- Forecast
- Maps
- Live
- Weather State
- Spot Information
Nantasket Beach Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Surf Forecasts:
Nantasket Beach surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 7 pm Tuesday 12 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
10.0° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Nantasket Beach today?
The current surf forecast for Nantasket Beach at 4AM is: 0.3m 7s primary swell from a East-southeast direction and 0.3m 7s secondary swell from a East direction (forecast issued at 07:00pm May 12). The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 1ft (0.3m) | 7s |
| Afternoon (13 May) | 2ft (0.6m) | 4s |
| Evening (13 May) | 2ft (0.6m) | 5s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Thu afternoon. Very mild (max 16°C on Wed afternoon, min 8°C on Tue night). Winds decreasing (fresh winds from the SSW on Wed afternoon, light winds from the SE by Thu night). | ||||||||||||||||||||||||
Tue 12 | Wednesday 13 | Thursday 14 | Fri 15 | |||||||||||||||||||||
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 | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 8 | E 7 | E 7 | E 7 | ESE 7 | ESE 7 | ESE 7 | E 10 | SSE 4 | SSE 4 | SSE 5 | SSE 5 | SE 5 | SE 5 | ESE 5 | ESE 5 | ESE 6 | E 6 | E 7 | E 7 | E 7 | ESE 9 | E 10 | E 10 | |
29 | 27 | 15 | 9 | 9 | 10 | 10 | 8 | 17 | 21 | 13 | 9 | 7 | 18 | 33 | 39 | 56 | 100 | 107 | 94 | 73 | 118 | 312 | 327 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 8:19PM2.81m | 8:45AM2.76m | 9:08PM3.00m | 9:39AM2.85m | 9:56PM3.20m | 10:31AM2.94m | ||||||||||||||||||
Low Tide | 2:01PM0.27m | 2:33AM0.22m | 2:52PM0.19m | 3:27AM0.01m | 3:41PM0.09m | 4:18AM-0.19m | ||||||||||||||||||
 |  | |  | | | | | | | | | | |  | |  |  |  | | | | | | |
 | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — |
 | 7:53 | — | — | — | — | — | — | — | 7:54 | — | — | — | — | — | — | — | 7:55 | — | — | — | — | — | — | 7:57 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 10 | 6 | — | — | — | — | — | — | |
Temp °C | 14 | 13 | 12 | 10 | 8 | 10 | 12 | 16 | 16 | 14 | 14 | 14 | 13 | 14 | 14 | 12 | 12 | 12 | 12 | 11 | 10 | 10 | 9 | 9 |
11 | 10 | 9 | 7 | 4 | 7 | 8 | 10 | 10 | 8 | 10 | 10 | 10 | 11 | 11 | 9 | 11 | 11 | 11 | 10 | 8 | 7 | 5 | 4 | |
Swell 1 Height (m) Direction Period (s) | E 8 | E 7 | E 7 | E 7 | E 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 10 | E 10 | ESE 6 | E 6 | E 7 | E 7 | E 7 | E 6 | E 10 | E 10 |
 kJ | 29 | 27 | 15 | 9 | 7 | 10 | 10 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 2 | 56 | 100 | 107 | 94 | 73 | 68 | 312 | 327 |
Swell 2 Height (m) Direction Period (s) | NE 4 | NNE 4 | SE 4 | ESE 7 | ESE 7 | E 7 | E 7 | E 7 | E 7 | ESE 6 | SE 6 | E 10 | E 10 | E 10 | — | E 10 | E 10 | E 11 | — | SE 7 | E 9 | ESE 9 | S 10 | — |
| kJ | 3 | 2 | 2 | 9 | 9 | 4 | 4 | 4 | 4 | 4 | 2 | 2 | 2 | 2 | — | 8 | 2 | 2 | — | 64 | 42 | 118 | 2 | — |
Swell 3 Height (m) Direction Period (s) | E 11 | ESE 3 | NE 4 | SSE 4 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 6 | E 13 | — | — | — | — | — | — | S 9 | — | — | — | — |
| kJ | 10 | 1 | 1 | 1 | 8 | 8 | 8 | 8 | 8 | 8 | 2 | 1 | 3 | — | — | — | — | — | — | 2 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 3 | — | WSW 2 | — | — | — | S 3 | SSE 4 | SSE 4 | SSE 5 | SSE 5 | SE 5 | SE 5 | ESE 5 | ESE 5 | — | — | — | — | — | — | — | — |
| kJ | — | 5 | — | 1 | — | — | — | 5 | 17 | 21 | 13 | 9 | 7 | 18 | 33 | 39 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 55 | 12 | 67 | 58 | 58 | 1232 | 1232 | 1232 | 961 | 399 | 529 | 359 | 383 | 340 | 113 | 7 | 26 | 26 | 7 | 32 | 32 | 32 | 32 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Nantasket Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest