Surf Forecasts:
How big are the waves at Nantasket Beach today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 1.5ft (0.4m), 7s period with E swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 1ft (0.3m), 7s period with ESE swell.
- Evening surf: Evening surf (18 Sep, local time) - 1ft (0.3m), 7s period with ESE swell.
The current surf forecast for Nantasket Beach at 6AM is: 0.3m 7s primary swell from a East direction and 0.2m 6s secondary swell from a East direction (forecast issued at 01:00am September 18). An open ocean swell of 0.2m 2s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 1.5ft (0.4m) | 7s |
| Afternoon (18 Sep) | 1ft (0.3m) | 7s |
| Evening (18 Sep) | 1ft (0.3m) | 7s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 15mm), heaviest on Sun night. Warm (max 25°C on Fri afternoon, min 12°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||||||||||
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 7 | E 7 | E 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 12 | NE 4 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | ENE 5 | ENE 5 | NE 5 | ENE 5 | E 11 | E 7 | E 9 | E 9 | E 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 14 | 9 | 15 | 16 | 15 | 9 | 9 | 11 | 20 | 151 | 136 | 84 | 69 | 40 | 24 | 18 | 11 | 7 | 5 | 9 | 4 | 6 | 14 | 12 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-off | cross-off | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross | cross-off | cross-off | cross | cross | cross-off | cross-on | on | cross-on |
High Tide | 5:06AM2.36m | 5:15PM2.64m | 6:03AM2.28m | 6:12PM2.58m | 7:00AM2.26m | 7:09PM2.57m | ||||||||||||||||||
Low Tide | 10:59AM0.64m | 11:47PM0.45m | 11:55AM0.70m | 00:44AM0.50m | 12:52PM0.72m | |||||||||||||||||||
 | |  |  |  | |  | |  | | | | | | | | | | | | |  | | | |
 | — | 6:26 | — | — | — | — | — | — | — | 6:26 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:47 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 2 |
Temp °C | 20 | 19 | 18 | 22 | 25 | 24 | 21 | 17 | 15 | 13 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 15 | 16 | 13 | 13 | 14 |
Feels °C | 21 | 20 | 19 | 23 | 23 | 23 | 16 | 12 | 11 | 8 | 7 | 8 | 9 | 9 | 9 | 10 | 11 | 10 | 10 | 12 | 14 | 12 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 7 | E 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 12 | E 12 | ESE 8 | NE 6 | NE 6 | NE 6 | ENE 5 | ENE 5 | NE 5 | ENE 5 | E 5 | E 7 | ESE 4 | ESE 4 | E 8 |
| kJ | 14 | 9 | 15 | 16 | 15 | 9 | 9 | 9 | 11 | 3 | 3 | 11 | 69 | 40 | 24 | 18 | 11 | 7 | 5 | 4 | 4 | 3 | 3 | 12 |
Swell 2 Height (m) Direction Period (s) | SE 4 | E 6 | SE 4 | E 12 | — | — | E 12 | E 12 | E 12 | — | E 12 | E 12 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 8 | E 9 | E 9 | E 9 | ESE 4 |
| kJ | 2 | 3 | 1 | 3 | — | — | 3 | 3 | 3 | — | 11 | 3 | 11 | 10 | 10 | 11 | 5 | 5 | 5 | 5 | 2 | 6 | 14 | 1 |
Swell 3 Height (m) Direction Period (s) | E 12 | SSE 4 | E 12 | — | E 12 | E 12 | — | E 12 | — | — | — | — | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 | E 7 | E 11 | E 11 |
| kJ | 3 | 1 | 3 | — | 3 | 3 | — | 11 | — | — | — | — | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 9 | 2 | 4 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | — | WSW 2 | — | — | — | — | N 3 | N 3 | NE 4 | NE 6 | NE 6 | NE 6 | — | — | — | — | — | — | — | SE 3 | ESE 3 | — | E 4 | — |
| kJ | — | 1 | — | — | — | — | 1 | 3 | 20 | 151 | 136 | 84 | — | — | — | — | — | — | — | 1 | 2 | — | 2 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 55 | 67 | 67 | 108 | 181 | 181 | 523 | 531 | 531 | 28 | 32 | 32 | 32 | 1237 | 1237 | 58 | 1051 | 961 | 961 | 961 | 961 | 58 | 815 | 784 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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