Surf Forecasts:
How big are the waves at Nantasket Beach today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 1ft (0.3m), 7s period with ESE swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 1ft (0.3m), 8s period with ESE swell.
- Evening surf: Evening surf (20 Aug, local time) - 1.5ft (0.4m), 7s period with ESE swell.
The current surf forecast for Nantasket Beach at 2AM is: 0.3m 6s primary swell from a East-southeast direction and 0.2m 8s secondary swell from a East-southeast direction (forecast issued at 07:00pm August 19). The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 1ft (0.3m) | 7s |
| Afternoon (20 Aug) | 1ft (0.3m) | 8s |
| Evening (20 Aug) | 1.5ft (0.4m) | 7s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 36mm), heaviest during Sat afternoon. Warm (max 28°C on Wed night, min 16°C on Sat afternoon). Winds increasing (calm on Thu morning, fresh winds from the ENE by Sat afternoon). | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 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) | ESE 6 | ESE 6 | SE 6 | ESE 6 | ESE 6 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | E 8 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 8 | 15 | 9 | 7 | 7 | 6 | 12 | 11 | 18 | 17 | 19 | 19 | 18 | 9 | 22 | 21 | 21 | 21 | 20 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | off | glassy | on | glassy | cross-off | off | off | cross-off | cross | cross-on | cross-on | on | cross-on | cross |
High Tide | 5:05PM2.78m | 5:44AM2.40m | 5:58PM2.69m | 6:41AM2.30m | 6:52PM2.64m | ||||||||||||||
Low Tide | 11:31PM0.33m | 11:40AM0.55m | 00:28AM0.41m | 12:35PM0.65m | |||||||||||||||
 |  |  | | | |  | |  |  | | | | | | | | | | |
 | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | 7:38 | — | — | — | — | — | — | — | 7:37 | — | — | — | — | — | — | — | 7:36 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 28 | 24 | 22 | 21 | 22 | 26 | 28 | 26 | 20 | 21 | 20 | 18 | 19 | 22 | 22 | 22 | 21 | 20 |
Feels °C | 28 | 27 | 23 | 22 | 22 | 22 | 27 | 28 | 27 | 17 | 20 | 18 | 16 | 17 | 20 | 19 | 19 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | ESE 6 | SE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | E 8 | E 7 | E 8 | E 8 | NNE 4 | E 8 | E 8 |
| kJ | 8 | 15 | 9 | 7 | 7 | 4 | 12 | 11 | 18 | 17 | 19 | 19 | 18 | 9 | 22 | 21 | 7 | 21 | 20 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | — | — | — | — | E 15 | E 9 | E 9 | E 9 | E 15 | E 14 | E 8 | NE 4 | NNE 4 |
| kJ | 6 | 1 | 5 | 7 | 6 | 6 | — | — | — | — | 5 | 2 | 2 | 6 | 4 | 4 | 21 | 4 | 1 |
Swell 3 Height (m) Direction Period (s) | ESE 8 | — | SE 4 | — | — | — | — | — | — | — | — | — | E 15 | E 15 | — | E 14 | E 14 | E 14 | E 14 |
| kJ | 7 | — | 1 | — | — | — | — | — | — | — | — | — | 4 | 4 | — | 4 | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | S 3 | S 3 | — | — | — | — | — | — | — | — | — | — | — | NNE 3 | NNE 4 | NNE 4 | — | — | — |
| kJ | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | 2 | 15 | 16 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 55 | 58 | 55 | 58 | 58 | 58 | 58 | 353 | 58 | 58 | 58 | 58 | 67 | 67 | 523 | 3478 | 653 | 523 | 58 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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