New England
Gosport Harbor
Isles of Shoals · New Hampshire · NOAA station 8427031 · Tide predictions
42.9783, -70.6150
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48-hour outlook
Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
The next seven days
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H = high tide · L = low tide · highs & lows in local time
On the water nearby
Great Bay Buoy buoy · 14 mi NW · Station 44074
Wind & wave reports →
Nearby tide stations
- Jaffrey Point · 7.3 mi NW
- Gerrish Island · 7.4 mi NW
- Seapoint, Cutts Island · 7.7 mi N
- Fort Point · 8.1 mi NW
- Kittery Point · 8.4 mi NW
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 10.8 ft — Tue Jul 6 · 12:56 AM
Lowest predicted low tide: -1.7 ft — Sat Jan 23 · 5:36 PM
Biggest single-day swing: 12.4 ft on Sat Jan 23
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Sat Jan 23 | 5:36 PM | -1.7 ft |
| Sun Jan 24 | 6:25 PM | -1.6 ft |
| Fri Jan 22 | 4:45 PM | -1.5 ft |
| Sun Feb 21 | 5:16 PM | -1.5 ft |
| Tue Jul 6 | 7:19 AM | -1.4 ft |
| Sat Feb 20 | 4:28 PM | -1.4 ft |
| Mon Feb 22 | 6:02 PM | -1.3 ft |
| Wed Jul 7 | 8:11 AM | -1.3 ft |
| Thu Aug 5 | 7:48 AM | -1.3 ft |
| Thu Jan 21 | 3:51 PM | -1.2 ft |
194 minus tides (below 0 ft) are predicted here in 2027. The table shows up to the 10 lowest that fall between 7 AM and 7 PM — the ones worth planning a clam dig or tidepool walk around.
About this station
NOAA builds the predictions for Gosport Harbor, Isles of Shoals from the PORTLAND station: high tides about 0.93× the height, 2 min later; low tides about 0.93× the height, 2 min earlier.
Rocky shores and the country's biggest northern ranges: Eastport flirts with 20 ft, and the Gulf of Maine funnels weather as much as tide. Harbors here float — or sit in the mud — on the moon's schedule.