Surf Forecasts:
How big are the waves at Nantasket Beach today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 1ft (0.3m), 8s period with E swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 2.5ft (0.8m), 4s period with NE swell.
- Evening surf: Evening surf (21 Sep, local time) - 3ft (0.9m), 5s period with ENE swell.
The current surf forecast for Nantasket Beach at 5AM is: 0.3m 8s primary swell from a East direction and 0.3m 4s secondary swell from a East-southeast direction (forecast issued at 01:00am September 21). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 1ft (0.3m) | 8s |
| Afternoon (21 Sep) | 2.5ft (0.8m) | 4s |
| Evening (21 Sep) | 3ft (0.9m) | 5s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 16°C on Mon night, min 12°C on Tue morning). Winds increasing (light winds from the ENE on Mon night, fresh winds from the NE by Wed morning). | ||||||||||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | ||||||||||||||||||||||
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 | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 8 | E 8 | NE 4 | NE 5 | E 5 | ENE 5 | ENE 5 | E 5 | ENE 5 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 8 | E 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 12 | 12 | 12 | 26 | 30 | 16 | 28 | 27 | 28 | 44 | 100 | 128 | 186 | 170 | 132 | 121 | 92 | 113 | 155 | 255 | 327 | 405 | 473 | 461 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:57AM2.29m | 8:06PM2.61m | 8:51AM2.37m | 9:00PM2.69m | 9:38AM2.50m | 9:48PM2.79m | ||||||||||||||||||
Low Tide | 1:42AM0.50m | 1:49PM0.68m | 2:36AM0.45m | 2:44PM0.59m | 3:24AM0.35m | 3:33PM0.45m | ||||||||||||||||||
 | |  | |  | |  | |  | | |  | | | | | | | | | | |  | | |
 | — | 6:28 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:38 | — | — |
mm | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 13 | 13 | 14 | 15 | 15 | 16 | 16 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 14 | 13 | 13 | 12 | 12 | 13 |
Feels °C | 15 | 9 | 9 | 10 | 11 | 12 | 14 | 13 | 9 | 9 | 8 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 7 | 6 | 7 | 6 | 7 | 8 |
Swell 1 Height (m) Direction Period (s) | ESE 4 | ESE 4 | E 8 | E 8 | E 8 | E 5 | ENE 5 | ENE 5 | E 10 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | — | — | — | — | — | — | — | — |
| kJ | 5 | 3 | 12 | 11 | 5 | 12 | 28 | 27 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | — | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | ESE 4 | E 11 | E 10 | E 8 | E 10 | E 10 | — | — | — | — | — | — | — | E 14 | — | — | — | — | — | — | — | — |
| kJ | 12 | 12 | 1 | 2 | 2 | 5 | 2 | 2 | — | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 11 | E 11 | E 11 | — | — | E 10 | E 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 2 | 2 | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NNE 4 | NE 4 | NE 5 | NE 4 | — | — | E 5 | ENE 5 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 8 | E 8 |
| kJ | — | — | 10 | 26 | 30 | 16 | — | — | 28 | 44 | 100 | 128 | 186 | 170 | 132 | 121 | 92 | 113 | 155 | 255 | 327 | 405 | 473 | 461 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 108 | 523 | 523 | 523 | 523 | 531 | 531 | 653 | 523 | 118 | 653 | 523 | 660 | 558 | 987 | 890 | 1953 | 534 | 1842 | 655 | 950 | 2691 | 653 | 181 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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