Surf Forecasts:
How big are the waves at Plum Island today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 1ft (0.3m), 8s period with SE swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 1.5ft (0.4m), 9s period with SE swell.
- Evening surf: Evening surf (18 Aug, local time) - 2.5ft (0.8m), 8s period with SE swell.
The current surf forecast for Plum Island at 8AM is: 0.3m 8s primary swell from a Southeast direction and 0.4m 5s secondary swell from a Southeast direction (forecast issued at 01:00am August 18). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 1ft (0.3m) | 8s |
| Afternoon (18 Aug) | 1.5ft (0.4m) | 9s |
| Evening (18 Aug) | 2.5ft (0.8m) | 8s |
Table - waves today at Plum Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Thu afternoon. Warm (max 27°C on Wed afternoon, min 16°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 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) | SE 9 | SE 9 | SE 8 | SE 8 | SE 9 | SE 9 | SE 8 | SE 8 | SE 9 | SE 7 | SE 7 | SE 7 | SE 7 | ESE 7 | SE 6 | SE 6 | SE 6 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 7 | ESE 8 | ESE 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 12 | 12 | 11 | 11 | 20 | 62 | 86 | 82 | 91 | 60 | 38 | 47 | 37 | 29 | 33 | 38 | 38 | 78 | 64 | 59 | 45 | 37 | 37 | 40 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross-on | on | on | cross-on | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | cross-off | off | off | off | glassy | glassy | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:20AM2.30m | 4:42PM2.40m | 5:10AM2.14m | 5:30PM2.31m | 6:04AM2.00m | 6:23PM2.24m | ||||||||||||||||||
Low Tide | 11:07AM0.16m | 11:43PM0.12m | 11:59AM0.30m | 00:40AM0.21m | 12:55PM0.42m | |||||||||||||||||||
 | |  |  | | |  | | |  | |  | | | | | | | | | |  |  | | |
 | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:40 | — | — | — | — | — | — | — | 7:38 | — | — | — | — | — | — | — | 7:37 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 2 | — |
Temp °C | 20 | 20 | 20 | 20 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 24 | 26 | 27 | 26 | 24 | 23 | 22 | 22 | 24 | 20 | 16 | 17 | 17 |
Feels °C | 23 | 22 | 22 | 21 | 22 | 21 | 22 | 22 | 23 | 22 | 23 | 27 | 27 | 27 | 26 | 24 | 23 | 22 | 23 | 25 | 20 | 15 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | SE 4 | SE 4 | SE 5 | SE 5 | ESE 4 | SE 9 | SE 8 | SE 8 | SE 9 | SE 7 | SE 7 | SE 7 | SE 7 | ESE 7 | SE 6 | SE 6 | SE 6 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 7 | ESE 8 | ESE 8 |
| kJ | 4 | 7 | 8 | 8 | 8 | 62 | 86 | 82 | 91 | 60 | 38 | 47 | 37 | 29 | 33 | 38 | 38 | 78 | 64 | 59 | 45 | 37 | 37 | 40 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 8 | SE 8 | SE 9 | ESE 4 | ESE 4 | — | — | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | — | — | — | — | E 16 | E 16 | E 16 |
| kJ | 12 | 12 | 11 | 11 | 20 | 7 | 3 | — | — | 22 | 19 | 12 | 12 | 12 | 12 | 18 | 18 | — | — | — | — | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 7 | — | — | — | — | — | — | — | — | E 16 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 | — | — | — | — | — | — | — | — | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 4 | — | ESE 4 | — | — | — | — | — | — | — | SE 3 | S 4 | S 5 | — | — | — | — | — | — | S 3 | SSW 3 |
| kJ | — | — | — | 3 | — | 6 | — | — | — | — | — | — | — | 2 | 13 | 17 | — | — | — | — | — | — | 2 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 169 | 169 | 170 | 152 | 177 | 166 | 166 | 0 | 0 | 0 | 4 | 4 | 4 | 499 | 0 | 0 | 4 | 0 | 0 | 4 | 13 | 54 | 54 | 4 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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