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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 Saturday 21 Mar 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
3.6° C
(Which is normal for this time of year)How big are the waves at Nantasket Beach today?
The current surf forecast for Nantasket Beach at 6AM is: 0.7m 8s primary swell from a East-southeast direction (forecast issued at 01:00am March 21). An open ocean swell of 0.2m 4s is not directed at the surf break, a second open ocean swell of 0.2m 4s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 2ft (0.6m) | 8s |
| Afternoon (21 Mar) | 1.5ft (0.5m) | 8s |
| Evening (21 Mar) | 1.5ft (0.5m) | 8s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| 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 | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 4 | 5 | 6 | 6 | 7 | 4 | 5 | 6 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 39 | 78 | 70 | 72 | 49 | 49 | 31 | 31 | 29 | 18 | 10 | 9 | 9 | 16 | 30 | 35 | 23 | 15 | 23 | 80 | 182 | 240 | 452 | 268 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- off | cross- off | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on |
High Tide / height (m) | 1:13AM 3.23 | 1:42PM 3.07 | 1:58AM 3.27 | 2:31PM 2.97 | 2:45AM 3.24 | 3:22PM 2.83 | ||||||||||||||||||
Low Tide / height (m) | 7:29AM -0.34 | 7:45PM -0.14 | 8:17AM -0.33 | 8:32PM -0.05 | 9:08AM -0.25 | |||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:41 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:55 | - | - | - | - | - | - | - | 6:57 | - | - | - | - | - | - | - | 6:58 | - |
 | |  |  |  | | | | | | |  |  | | | |  | | | | | | |  | |
Rain (mm) | 4 | 1 | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 3 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 7 | 7 | 6 | 6 | 6 | 8 | 7 | 6 | 4 | 3 | 3 | 3 | 5 | 7 | 8 | 4 | 2 | 2 | 1 | 0 | 0 | 1 | 2 | 1 |
| Feels °C (?) | 1 | 3 | 3 | 2 | 2 | 3 | 3 | 3 | 0 | 0 | -1 | -2 | 0 | 3 | 6 | -1 | -5 | -5 | -7 | -8 | -8 | -7 | -4 | -4 |
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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
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