Portsmouth Harbor
Past nights from AIS in Jul–Oct 2024 and Jun–Sept 2025
Where boats stayed: 43.074° N, 70.718° W
30nights
21boats
Nights by wind direction
| From | Nights | Boats | Wind 20 kt+ | Windiest night (area) |
|---|---|---|---|---|
| N | 1 | 1–2 | – | 5.8 ktgusts 9.1 kt |
| NE | 2 | 1–2 | – | 11 ktgusts 18.3 kt |
| E | 4 | 3 | – | 7.7 ktgusts 13.5 kt |
| SE | 1 | 1–2 | – | 6 ktgusts 9.1 kt |
| S | 8 | 8 | – | 12.3 ktgusts 19.7 kt |
| SW | 7 | 9 | – | 12.9 ktgusts 22.7 kt |
| W | 3 | 3 | – | 7.1 ktgusts 11.3 kt |
| NW | 4 | 3 | – | 8.8 ktgusts 14.2 kt |
Nearby anchorages
- Jones Cove6 nights
- Portsmouth Harbor, New Castle Island5 nights
- Anchorage off Seavey's Island6 nights
- Portsmouth Harbor, N.H., North of New - Castle Island1 night
- Portsmouth Harbor, Jamaica Island14 nights
- Little Harbor, New Castle Island3 nights
- Pepperrell Cove115 nights
- Portsmouth Harbor, Goat Island5 nights
AIS shows only boats that carry it and that a receiver hears, so no boats on AIS never means an anchorage is empty or unsuitable. Boats that live here (at their own berth or mooring, or a week or more in one place) are left out, and boats in marinas and at piers are counted apart from the anchorage's nights. Not for navigation.