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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 6 pm Thursday 04 Dec 2025 ESTForecast 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
8.3° C
(Which is slightly cooler than normal)How big are the waves at Nantasket Beach today?
The current surf forecast for Nantasket Beach at 1AM is: 0.4m 6s primary swell from a North-northeast direction and 0.2m 11s secondary swell from a East direction (forecast issued at 06:00pm December 04). An open ocean swell of 0.9m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 Dec) | 0.5ft (0.2m) | 10s |
| Afternoon (05 Dec) | 0.5ft (0.2m) | 10s |
| Evening (05 Dec) | 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
Thursday 04 | Friday 05 | Saturday 06 | Sunday 07 | |||||||||||||||||||||
| 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 11 | 11 | 6 | 6 | 6 | 10 | 5 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 21 | 13 | 9 | 13 | 42 | 16 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | cross- off | cross- off | cross- off |
High Tide / height (m) | 10:31PM 2.96 | 10:42AM 3.54 | 11:25PM 2.96 | 11:35AM 3.52 | 12:20AM 2.93 | 12:30PM 3.43 | ||||||||||||||||||
Low Tide / height (m) | 4:18PM -0.49 | 4:26AM -0.12 | 5:11PM -0.53 | 5:19AM -0.10 | 6:05PM -0.50 | 6:14AM -0.05 | ||||||||||||||||||
Thursday 04 | Friday 05 | Saturday 06 | Sunday 07 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:58 | - | - |
| Sunset | 4:10 | - | - | - | - | - | - | - | 4:10 | - | - | - | - | - | - | - | 4:10 | - | - | - | - | - | - | - |
 |  | | | |  | | | |  | |  | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 2 | -4 | -9 | -11 | -11 | -10 | -8 | -4 | -3 | -3 | -3 | -2 | -1 | -1 | 1 | 3 | 3 | 2 | 2 | 1 | 1 | 0 | 1 | 2 |
| Feels °C (?) | -7 | -15 | -19 | -20 | -18 | -15 | -14 | -11 | -9 | -9 | -8 | -7 | -5 | -5 | -4 | -2 | -1 | -3 | -3 | -4 | -4 | -5 | -4 | -2 |
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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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