Surf Forecasts:
How big are the waves at Nantasket Beach today (20 Jul):
- Morning surf: Morning surf (20 Jul, local time) - 0.5ft (0.2m), 4s period with N swell.
- Afternoon surf: Afternoon surf (20 Jul, local time) - 0.5ft (0.1m), 12s period with E swell.
- Evening surf: Evening surf (20 Jul, local time) - 1.5ft (0.4m), 3s period with SSE swell.
The current surf forecast for Nantasket Beach at 4AM is: 0.3m 4s primary swell from a North-northeast direction and 0.1m 6s secondary swell from a Southeast direction (forecast issued at 07:00pm July 19). An open ocean swell of 0.2m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jul) | 0.5ft (0.2m) | 4s |
| Afternoon (20 Jul) | 0.5ft (0.1m) | 12s |
| Evening (20 Jul) | 1.5ft (0.4m) | 3s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Tue night. Warm (max 29°C on Wed afternoon, min 17°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | |||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | E 12 | E 12 | E 12 | E 12 | NNE 4 | E 9 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | SE 4 | SE 4 | SE 5 | SE 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 3 | 3 | 3 | 3 | 3 | 1 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 8 | 14 | 23 | 92 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | off | cross-off | on | cross-on | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross |
High Tide | 4:05PM2.96m | 4:26AM2.83m | 4:57PM2.90m | 5:24AM2.64m | 5:49PM2.83m | ||||||||||||||
Low Tide | 10:14PM0.15m | 10:38AM0.12m | 11:13PM0.23m | 11:30AM0.29m | |||||||||||||||
 | |  | | | | | | | | | |  |  |  | | |  |  | |
 | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — |
 | — | 8:15 | — | — | — | — | — | — | — | 8:15 | — | — | — | — | — | — | — | 8:14 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 |
Temp °C | 25 | 24 | 20 | 18 | 17 | 19 | 24 | 25 | 25 | 23 | 19 | 18 | 18 | 20 | 24 | 25 | 24 | 22 | 22 |
Feels °C | 21 | 21 | 17 | 15 | 14 | 16 | 22 | 22 | 21 | 19 | 16 | 16 | 17 | 19 | 20 | 21 | 22 | 21 | 23 |
Swell 1 Height (m) Direction Period (s) | N 4 | N 4 | SE 6 | N 4 | NNE 4 | N 4 | — | E 12 | E 12 | E 8 | E 8 | E 8 | E 12 | E 12 | E 12 | E 12 | E 11 | E 11 | ESE 6 |
| kJ | 2 | 1 | 2 | 2 | 3 | 1 | — | 3 | 3 | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 2 | 2 | 49 |
Swell 2 Height (m) Direction Period (s) | SE 6 | SE 6 | E 12 | SE 6 | SE 6 | E 6 | E 6 | SE 6 | E 8 | E 12 | E 12 | E 12 | E 8 | E 7 | E 8 | — | — | — | E 11 |
| kJ | 2 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 1 | 1 | 1 | — | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | E 12 | E 12 | E 8 | E 12 | E 8 | E 9 | E 12 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 3 | 1 | 3 | 1 | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | N 3 | WNW 3 | — | — | — | — | SE 2 | SSE 3 | SSE 3 | SSE 3 | SSE 3 | SSE 3 | SE 2 | SE 4 | SE 4 | SE 5 | SE 6 |
| kJ | — | — | 1 | 1 | — | — | — | — | 1 | 4 | 2 | 1 | 1 | 1 | 1 | 8 | 14 | 23 | 92 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 113 | 113 | 113 | 117 | 113 | 113 | 113 | 160 | 558 | 558 | 113 | 72 | 108 | 1230 | 1230 | 1230 | 1230 | 332 | 587 |
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