| Point Forecast: 5NM SE Nantucket MA 41.22N 70.04W (Elev. 0 m) |
Last Update: 3:15 am EST Dec 15, 2025 |
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| Date | 12/15 | 12/16 | ||||||||||||||||||||||
| Hour (EST) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Surface Wind (km/h) | 45 | 42 | 42 | 42 | 42 | 40 | 40 | 39 | 37 | 37 | 35 | 35 | 34 | 34 | 34 | 34 | 34 | 32 | 32 | 29 | 27 | 26 | 24 | 24 |
| Wind Dir | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW |
| Gust | 63 | 61 | 61 | 61 | 69 | 66 | 63 | 63 | 61 | 60 | 58 | 55 | 55 | 53 | 53 | 53 | ||||||||
| Significant Wave Height (m) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 |
| Wave Direction (°) | ||||||||||||||||||||||||
| Swell Height (m) | ||||||||||||||||||||||||
| Swell Dir | ||||||||||||||||||||||||
| Swell Period (sec) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Swell 2 Period (sec) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Wind Wave Height (m) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 |
| Date | 12/17 | |||||||||||||||||||||||
| Hour (EST) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Surface Wind (km/h) | 23 | 23 | 23 | 23 | 23 | 23 | 21 | 21 | 21 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 21 | 23 | 24 | 26 | 27 | 29 | 32 |
| Wind Dir | WNW | W | W | WNW | WNW | W | W | W | W | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Significant Wave Height (m) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Wave Direction (°) | ||||||||||||||||||||||||
| Swell Height (m) | ||||||||||||||||||||||||
| Swell Dir | ||||||||||||||||||||||||
| Swell Period (sec) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 5 | 4 | 5 |
| Swell 2 Period (sec) | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 |
| Wind Wave Height (m) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |


