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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 7 am Friday 22 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
12.8° C
(Which is 2.4°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 4PM is: 0.5m 4s primary swell from a Northeast direction and 0.1m 9s secondary swell from a East direction (forecast issued at 07:00am May 22). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 May) | 2.5ft (0.7m) | 4s |
| Afternoon (22 May) | 2ft (0.6m) | 4s |
| Evening (22 May) | 1.5ft (0.4m) | 4s |
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 28mm), heaviest during Sun afternoon. Very mild (max 14°C on Sat afternoon, min 8°C on Sun morning). Winds increasing (calm on Fri night, fresh winds from the ESE by Sun afternoon). | ||||||||||||||||||||||||
Friday 22 | Saturday 23 | Sunday 24 | Mon 25 | |||||||||||||||||||||
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 | 11 PM | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NE 4 | NE 4 | NE 4 | NE 4 | NE 4 | ENE 4 | E 13 | E 14 | E 14 | E 13 | E 14 | E 10 | E 13 | E 10 | E 13 | E 12 | E 12 | E 12 | E 18 | SE 4 | ESE 5 | ESE 6 | SE 7 | ESE 7 | |
21 | 22 | 19 | 16 | 10 | 7 | 4 | 4 | 4 | 4 | 4 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 6 | 17 | 78 | 136 | 279 | 121 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | on | cross-on | cross | cross-off | off | glassy | cross-on | on | on | on | on | cross-on | cross | cross-on | on | on | on | on | on | on | cross | |
High Tide | 4:12AM3.08m | 5:02PM2.77m | 5:18AM2.93m | 6:05PM2.76m | 6:23AM2.81m | 7:05PM2.79m | ||||||||||||||||||
Low Tide | 10:41AM-0.05m | 11:01PM0.30m | 11:43AM0.07m | 00:08AM0.34m | 12:43PM0.17m | 1:13AM0.33m | ||||||||||||||||||
 |  |  | | |  |  | | | | | | | | | | |  |  | | | |  | | |
 | 5:16 | — | — | — | — | — | — | — | 5:15 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | 5:13 |
 | — | — | — | — | — | 8:04 | — | — | — | — | — | — | — | 8:05 | — | — | — | — | — | — | — | 8:06 | — | 8:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 8 | 9 | 4 | 2 | 1 | — | |
Temp °C | 11 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 13 | 14 | 13 | 13 | 12 | 10 | 10 | 8 | 8 | 8 | 9 | 9 | 10 | 10 |
6 | 6 | 7 | 8 | 8 | 8 | 8 | 9 | 10 | 9 | 9 | 10 | 10 | 10 | 9 | 8 | 7 | 4 | 2 | 1 | 3 | 4 | 7 | 7 | |
Swell 1 Height (m) Direction Period (s) | SE 9 | E 9 | E 9 | E 9 | NE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | E 3 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 18 | E 12 | E 12 | ESE 7 | ESE 7 |
 kJ | 3 | 2 | 2 | 2 | 10 | 7 | 3 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 6 | 3 | 3 | 144 | 121 |
Swell 2 Height (m) Direction Period (s) | E 13 | E 11 | E 11 | E 11 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | NE 4 | — | — | — | E 13 | E 12 | E 12 | E 12 | — | — | E 18 | — | — | — |
| kJ | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | — | — | — | 3 | 3 | 3 | 3 | — | — | 6 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | E 11 | E 13 | E 13 | E 14 | E 14 | E 13 | E 14 | — | E 13 | — | — | — | — | — | E 18 | — | — | — | — | — |
| kJ | — | — | — | — | 2 | 3 | 4 | 4 | 4 | 4 | 4 | — | 3 | — | — | — | — | — | 6 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 4 | NE 4 | NE 4 | NE 4 | — | — | — | — | — | — | — | E 3 | — | E 3 | E 3 | ESE 3 | ESE 3 | ESE 4 | ESE 3 | SE 4 | ESE 5 | ESE 6 | SE 7 | — |
| kJ | 21 | 22 | 19 | 16 | — | — | — | — | — | — | — | 1 | — | 1 | 2 | 2 | 2 | 2 | 5 | 17 | 78 | 136 | 279 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 273 | 677 | 871 | 890 | 890 | 1946 | 890 | 1232 | 846 | 784 | 784 | 1230 | 725 | 725 | 784 | 742 | 471 | 400 | 399 | 273 | 225 | 190 | 90 | 17 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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