Nearby Harbors
43.0783’ N, 70.7517’ W

Portsmouth, NH

48°
H -°
L 41°
WSW
5mph
Low tide
10:34 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Sunday, November 1, 2026
The tide is currently falling in Portsmouth, NH.
Next low tide : in 2h 09m at 10:34 pm (0.0 ft)
Next high tide (tomorrow) : 5:02 am (7.6 ft)
Sunset today : 4:35 pm
Sunrise tomorrow : 6:17 am
Moon phase : Third Quarter (52% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

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Portsmouth, NH Tides - Apr 1826

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:288.17:157.512:030.912:510.35:296:12Waning Crescent1Sat
2Sun7:358.08:157.71:140.91:540.35:276:13Waning Crescent2Sun
3Mon8:358.09:077.92:170.72:480.35:256:14Waning Crescent3Mon
4Tue9:278.19:528.23:110.43:350.25:246:16Waning Crescent4Tue
5Wed10:138.110:328.33:570.24:160.25:226:17New Moon5Wed
6Thu10:558.111:098.44:390.04:530.35:206:18New Moon6Thu
7Fri11:348.011:448.45:18-0.15:280.45:186:19New Moon7Fri
8Sat12:117.95:54-0.16:010.55:176:20New Moon8Sat
9Sun12:178.412:467.86:280.06:340.75:156:21Waxing Crescent9Sun
10Mon12:508.31:227.67:030.17:080.95:136:23Waxing Crescent10Mon
11Tue1:248.21:597.47:390.37:451.15:116:24Waxing Crescent11Tue
12Wed2:018.02:397.28:180.48:261.25:106:25Waxing Crescent12Wed
13Thu2:427.93:247.09:020.69:121.45:086:26First Quarter13Thu
14Fri3:297.74:146.99:500.710:031.45:066:27First Quarter14Fri
15Sat4:217.75:077.010:420.810:581.45:056:28First Quarter15Sat
16Sun5:187.76:037.211:370.711:581.25:036:29First Quarter16Sun
17Mon6:197.87:007.612:340.55:016:31Waxing Gibbous17Mon
18Tue7:208.07:558.21:000.81:310.25:006:32Waxing Gibbous18Tue
19Wed8:198.48:478.82:000.22:25-0.24:586:33Waxing Gibbous19Wed
20Thu9:158.79:369.42:56-0.53:16-0.54:576:34Waxing Gibbous20Thu
21Fri10:089.010:269.93:48-1.14:06-0.84:556:35Full Moon21Fri
22Sat11:019.211:1610.24:40-1.54:56-0.94:546:36Full Moon22Sat
23Sun11:549.25:32-1.85:47-0.94:526:38Full Moon23Sun
24Mon12:0710.212:479.16:25-1.86:39-0.74:506:39Waning Gibbous24Mon
25Tue12:5910.11:418.87:18-1.57:33-0.44:496:40Waning Gibbous25Tue
26Wed1:539.72:398.58:14-1.18:300.04:476:41Waning Gibbous26Wed
27Thu2:519.23:408.29:13-0.79:320.54:466:42Third Quarter27Thu
28Fri3:548.74:437.910:15-0.210:370.84:446:43Third Quarter28Fri
29Sat4:598.35:467.811:180.211:440.94:436:44Third Quarter29Sat
30Sun6:047.96:477.812:210.44:426:46Third Quarter30Sun
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 52% 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 (52% 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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