Surf Forecasts:
How big are the waves at Nantasket Beach today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 1ft (0.3m), 8s period with E swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 1ft (0.3m), 8s period with E swell.
- Evening surf: Evening surf (21 Aug, local time) - 1ft (0.3m), 8s period with E swell.
The current surf forecast for Nantasket Beach at 3AM is: 0.3m 8s primary swell from a East-southeast direction and 0.1m 9s secondary swell from a East direction, 0.5m 4s secondary swell from a North-northeast direction (forecast issued at 07:00pm August 20). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 1ft (0.3m) | 8s |
| Afternoon (21 Aug) | 1ft (0.3m) | 8s |
| Evening (21 Aug) | 1ft (0.3m) | 8s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 35mm), heaviest during Sun morning. Warm (max 21°C on Thu night, min 16°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | |||||||||||||||||
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 7 | ESE 7 | ESE 8 | ESE 8 | E 8 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 5 | E 5 | ENE 6 | E 6 | E 6 | E 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 18 | 17 | 19 | 11 | 10 | 9 | 22 | 12 | 12 | 12 | 11 | 11 | 12 | 28 | 69 | 94 | 64 | 39 | 39 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | on | on | cross-on | cross | cross-on | cross-on | cross-on | cross | cross-on | cross-on |
High Tide | 5:58PM2.69m | 6:41AM2.30m | 6:52PM2.64m | 7:41AM2.26m | 7:49PM2.62m | ||||||||||||||
Low Tide | 00:28AM0.41m | 12:35PM0.65m | 1:27AM0.45m | 1:31PM0.69m | |||||||||||||||
 |  | | | |  |  |  | |  |  | | | | | | | | | |
 | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | 7:37 | — | — | — | — | — | — | — | 7:36 | — | — | — | — | — | — | — | 7:34 | — | — |
mm | — | 1 | 2 | 5 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 1 |
Temp °C | 26 | 21 | 16 | 17 | 18 | 18 | 20 | 20 | 20 | 19 | 19 | 19 | 18 | 19 | 19 | 18 | 18 | 18 | 18 |
Feels °C | 26 | 20 | 13 | 17 | 18 | 17 | 18 | 17 | 18 | 19 | 20 | 19 | 17 | 17 | 17 | 16 | 18 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 8 | ESE 8 | E 8 | E 7 | E 8 | E 8 | ESE 4 | E 8 | E 8 | ESE 4 | E 8 | E 8 | E 8 | ENE 6 | E 6 | E 6 | E 6 |
| kJ | 18 | 17 | 19 | 11 | 10 | 9 | 22 | 12 | 5 | 12 | 11 | 4 | 11 | 10 | 6 | 94 | 64 | 39 | 39 |
Swell 2 Height (m) Direction Period (s) | — | ESE 2 | E 15 | E 9 | E 9 | E 9 | E 15 | E 14 | E 8 | ESE 4 | ESE 5 | E 8 | E 14 | E 13 | E 13 | E 13 | E 13 | NNE 4 | NNE 4 |
| kJ | — | 1 | 5 | 2 | 2 | 6 | 4 | 4 | 12 | 4 | 4 | 11 | 4 | 4 | 3 | 3 | 3 | 11 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | E 15 | E 15 | — | — | E 14 | E 14 | E 14 | E 14 | — | — | — | — | — | E 13 | E 13 |
| kJ | — | — | — | — | 4 | 4 | — | — | 4 | 4 | 4 | 4 | — | — | — | — | — | 3 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | N 3 | NNE 4 | NNE 4 | NE 3 | NE 3 | ENE 3 | NE 3 | NE 3 | NE 3 | NE 3 | E 4 | ENE 5 | E 5 | — | NNE 4 | — | — |
| kJ | — | — | 4 | 8 | 5 | 3 | 3 | 4 | 3 | 2 | 2 | 2 | 12 | 28 | 69 | — | 15 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 961 | 81 | 108 | 58 | 108 | 523 | 470 | 303 | 893 | 523 | 108 | 67 | 263 | 818 | 805 | 40 | 40 | 28 | 28 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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