| Point Forecast: 18NM NNE Portsmouth NH 43.31N 70.57W (Elev. 10 ft) |
Last Update: 6:32 pm EDT Aug 16, 2026 |
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| Date | 08/16 | 08/17 | ||||||||||||||||||||||
| Hour (EDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Surface Wind (mph) | 7 | 7 | 5 | 3 | 3 | 4 | 4 | 4 | 5 | 4 | 5 | 4 | 5 | 5 | 5 | 5 | 7 | 6 | 6 | 5 | 5 | 6 | 5 | 4 |
| Wind Dir | SSE | SSE | SSE | SSE | S | SSW | SSW | S | SSW | SSW | SSW | SSW | S | S | SSW | SSW | SSW | S | S | S | S | SSE | SE | SE |
| Gust | ||||||||||||||||||||||||
| Significant Wave Height (ft) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wave Period (sec) | 11 | 11 | 11 | 11 | 11 | 11 | 6 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Wave Direction (°) | ||||||||||||||||||||||||
| Date | 08/18 | |||||||||||||||||||||||
| Hour (EDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Surface Wind (mph) | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 3 |
| Wind Dir | SSE | SSE | SSE | SSE | ESE | E | E | NE | NNE | NNE | NNE | NNE | NNE | NNE | NNE | NNE | NNE | NNE | NE | ENE | ENE | E | E | E |
| Gust | ||||||||||||||||||||||||
| Significant Wave Height (ft) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wave Period (sec) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Wave Direction (°) | ||||||||||||||||||||||||


