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Portsmouth Tide Chart

New Hampshire · NOAA station 8423745 (Portsmouth), 0.3 mipredicted

Low tide 6:39 AM, high tide 12:33 AM; tidal range 9.6 ft — big tides today.

Fishing window12:49 PM – 12:57 PM

Rule-of-thumb fishing window: 12:49 PM – 12:57 PM — the 2 hours before high tide, overlapping today's solunar major. Angler reference, not a guarantee.

Tidepool window5:09 AM – 8:09 AM

Tidepooling window: 5:09 AM – 8:09 AM — 90 minutes around low tide.

Today's Tides

Tomorrow: high 1:20 AM · low 7:21 AM · high 1:39 PM · low 7:46 PM

7-Day Tide Curve

12:30 AM5:36 AM12:13 PM6:13 PM12:33 AM6:39 AM12:57 PM7:01 PM1:19 AM7:20 AM1:39 PM7:45 PM2:04 AM8:02 AM2:20 PM8:31 PM2:49 AM8:43 AM3:01 PM9:17 PM3:35 AM9:26 AM3:44 PM10:06 PM4:24 AM10:13 AM4:35 PMFri 11Sat 12Sun 13Mon 14Tue 15Wed 16Thu 1710.3-1.7
7-day tide table (accessible data)
DayTypeTimeHeight (ft)
Fri 11High12:30 AM-0.57
Low5:36 AM-0.57
High12:13 PM8.75
Low6:13 PM-0.38
Sat 12High12:33 AM9.10
Low6:39 AM-0.46
High12:57 PM8.89
Low7:01 PM-0.43
Sun 13High1:19 AM8.84
Low7:20 AM-0.20
High1:39 PM8.86
Low7:45 PM-0.32
Mon 14High2:04 AM8.47
Low8:02 AM0.17
High2:20 PM8.70
Low8:31 PM-0.08
Tue 15High2:49 AM8.02
Low8:43 AM0.61
High3:01 PM8.42
Low9:17 PM0.26
Wed 16High3:35 AM7.55
Low9:26 AM1.05
High3:44 PM8.09
Low10:06 PM0.64
Thu 17High4:24 AM7.11
Low10:13 AM1.46
High4:35 PM7.76
1%
New Moon
05:51
First light
06:20
Sunrise
19:01
Sunset
19:29
Last light

FAQ

What time is high tide in Portsmouth today?

Today in Portsmouth, high tide times are 12:33 AM (9.10 ft) and 12:57 PM (8.89 ft), local time (America/New_York), based on NOAA station 8423745.

What time is low tide in Portsmouth today?

Today's low tides in Portsmouth: 6:39 AM (-0.46 ft) and 7:01 PM (-0.43 ft), local time, datum MLLW.

Is today good for fishing in Portsmouth?

Rule-of-thumb fishing window: 12:49 PM – 12:57 PM — the 2 hours before high tide, overlapping today's solunar major. Angler reference, not a guarantee. Today's solunar rating for Portsmouth is 5 out of 5, based on moon phase and tidal range.

Where is the tide measured for Portsmouth?

Tides for Portsmouth are predicted at NOAA CO-OPS station 8423745 (Portsmouth), 0.3 miles away — a subordinate station. Times are America/New_York, heights in feet relative to MLLW datum.

Tide predictions for Portsmouth come from NOAA CO-OPS station 8423745 (Portsmouth),0.3 mi away — a subordinate station — predictions are derived by time/height offsets from a nearby harmonic reference station. Heights are in feet relative to the MLLW datum; all times are local to the station (America/New_York). Source:NOAA Tides & Currents.

Data date: 2026-09-12 · page generated 2026-09-12 08:41 UTC · astronomical predictions, not observed water levels.