Surf Forecasts:
How big are the waves at Nantasket Beach today (18 Jun):
- Morning surf: Morning surf (18 Jun, local time) - 0.5ft (0.2m), 8s period with E swell.
- Afternoon surf: Afternoon surf (18 Jun, local time) - 3.5ft (1.1m), 5s period with SE swell.
- Evening surf: Evening surf (18 Jun, local time) - 2.5ft (0.8m), 7s period with SE swell.
The current surf forecast for Nantasket Beach at 5PM is: 1.1m 6s primary swell from a Southeast direction and 0.2m 7s secondary swell from a East direction, 0.1m 14s secondary swell from a East direction (forecast issued at 01:00pm June 18). The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Jun) | 0.5ft (0.2m) | 8s |
| Afternoon (18 Jun) | 3.5ft (1.1m) | 5s |
| Evening (18 Jun) | 2.5ft (0.8m) | 7s |
Table - waves today at Nantasket Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Warm (max 26°C on Fri afternoon, min 14°C on Sat night). Winds decreasing (fresh winds from the S on Thu afternoon, light winds from the W by Sun morning). | ||||||||||||||||||||||||
Thu 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
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) | SSE 4 | SE 5 | SE 6 | SE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 5 | SE 9 | SE 10 | SE 10 | SE 10 | E 13 | E 13 | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 | SE 10 | E 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 8 | 43 | 75 | 57 | 35 | 22 | 24 | 13 | 7 | 3 | 3 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | off | off | off | off |
High Tide | 2:44PM2.95m | 2:56AM3.25m | 3:40PM2.92m | 3:54AM3.08m | 4:38PM2.89m | 4:55AM2.90m | ||||||||||||||||||
Low Tide | 8:27AM-0.33m | 8:41PM0.08m | 9:22AM-0.22m | 9:40PM0.15m | 10:17AM-0.08m | 10:41PM0.23m | ||||||||||||||||||
 |  |  |  |  |  | |  | | | | | | | | | | | | |  |  | | | |
 | — | — | — | — | — | — | 5:05 | — | — | — | — | — | — | — | 5:05 | — | — | — | — | — | — | — | 5:05 | — |
 | — | — | — | 8:22 | — | — | — | — | — | — | — | 8:22 | — | — | — | — | — | — | — | 8:22 | — | — | — | 8:22 |
mm | — | — | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 23 | 24 | 23 | 21 | 20 | 19 | 19 | 23 | 26 | 26 | 23 | 20 | 18 | 17 | 18 | 21 | 22 | 22 | 19 | 16 | 15 | 14 | 18 |
Feels °C | 17 | 18 | 21 | 23 | 20 | 17 | 14 | 15 | 18 | 21 | 20 | 18 | 16 | 13 | 11 | 12 | 15 | 17 | 19 | 17 | 14 | 14 | 13 | 16 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 7 | E 7 | SE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 5 | ESE 5 | SE 5 | SE 5 | SE 10 | SE 10 | SE 10 | SE 9 | SE 10 | SE 10 | SE 10 | SE 10 | N 4 | SE 10 | SE 10 | SE 10 |
| kJ | 4 | 4 | 4 | 57 | 35 | 22 | 24 | 13 | 3 | 3 | 1 | 1 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 1 | 4 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | E 14 | E 14 | E 14 | E 14 | E 14 | E 8 | E 7 | E 7 | ESE 8 | SE 9 | SE 9 | SE 10 | SE 5 | SE 6 | E 13 | E 13 | E 13 | E 13 | E 13 | E 12 | SE 10 | E 12 | — | — |
| kJ | 4 | 4 | 4 | 4 | 4 | 1 | 1 | 1 | 7 | 3 | 3 | 4 | 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 3 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 14 | E 14 | E 14 | E 14 | E 14 | E 6 | E 6 | E 5 | E 7 | E 7 | E 7 | E 7 | SE 5 | — | — | — | E 12 | E 12 | E 12 | — | E 12 |
| kJ | — | — | — | 4 | 4 | 4 | 4 | 4 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | 3 | 3 | 3 | — | 3 |
Wind waves Height (m) Direction Period (s) | SSE 4 | SE 5 | SE 6 | WSW 3 | SSW 3 | — | WNW 2 | WNW 3 | W 3 | W 3 | WNW 3 | W 3 | W 3 | WNW 3 | W 3 | W 3 | WNW 3 | WNW 3 | WNW 3 | NW 3 | NW 3 | NNW 4 | NNW 4 | — |
| kJ | 8 | 43 | 75 | 1 | 2 | — | 1 | 2 | 3 | 2 | 3 | 5 | 2 | 3 | 2 | 5 | 6 | 6 | 2 | 2 | 1 | 1 | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 3499 | 3464 | 3499 | 0 | 26 | 12 | 95 | 95 | 85 | 85 | 336 | 102 | 93 | 102 | 102 | 984 | 348 | 117 | 113 | 102 | 90 | 98 | 98 | 113 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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