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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 pm Tuesday 31 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
4.5° 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 7PM is: 0.2m 10s primary swell from a East-southeast direction and 0.4m 4s secondary swell from a Northeast direction (forecast issued at 01:00pm March 31). An open ocean swell of 0.2m 5s is not directed at the surf break, a second open ocean swell of 0.2m 3s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Mar) | 0.5ft (0.1m) | 8s |
| Afternoon (31 Mar) | 0.5ft (0.1m) | 9s |
| Evening (31 Mar) | 0.5ft (0.2m) | 10s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 31 | Wednesday 01 | Thursday 02 | Friday 03 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 10 | 10 | 10 | 5 | 9 | 10 | 10 | 10 | 10 | 10 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3 | 3 | 9 | 9 | 9 | 9 | 14 | 9 | 25 | 25 | 15 | 14 | 32 | 51 | 66 | 90 | 135 | 150 | 155 | 127 | 117 | 115 | 130 | 113 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- on | on | glass | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | cross- on | cross |
High Tide / height (m) | 10:59AM 2.98 | 11:22PM 2.95 | 11:44AM 2.97 | 12:01AM 3.01 | 12:25PM 2.93 | 12:38AM 3.03 | ||||||||||||||||||
Low Tide / height (m) | 5:10PM -0.00 | 5:29AM -0.04 | 5:50PM 0.01 | 6:12AM -0.08 | 6:28PM 0.06 | 6:53AM -0.08 | ||||||||||||||||||
Tuesday 31 | Wednesday 01 | Thursday 02 | Friday 03 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:24 | - | - | - | - | - | - | - | 6:22 |
| Sunset | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:08 | - | - | - | - | - |
 |  | |  |  | | | |  | | |  | | | |  | | | | | | | | | |
Rain (mm) | 2 | - | 1 | - | 1 | - | - | - | - | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 19 | 7 | 5 | 9 | 13 | 14 | 15 | 20 | 17 | 5 | 4 | 4 | 2 | 1 | 0 | 0 | -1 | 0 | 0 | 0 | 1 | 1 | 2 |
| Feels °C (?) | 9 | 17 | 2 | 2 | 8 | 9 | 10 | 12 | 19 | 15 | 0 | -1 | -1 | -3 | -5 | -6 | -7 | -7 | -6 | -5 | -4 | -3 | -2 | -1 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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