Tue11:576.36:100.76:171.06:127:11Waxing Gibbous6Tue
7Wed12:097.012:406.66:520.57:000.86:137:09Waxing Gibbous7Wed
8Thu12:517.21:186.87:290.47:390.56:157:07Full Moon8Thu
9Fri1:307.31:547.08:040.28:160.36:167:06Full Moon9Fri
10Sat2:087.32:297.28:370.18:530.26:177:04Full Moon10Sat
11Sun2:457.43:037.49:110.19:310.06:187:02Full Moon11Sun
12Mon3:227.33:377.59:470.110:10-0.16:197:00Waning Gibbous12Mon
13Tue4:007.24:157.610:250.110:53-0.16:206:58Waning Gibbous13Tue
14Wed4:427.14:577.611:070.211:40-0.16:216:57Waning Gibbous14Wed
15Thu5:296.95:467.611:540.36:226:55Third Quarter15Thu
16Fri6:236.86:417.512:320.012:470.56:236:53Third Quarter16Fri
17Sat7:236.67:427.51:300.11:450.66:246:51Third Quarter17Sat
18Sun8:286.68:497.52:320.22:490.66:256:49Third Quarter18Sun
19Mon9:356.79:577.63:390.13:570.56:276:48Waning Crescent19Mon
20Tue10:417.011:037.84:450.05:050.26:286:46Waning Crescent20Tue
21Wed11:417.45:47-0.36:07-0.16:296:44Waning Crescent21Wed
22Thu12:038.012:347.76:42-0.57:03-0.56:306:42New Moon22Thu
23Fri12:578.11:248.07:32-0.67:56-0.76:316:40New Moon23Fri
24Sat1:498.12:128.28:20-0.68:46-0.86:326:39New Moon24Sat
25Sun1:398.01:588.28:06-0.58:34-0.85:335:37Waxing Crescent25Sun
26Mon2:277.82:438.08:51-0.39:21-0.65:345:35Waxing Crescent26Mon
27Tue3:147.53:277.89:360.110:08-0.25:355:33Waxing Crescent27Tue
28Wed4:017.14:137.510:210.510:570.15:375:31Waxing Crescent28Wed
29Thu4:516.75:027.111:090.811:490.55:385:30First Quarter29Thu
30Fri5:446.45:566.812:011.15:395:28First Quarter30Fri
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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