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Nantasket Beach Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Surf Forecasts:
Nantasket Beach surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 1 am Sunday 17 May 2026 EDTForecast update in hr min s Forecast update imminent
Nantasket Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nantasket Beach sea temperature is
10.6° C
(Which is slightly warmer than usual)How big are the waves at Nantasket Beach today?
The current surf forecast for Nantasket Beach at 8AM is: 0.4m 8s primary swell from a East-southeast direction (forecast issued at 01:00am May 17). The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 1.5ft (0.4m) | 8s |
| Afternoon (17 May) | 1ft (0.3m) | 8s |
| Evening (17 May) | 1ft (0.3m) | 8s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Warm (max 34°C on Tue afternoon, min 14°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | ||||||||||||||||||||||
2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
E 9 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | NE 4 | NE 4 | E 18 | E 18 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | |
36 | 22 | 23 | 22 | 13 | 13 | 12 | 12 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 8 | 8 | 8 | 8 | 7 | 9 | 9 | 8 | 8 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross | on | on | on | cross-on | on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | |
High Tide | 11:33PM3.47m | 12:14PM3.02m | 00:24AM3.51m | 1:08PM3.00m | 1:17AM3.48m | 2:03PM2.96m | ||||||||||||||||||
Low Tide | 6:00AM-0.45m | 6:10PM-0.04m | 6:53AM-0.47m | 7:03PM-0.02m | 7:47AM-0.42m | 7:58PM0.05m | ||||||||||||||||||
 |  |  | | | |  |  | | |  | | | | | | | | | | | | | | |
 | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:59 | — | — | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 8:00 | — |
— | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | — | — | — | — | — | — | |
Temp °C | 16 | 16 | 18 | 25 | 28 | 28 | 25 | 20 | 17 | 15 | 14 | 15 | 18 | 19 | 18 | 16 | 16 | 17 | 20 | 29 | 33 | 34 | 27 | 24 |
12 | 14 | 17 | 23 | 24 | 24 | 23 | 19 | 15 | 12 | 10 | 10 | 13 | 15 | 15 | 15 | 15 | 16 | 20 | 27 | 30 | 31 | 26 | 22 | |
Swell 1 Height (m) Direction Period (s) | E 9 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | NE 4 | NE 4 | NE 4 | NE 4 | NE 4 | SE 4 | SE 4 | ESE 4 | ESE 4 | ESE 9 | ESE 10 | ESE 10 | ESE 9 | SSE 4 |
 kJ | 36 | 22 | 23 | 22 | 13 | 13 | 12 | 12 | 6 | 6 | 3 | 4 | 3 | 3 | 2 | 3 | 3 | 1 | 1 | 7 | 9 | 9 | 8 | 2 |
Swell 2 Height (m) Direction Period (s) | SE 5 | SE 5 | — | E 8 | E 8 | E 8 | SSE 4 | SSE 5 | — | — | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 4 | SE 4 | — | E 16 | ESE 9 |
| kJ | 1 | 1 | — | 12 | 5 | 5 | 2 | 2 | — | — | 6 | 6 | 6 | 6 | 6 | 8 | 8 | 8 | 8 | 1 | 1 | — | 5 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SE 5 | — | — | — | — | — | E 18 | E 18 | E 13 | NE 4 | NE 4 | — | E 13 | E 13 | — | SE 4 | — | E 16 |
| kJ | — | — | — | — | — | — | 1 | — | — | — | — | — | 6 | 6 | 3 | 1 | 1 | — | 3 | 3 | — | 1 | — | 5 |
Wind waves Height (m) Direction Period (s) | SSW 3 | SW 3 | — | — | — | NW 2 | NW 3 | — | NNE 3 | NE 4 | ESE 3 | ESE 3 | ESE 3 | SE 3 | SE 3 | — | — | — | — | — | — | SW 2 | S 3 | SW 3 |
| kJ | 3 | 1 | — | — | — | 2 | 1 | — | 1 | 2 | 1 | 1 | 1 | 2 | 3 | — | — | — | — | — | — | 1 | 5 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 26 | 55 | 31 | 55 | 55 | 69 | 58 | 91 | 90 | 97 | 273 | 276 | 523 | 523 | 523 | 523 | 529 | 108 | 108 | 336 | 1232 | 108 | 55 | 331 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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