Nearby Harbors
43.0783’ N, 70.7517’ W

Portsmouth, NH

49°
H 76°
L 54°
WSW
1mph
Low tide
1:14 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Wednesday, November 4, 2026
The tide is currently falling in Portsmouth, NH.
Next low tide : in 5h 48m at 1:14 pm (0.7 ft)
Next high tide : 7:34 pm (8.1 ft)
Sunset today : 4:31 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waning Crescent (21% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

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Portsmouth, NH Tides - Aug 1822

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:257.110:268.44:090.54:041.34:367:09Full Moon1Thu
2Fri11:057.311:068.64:470.34:441.04:377:08Full Moon2Fri
3Sat11:427.611:448.75:230.15:240.84:387:06Full Moon3Sat
4Sun12:187.85:59-0.16:040.64:397:05Full Moon4Sun
5Mon12:238.812:548.16:34-0.26:460.34:407:04Waning Gibbous5Mon
6Tue1:028.71:318.47:11-0.37:290.24:427:03Waning Gibbous6Tue
7Wed1:448.62:118.67:51-0.28:160.14:437:01Waning Gibbous7Wed
8Thu2:318.32:568.78:350.09:080.14:447:00Third Quarter8Thu
9Fri3:228.03:468.89:230.210:030.14:456:59Third Quarter9Fri
10Sat4:197.74:428.710:170.411:040.24:466:57Third Quarter10Sat
11Sun5:217.45:428.711:150.74:476:56Third Quarter11Sun
12Mon6:297.36:498.712:100.212:190.84:486:54Waning Crescent12Mon
13Tue7:407.37:568.91:200.11:270.84:496:53Waning Crescent13Tue
14Wed8:457.58:599.12:26-0.12:330.64:506:52Waning Crescent14Wed
15Thu9:437.89:579.33:25-0.43:320.34:516:50New Moon15Thu
16Fri10:378.110:509.34:19-0.64:270.14:526:49New Moon16Fri
17Sat11:268.411:409.35:08-0.75:19-0.14:546:47New Moon17Sat
18Sun12:128.55:54-0.66:08-0.14:556:46New Moon18Sun
19Mon12:289.012:568.66:37-0.46:550.04:566:44Waxing Crescent19Mon
20Tue1:138.71:378.57:18-0.17:410.24:576:42Waxing Crescent20Tue
21Wed1:588.22:198.37:590.38:270.44:586:41Waxing Crescent21Wed
22Thu2:447.73:038.18:410.89:160.74:596:39First Quarter22Thu
23Fri3:347.33:497.89:261.210:081.05:006:38First Quarter23Fri
24Sat4:266.94:407.610:141.611:031.35:016:36First Quarter24Sat
25Sun5:226.65:357.411:071.85:026:34First Quarter25Sun
26Mon6:226.46:337.412:021.412:042.05:046:33First Quarter26Mon
27Tue7:226.47:317.61:041.41:041.95:056:31Waxing Gibbous27Tue
28Wed8:176.68:247.82:011.22:001.75:066:29Waxing Gibbous28Wed
29Thu9:056.99:118.12:500.92:491.45:076:28Waxing Gibbous29Thu
30Fri9:487.39:548.43:310.63:331.05:086:26Full Moon30Fri
31Sat10:277.710:358.74:090.24:150.65:096:24Full Moon31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8423745)

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
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Common Questions About Portsmouth, NH Tides

Collapse All
Is this week a spring tide or neap tide in Portsmouth, NH?

Portsmouth, NH is currently in a transitional phase. Tonight's moon is 21% 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 shifting between spring and neap.

What datum are Portsmouth, 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 Portsmouth, NH?

Tide predictions for Portsmouth, 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 Portsmouth, NH?

Tide data for Portsmouth, NH is sourced from NOAA Station #8423745. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8423745.

What is the moon phase in Portsmouth, NH tonight?

Tonight the moon over Portsmouth, NH is Waning Crescent (21% illuminated). This places Portsmouth, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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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