Nearby Harbors
43.0783’ N, 70.7517’ W

Portsmouth, NH

45°
H -°
L 41°
WSW
6mph
High tide
5:02 am
Photo Credits

Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Monday, November 2, 2026
The tide is currently rising in Portsmouth, NH.
Next low tide : 10:53 am (1.0 ft)
Next high tide : in 2h 59m at 5:02 am (7.6 ft)
Sunset today : 4:33 pm
Sunrise tomorrow : 6:19 am
Moon phase : Third Quarter (41% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

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Portsmouth, NH Tides - Oct 1825

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:297.51:348.17:181.07:490.65:445:29Waning Gibbous1Sat
2Sun2:087.32:138.07:561.28:310.75:455:27Waning Gibbous2Sun
3Mon2:517.12:587.98:401.49:190.85:465:25Third Quarter3Mon
4Tue3:396.93:497.89:291.510:120.95:475:23Third Quarter4Tue
5Wed4:346.94:467.810:241.511:080.85:485:22Third Quarter5Wed
6Thu5:317.05:468.011:231.35:495:20Third Quarter6Thu
7Fri6:317.46:498.212:070.712:251.05:515:18Waning Crescent7Fri
8Sat7:297.97:508.61:060.31:280.55:525:16Waning Crescent8Sat
9Sun8:238.58:478.92:02-0.12:26-0.25:535:15Waning Crescent9Sun
10Mon9:149.19:419.22:54-0.53:21-0.85:545:13New Moon10Mon
11Tue10:039.710:349.43:44-0.84:14-1.35:555:11New Moon11Tue
12Wed10:5210.011:269.44:33-1.05:06-1.65:565:10New Moon12Wed
13Thu11:4210.25:23-0.95:58-1.75:585:08Waxing Crescent13Thu
14Fri12:199.312:3310.16:14-0.86:51-1.55:595:06Waxing Crescent14Fri
15Sat1:139.01:269.87:05-0.47:45-1.16:005:05Waxing Crescent15Sat
16Sun2:088.62:219.38:000.08:43-0.66:015:03Waxing Crescent16Sun
17Mon3:088.13:228.88:590.59:45-0.16:025:01First Quarter17Mon
18Tue4:117.84:278.410:020.810:490.36:045:00First Quarter18Tue
19Wed5:157.65:328.111:091.111:530.56:054:58First Quarter19Wed
20Thu6:177.56:367.812:151.26:064:57First Quarter20Thu
21Fri7:167.67:367.812:540.71:191.16:074:55Waxing Gibbous21Fri
22Sat8:097.88:307.81:500.72:150.96:094:53Waxing Gibbous22Sat
23Sun8:558.09:177.82:380.73:030.66:104:52Waxing Gibbous23Sun
24Mon9:358.210:007.83:190.73:460.46:114:50Waxing Gibbous24Mon
25Tue10:138.310:407.83:570.74:240.36:124:49Full Moon25Tue
26Wed10:488.411:187.84:320.85:010.26:144:48Full Moon26Wed
27Thu11:228.411:547.75:050.85:350.16:154:46Full Moon27Thu
28Fri11:568.45:390.96:100.26:164:45Full Moon28Fri
29Sat12:307.612:308.36:131.06:460.26:174:43Waning Gibbous29Sat
30Sun1:067.41:058.36:501.17:240.36:194:42Waning Gibbous30Sun
31Mon1:447.31:458.27:291.28:060.46:204:40Waning Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8423745)

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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 neap phase. Tonight's moon is 41% 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 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 Third Quarter (41% illuminated). This places Portsmouth, 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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