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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 7 am Friday 15 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
10.4° C
(Which is slightly warmer than usual)How big are the waves at Nantasket Beach today?
The current surf forecast for Nantasket Beach at 10AM is: 1.2m 10s primary swell from a East direction and 0.7m 9s secondary swell from a East-southeast direction (forecast issued at 07:00am May 15). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 2.5ft (0.7m) | 9s |
| Afternoon (15 May) | 4.5ft (1.3m) | 10s |
| Evening (15 May) | 4.5ft (1.3m) | 10s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 28°C on Sun afternoon, min 9°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 7 | ESE 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | |
89 | 79 | 260 | 318 | 379 | 332 | 332 | 273 | 216 | 171 | 136 | 104 | 78 | 56 | 55 | 36 | 35 | 23 | 22 | 13 | 13 | 12 | 12 | 6 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross | cross-on | cross | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | off | cross | cross-on | |
High Tide | 10:31AM2.94m | 10:44PM3.36m | 11:22AM3.00m | 11:33PM3.47m | 12:14PM3.02m | 00:24AM3.51m | ||||||||||||||||||
Low Tide | 4:18AM-0.19m | 4:30PM0.02m | 5:09AM-0.35m | 5:19PM-0.03m | 6:00AM-0.45m | 6:10PM-0.04m | ||||||||||||||||||
 |  |  | | | | |  | |  | | | | | | | | | | | | | | | |
 | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | 5:18 |
 | — | — | — | — | 7:57 | — | — | — | — | — | — | — | 7:58 | — | — | — | — | — | — | — | 7:59 | — | — | 8:00 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 10 | 10 | 11 | 11 | 10 | 9 | 10 | 11 | 10 | 13 | 19 | 22 | 24 | 18 | 15 | 15 | 16 | 19 | 24 | 26 | 28 | 25 | 21 | 17 |
9 | 8 | 9 | 8 | 7 | 6 | 8 | 10 | 7 | 10 | 16 | 19 | 19 | 13 | 11 | 11 | 13 | 18 | 21 | 23 | 25 | 24 | 19 | 15 | |
Swell 1 Height (m) Direction Period (s) | E 7 | ENE 7 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
 kJ | 89 | 60 | 260 | 318 | 379 | 332 | 332 | 273 | 216 | 171 | 136 | 104 | 78 | 56 | 55 | 36 | 35 | 23 | 22 | 13 | 13 | 12 | 12 | 6 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | ESE 9 | — | S 9 | — | — | — | — | — | — | — | — | — | — | — | SSE 5 | — | E 8 | E 8 | E 8 | — | SE 4 | — | NE 4 |
| kJ | 8 | 79 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 3 | — | 13 | 12 | 12 | — | 1 | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | S 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 6 | S 4 | — | — | — | — | — | — |
| kJ | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 1 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | S 2 | S 4 | S 3 | SSW 3 | SW 3 | WSW 2 | — | — | — | WNW 2 | N 3 | N 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 9 | 2 | 3 | 1 | 1 | — | — | — | 1 | 1 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 7 | 0 | 0 | 0 | 17 | 17 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 69 | 26 | 26 | 58 | 55 | 55 | 67 | 58 | 100 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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