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

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 1:45 pm (0.0 ft)
Next high tide : in 1h 02m at 7:05 am (7.3 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:04 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jul 2017

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:047.08:407.12:150.62:390.35:088:26First Quarter1Sat
2Sun9:046.79:357.13:160.73:350.65:088:26First Quarter2Sun
3Mon10:046.410:297.14:180.74:300.85:098:26Waxing Gibbous3Mon
4Tue11:016.311:197.15:160.75:231.05:108:26Waxing Gibbous4Tue
5Wed11:536.36:080.66:111.05:108:25Waxing Gibbous5Wed
6Thu12:057.212:406.46:540.46:551.05:118:25Waxing Gibbous6Thu
7Fri12:487.31:256.47:370.37:361.05:128:25Full Moon7Fri
8Sat1:287.42:066.58:160.28:150.95:128:24Full Moon8Sat
9Sun2:077.42:456.58:530.18:520.95:138:24Full Moon9Sun
10Mon2:457.43:236.69:290.19:300.95:148:23Full Moon10Mon
11Tue3:217.43:596.710:040.010:080.85:158:23Waning Gibbous11Tue
12Wed3:577.44:356.710:390.010:470.85:158:22Waning Gibbous12Wed
13Thu4:367.45:136.811:170.011:300.75:168:22Waning Gibbous13Thu
14Fri5:177.35:547.011:580.05:178:21Waning Gibbous14Fri
15Sat6:037.26:397.112:170.612:430.05:188:21Third Quarter15Sat
16Sun6:557.17:287.31:080.51:310.15:198:20Third Quarter16Sun
17Mon7:507.08:217.52:030.42:230.15:208:19Third Quarter17Mon
18Tue8:506.99:197.73:020.33:190.25:218:18Waning Crescent18Tue
19Wed9:546.910:198.04:040.04:190.25:218:18Waning Crescent19Wed
20Thu10:597.011:198.25:08-0.35:210.15:228:17Waning Crescent20Thu
21Fri12:017.26:10-0.66:20-0.15:238:16Waning Crescent21Fri
22Sat12:188.51:007.47:07-0.97:17-0.35:248:15New Moon22Sat
23Sun1:148.71:567.68:03-1.18:13-0.45:258:14New Moon23Sun
24Mon2:108.72:507.78:56-1.29:08-0.45:268:13New Moon24Mon
25Tue3:048.73:437.79:48-1.110:02-0.35:278:12Waxing Crescent25Tue
26Wed3:568.44:337.710:38-0.910:55-0.25:288:11Waxing Crescent26Wed
27Thu4:488.15:247.611:28-0.611:490.15:298:10Waxing Crescent27Thu
28Fri5:407.76:157.412:18-0.25:308:09First Quarter28Fri
29Sat6:357.27:087.212:440.31:090.25:318:08First Quarter29Sat
30Sun7:306.88:007.01:410.62:000.55:328:07First Quarter30Sun
31Mon8:276.48:526.92:380.82:520.95:338:06First Quarter31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

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What time does the tide turn (slack tide) in Squamscott River, Great Bay, NH today?

Slack tide in Squamscott River, Great Bay, NH is approximately 10:25 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 48% 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 (48% 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