- 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 1 pm Thursday 30 Apr 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
8.8° C
(Which is 1.5°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 9PM is: 1.2m 10s primary swell from a East direction (forecast issued at 01:00pm April 30). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Apr) | 4.5ft (1.4m) | 10s |
| Afternoon (30 Apr) | 4.5ft (1.3m) | 10s |
| Evening (30 Apr) | 4ft (1.2m) | 10s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 19mm), heaviest on Sat night. Very mild (max 15°C on Fri afternoon, min 7°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 30 | Friday 1 | Saturday 2 | Sun 3 | |||||||||||||||||||||
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 | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
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 9 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | |
377 | 318 | 312 | 266 | 260 | 260 | 205 | 166 | 162 | 155 | 126 | 123 | 120 | 117 | 91 | 91 | 91 | 93 | 95 | 97 | 125 | 97 | 97 | 71 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | cross-off | glassy | off | off | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | glassy | cross | cross-off | |
High Tide | 11:24AM2.79m | 11:32PM3.01m | 12:05PM2.75m | 00:08AM3.01m | 12:44PM2.71m | 00:45AM2.99m | ||||||||||||||||||
Low Tide | 5:21PM0.24m | 5:52AM-0.02m | 5:59PM0.29m | 6:31AM-0.01m | 6:36PM0.34m | 7:09AM0.02m | ||||||||||||||||||
 | |  |  |  | | |  | |  | | |  | | | | | | |  | | | | | |
 | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:35 | — |
 | — | — | 7:40 | — | — | — | — | — | — | — | 7:42 | — | — | — | — | — | — | — | 7:43 | — | — | — | — | 7:44 |
1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 2 | 5 | 5 | |
Temp °C | 8 | 10 | 10 | 10 | 9 | 8 | 7 | 8 | 12 | 15 | 15 | 13 | 12 | 11 | 10 | 10 | 11 | 14 | 13 | 11 | 9 | 8 | 8 | 7 |
6 | 9 | 8 | 9 | 7 | 5 | 3 | 4 | 7 | 11 | 12 | 9 | 8 | 7 | 7 | 7 | 8 | 11 | 10 | 8 | 7 | 6 | 4 | 2 | |
Swell 1 Height (m) Direction Period (s) | 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 9 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 |
 kJ | 377 | 318 | 312 | 266 | 260 | 260 | 205 | 166 | 162 | 155 | 126 | 123 | 120 | 117 | 91 | 91 | 91 | 93 | 95 | 97 | 125 | 97 | 97 | 71 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 2 | NNW 2 | N 3 | — | SE 3 | — | — | — | — | — | — | S 3 | SSE 4 | S 4 | S 4 | — | — |
| kJ | — | — | — | — | — | — | — | 1 | 1 | 1 | — | 2 | — | — | — | — | — | — | 1 | 3 | 12 | 2 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 0 | 17 | 28 |
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