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 4PM is: 0.5m 8s primary swell from a East-southeast direction and 0.1m 14s secondary swell from a Southeast direction, 0.5m 4s secondary swell from a Northeast direction (forecast issued at 07:00am August 21). The wind direction is predicted to be cross-onshore.
| 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 ForecastModerate rain (total 11mm), heaviest on Sat afternoon. Warm (max 20°C on Fri morning, min 16°C on Sat morning). Wind will be generally light. | |||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||||||||
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) | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | SE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | E 6 | E 6 | E 6 | E 6 | ESE 12 | SE 4 | SE 6 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 47 | 28 | 39 | 38 | 38 | 37 | 36 | 36 | 35 | 32 | 47 | 82 | 74 | 48 | 47 | 34 | 39 | 31 | 31 | 29 | 28 | 45 | 104 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | glassy | glassy | cross-on | cross-on | cross-on | glassy | glassy |
High Tide | 7:03AM1.92m | 7:20PM2.21m | 8:05AM1.89m | 8:19PM2.22m | 9:06AM1.92m | 9:15PM2.28m | |||||||||||||||||
Low Tide | 1:53PM0.50m | 2:37AM0.30m | 2:49PM0.53m | 3:32AM0.30m | 3:43PM0.52m | ||||||||||||||||||
 |  |  | | |  | | | |  | | | | | | | | | | |  |  | | |
 | 5:54 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | 7:36 | — | — | — | — | — | — | — | 7:35 | — | — | — | — | — | — | — | 7:32 | — | — |
mm | — | — | — | — | — | — | — | — | — | 1 | 1 | 3 | 2 | — | — | — | — | — | — | — | 1 | 2 | 1 |
Temp °C | 19 | 19 | 20 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 16 | 16 | 17 | 17 | 16 | 16 | 16 | 17 | 19 | 20 | 20 | 20 | 20 |
Feels °C | 19 | 18 | 17 | 17 | 18 | 19 | 20 | 18 | 17 | 15 | 13 | 13 | 16 | 16 | 16 | 17 | 17 | 18 | 20 | 20 | 21 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SE 5 | SE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | E 6 | E 6 | E 6 | E 6 | E 6 | ESE 12 | ESE 12 |
| kJ | 47 | 28 | 39 | 38 | 38 | 37 | 36 | 36 | 35 | 22 | 47 | 82 | 74 | 48 | 47 | 34 | 39 | 31 | 31 | 23 | 15 | 28 | 28 |
Swell 2 Height (m) Direction Period (s) | ENE 7 | E 7 | E 15 | SE 14 | SE 14 | NE 4 | SE 14 | ESE 14 | SE 5 | E 8 | ESE 8 | ESE 13 | ESE 13 | ESE 13 | NE 4 | NNE 4 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 12 | SE 9 | SE 8 |
| kJ | 5 | 4 | 4 | 8 | 8 | 3 | 8 | 18 | 9 | 32 | 20 | 17 | 17 | 17 | 5 | 6 | 31 | 30 | 29 | 29 | 28 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 15 | — | — | — | SE 14 | SE 13 | SE 14 | ESE 14 | ESE 13 | ESE 13 | SE 10 | SE 9 | E 8 | ESE 13 | ESE 13 | E 8 | SE 8 | SE 9 | ESE 7 | ESE 7 | — | — |
| kJ | 4 | 4 | — | — | — | 8 | 7 | 7 | 18 | 18 | 17 | 4 | 3 | 5 | 16 | 16 | 5 | 3 | 3 | 5 | 5 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NE 3 | ENE 4 | NE 4 | ENE 4 | NE 4 | NE 4 | ENE 3 | NE 4 | NE 4 | NE 4 | NNE 4 | NNE 4 | N 4 | — | — | — | — | — | SSE 3 | SE 4 | SE 6 |
| kJ | — | — | 6 | 8 | 6 | 5 | 3 | 2 | 7 | 15 | 24 | 27 | 20 | 20 | 7 | — | — | — | — | — | 4 | 45 | 104 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 13 | 13 | 499 | 863 | 863 | 170 | 13 | 13 | 170 | 316 | 1036 | 116 | 27 | 13 | 0 | 4 | 0 | 0 | 895 | 401 | 403 | 0 | 0 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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