Surf Forecasts:
How big are the waves at Nantasket Beach today (19 Sep):
- Morning surf: Morning surf (19 Sep, local time) - 4.5ft (1.3m), 6s period with NE swell.
- Afternoon surf: Afternoon surf (19 Sep, local time) - 4ft (1.2m), 6s period with NE swell.
- Evening surf: Evening surf (19 Sep, local time) - 2ft (0.6m), 6s period with NE swell.
The current surf forecast for Nantasket Beach at 2AM is: 0.3m 7s primary swell from a East-southeast direction and 0.1m 12s secondary swell from a East direction, 0.6m 4s secondary swell from a North-northeast direction (forecast issued at 07:00pm September 18). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Sep) | 4.5ft (1.3m) | 6s |
| Afternoon (19 Sep) | 4ft (1.2m) | 6s |
| Evening (19 Sep) | 2ft (0.6m) | 6s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 16mm), heaviest on Sun afternoon. Warm (max 21°C on Fri night, min 12°C on Sun night). Mainly fresh winds. | |||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | |||||||||||||||||
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 | E 12 | NNE 4 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | ENE 5 | ESE 7 | ESE 7 | ENE 5 | E 11 | SE 4 | E 11 | ESE 9 | ESE 4 |
Wave Graph  | |||||||||||||||||||
 kJ | 9 | 9 | 11 | 11 | 99 | 136 | 106 | 106 | 49 | 32 | 18 | 10 | 10 | 5 | 9 | 7 | 9 | 15 | 20 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross | cross-on | cross-on | cross-on | on | on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | glassy |
High Tide | 5:15PM2.64m | 6:03AM2.28m | 6:12PM2.58m | 7:00AM2.26m | 7:09PM2.57m | ||||||||||||||
Low Tide | 11:47PM0.45m | 11:55AM0.70m | 00:44AM0.50m | 12:52PM0.72m | |||||||||||||||
 |  |  | |  | | | | | | | | |  | |  | |  | | |
 | — | — | — | — | 6:26 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — |
 | 6:47 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 4 | 3 |
Temp °C | 23 | 21 | 17 | 16 | 14 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 13 | 14 | 15 |
Feels °C | 22 | 17 | 13 | 13 | 10 | 8 | 9 | 10 | 9 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 10 | 12 | 16 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 12 | E 12 | E 12 | NE 6 | NE 6 | NE 6 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | ESE 7 | ESE 4 | E 9 | ESE 9 | E 4 |
| kJ | 9 | 9 | 9 | 11 | 3 | 3 | 3 | 83 | 49 | 32 | 18 | 10 | 10 | 5 | 5 | 3 | 6 | 15 | 13 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 12 | E 12 | E 12 | — | E 12 | E 12 | E 11 | ESE 7 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 11 | E 7 | ESE 7 | E 11 | E 8 |
| kJ | 3 | 3 | 3 | 3 | — | 11 | 11 | 3 | 10 | 11 | 11 | 10 | 10 | 5 | 9 | 4 | 5 | 2 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | E 12 | — | — | — | — | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 | NE 5 | E 9 | E 11 | — | E 11 |
| kJ | — | — | 11 | — | — | — | — | 10 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 6 | 9 | — | 2 |
Wind waves Height (m) Direction Period (s) | — | — | N 3 | NNE 4 | NE 6 | NE 6 | NE 6 | NE 6 | — | — | — | — | — | SE 3 | ESE 3 | SE 4 | ESE 4 | E 4 | ESE 4 |
| kJ | — | — | 3 | 11 | 99 | 136 | 106 | 106 | — | — | — | — | — | 1 | 2 | 7 | 5 | 7 | 20 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 181 | 181 | 531 | 531 | 17 | 32 | 32 | 32 | 1237 | 1237 | 58 | 58 | 961 | 961 | 890 | 81 | 961 | 336 | 295 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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