Surf Forecasts:
How big are the waves at Nantasket Beach today (20 Jun):
- Morning surf: Morning surf (20 Jun, local time) - 0.5ft (0.1m), 10s period with SE swell.
- Afternoon surf: Afternoon surf (20 Jun, local time) - 0.5ft (0.1m), 13s period with E swell.
- Evening surf: Evening surf (20 Jun, local time) - 0.5ft (0.1m), 12s period with E swell.
The current surf forecast for Nantasket Beach at 8PM is: 0.1m 10s primary swell from a Southeast direction and 0.1m 12s secondary swell from a East direction (forecast issued at 01:00pm June 20). An open ocean swell of 0.3m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jun) | 0.5ft (0.1m) | 10s |
| Afternoon (20 Jun) | 0.5ft (0.1m) | 13s |
| Evening (20 Jun) | 0.5ft (0.1m) | 12s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 36mm), heaviest during Mon night. Warm (max 25°C on Sun afternoon, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 20 | Sunday 21 | Monday 22 | Tue 23 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 11 | E 11 | E 11 | E 11 | E 11 | S 3 | ESE 5 | SE 5 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 4 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | off | off | off | off | off | glassy | on | cross-on | glassy | off | off | glassy | cross-on | cross-off | on | on | on | cross-on | cross-off | cross |
High Tide | 4:38PM2.89m | 4:55AM2.90m | 5:35PM2.87m | 5:57AM2.74m | 6:30PM2.85m | 6:57AM2.61m | ||||||||||||||||||
Low Tide | 10:17AM-0.08m | 10:41PM0.23m | 11:14AM0.07m | 11:44PM0.28m | 12:09PM0.20m | 00:46AM0.30m | ||||||||||||||||||
 |  | |  |  | |  |  | | | | | |  | | | |  |  |  |  |  | | | |
 | — | — | — | — | — | — | 5:05 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — |
 | — | — | — | 8:22 | — | — | — | — | — | — | — | 8:22 | — | — | — | — | — | — | — | 8:22 | — | — | — | 8:22 |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 6 | 14 | 7 | 2 | 1 | 2 |
Temp °C | 22 | 24 | 24 | 21 | 19 | 16 | 15 | 18 | 24 | 25 | 22 | 20 | 21 | 19 | 19 | 20 | 23 | 17 | 15 | 15 | 15 | 14 | 15 | 14 |
Feels °C | 18 | 20 | 21 | 18 | 18 | 14 | 13 | 15 | 22 | 24 | 20 | 19 | 21 | 18 | 19 | 20 | 22 | 17 | 15 | 14 | 14 | 12 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | N 4 | — | SE 10 | SE 10 | SE 10 | SE 10 | E 9 | — | — | — | SE 7 | E 12 | E 11 | E 11 | E 11 | E 11 | E 11 | ESE 3 | ESE 5 | SE 5 |
| kJ | 4 | 4 | 4 | 4 | 1 | — | 4 | 4 | 4 | 4 | 1 | — | — | — | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | E 13 | E 13 | E 13 | E 12 | SE 10 | SE 10 | — | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | — | — | — | — | — | E 11 | E 11 | E 11 | — |
| kJ | 3 | 3 | 3 | 3 | 4 | 4 | — | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | — | — | — | — | — | 2 | 2 | 2 | — |
Swell 3 Height (m) Direction Period (s) | — | E 13 | E 13 | E 12 | E 12 | E 12 | E 12 | — | — | — | — | E 8 | — | — | — | — | — | — | E 11 | E 11 | — | E 8 | — | — |
| kJ | — | 3 | 3 | 3 | 3 | 3 | 3 | — | — | — | — | 1 | — | — | — | — | — | — | 2 | 2 | — | 1 | — | — |
Wind waves Height (m) Direction Period (s) | WNW 3 | WNW 3 | NW 3 | NNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ESE 2 | S 3 | — | NE 3 |
| kJ | 4 | 4 | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 349 | 113 | 110 | 85 | 85 | 85 | 90 | 113 | 113 | 1949 | 349 | 523 | 98 | 160 | 181 | 660 | 3546 | 2684 | 1945 | 336 | 295 | 131 | 90 | 90 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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