Surf Forecasts:
How big are the waves at Plum Island today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 1.5ft (0.5m), 8s period with ESE swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 1.5ft (0.5m), 8s period with ESE swell.
- Evening surf: Evening surf (21 Aug, local time) - 1.5ft (0.5m), 8s period with ESE swell.
The current surf forecast for Plum Island at 2AM is: 0.5m 8s primary swell from a East-southeast direction and 0.3m 3s secondary swell from a North direction (forecast issued at 07:00pm August 20). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 1.5ft (0.5m) | 8s |
| Afternoon (21 Aug) | 1.5ft (0.5m) | 8s |
| Evening (21 Aug) | 1.5ft (0.5m) | 8s |
Table - waves today at Plum Island. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 20mm), heaviest during Thu night. 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 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ENE 4 | E 5 | E 6 | E 6 | ESE 6 | ESE 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 35 | 34 | 40 | 39 | 28 | 28 | 39 | 38 | 38 | 37 | 36 | 36 | 35 | 31 | 56 | 121 | 130 | 72 | 57 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | cross-off | glassy | cross | cross | cross-on | cross-on | on | on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:23PM2.24m | 7:03AM1.92m | 7:20PM2.21m | 8:05AM1.89m | 8:19PM2.22m | ||||||||||||||
Low Tide | 1:38AM0.27m | 1:53PM0.50m | 2:37AM0.30m | 2:49PM0.53m | |||||||||||||||
 |  | | |  | |  | | |  | | |  | | | |  | | | |
 | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | 7:37 | — | — | — | — | — | — | — | 7:36 | — | — | — | — | — | — | — | 7:35 | — | — |
mm | — | 2 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 |
Temp °C | 25 | 21 | 16 | 19 | 18 | 19 | 20 | 20 | 20 | 19 | 19 | 18 | 17 | 18 | 18 | 17 | 17 | 17 | 18 |
Feels °C | 25 | 19 | 14 | 20 | 17 | 18 | 16 | 17 | 18 | 18 | 20 | 17 | 14 | 15 | 15 | 15 | 16 | 17 | 19 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 13 | ESE 13 | ESE 6 | ESE 6 |
| kJ | 35 | 34 | 40 | 39 | 28 | 28 | 39 | 38 | 38 | 37 | 36 | 36 | 35 | 24 | 20 | 17 | 17 | 72 | 57 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SSE 3 | E 16 | NNW 3 | E 7 | E 7 | E 15 | SE 14 | SE 14 | SE 5 | SE 14 | ESE 14 | SE 4 | ESE 13 | ESE 13 | SE 9 | SE 9 | E 8 | ESE 13 |
| kJ | 3 | 1 | 5 | 2 | 4 | 4 | 4 | 8 | 8 | 4 | 8 | 18 | 3 | 18 | 17 | 3 | 3 | 5 | 16 |
Swell 3 Height (m) Direction Period (s) | E 16 | E 9 | E 15 | E 8 | E 15 | E 15 | — | — | E 14 | SE 14 | SE 13 | ESE 14 | ESE 14 | — | S 9 | SE 13 | SE 9 | ESE 13 | SE 9 |
| kJ | 5 | 2 | 5 | 1 | 4 | 4 | — | — | 4 | 8 | 7 | 18 | 18 | — | 2 | 7 | 3 | 17 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | NW 3 | N 3 | — | NNE 2 | NE 3 | ENE 3 | ENE 4 | ENE 4 | NE 4 | NE 3 | NE 4 | ENE 4 | E 5 | E 6 | E 6 | NNE 4 | NNE 4 |
| kJ | — | — | 4 | 2 | — | 1 | 2 | 7 | 7 | 5 | 3 | 3 | 12 | 31 | 56 | 121 | 130 | 18 | 13 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 926 | 113 | 54 | 4 | 54 | 499 | 499 | 344 | 863 | 499 | 54 | 13 | 307 | 868 | 854 | 25 | 25 | 25 | 13 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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