Surf Forecasts:
How big are the waves at Plum Island today (20 Jul):
- Morning surf: Morning surf (20 Jul, local time) - 0.5ft (0.2m), 8s period with SSE swell.
- Afternoon surf: Afternoon surf (20 Jul, local time) - 1.5ft (0.4m), 5s period with SSE swell.
- Evening surf: Evening surf (20 Jul, local time) - 3.5ft (1.1m), 4s period with SSE swell.
The current surf forecast for Plum Island at 9PM is: 1.1m 4s primary swell from a South-southeast direction and 0.1m 12s secondary swell from a East direction, 0.1m 12s secondary swell from a Southeast direction (forecast issued at 01:00pm July 20). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jul) | 0.5ft (0.2m) | 8s |
| Afternoon (20 Jul) | 1.5ft (0.4m) | 5s |
| Evening (20 Jul) | 3.5ft (1.1m) | 4s |
Table - waves today at Plum Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 12mm), heaviest on Tue night. Warm (max 28°C on Wed afternoon, min 16°C on Wed night). Winds increasing (light winds from the S on Mon afternoon, fresh winds from the SSW by Tue night). | |||||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||||
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) | SSE 8 | SSE 8 | SSE 3 | SSE 4 | S 5 | S 4 | S 4 | S 4 | SSE 4 | SSE 5 | SSE 5 | SE 5 | SSE 6 | SSE 7 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 7 | 7 | 10 | 47 | 53 | 23 | 12 | 10 | 23 | 59 | 87 | 110 | 223 | 237 | 150 | 89 | 142 | 220 | 356 | 404 | 138 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | off | off |
High Tide | 5:24PM2.43m | 5:48AM2.23m | 6:16PM2.36m | 6:46AM2.08m | 7:11PM2.30m | ||||||||||||||||
Low Tide | 11:43AM0.05m | 00:17AM0.13m | 12:37PM0.19m | 1:16AM0.17m | 1:32PM0.30m | ||||||||||||||||
 | | | |  | | |  |  | | |  |  |  | | | | | | | | |
 | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — |
 | — | — | — | 8:15 | — | — | — | — | — | — | — | 8:15 | — | — | — | — | — | — | — | 8:14 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 10 | — | — | — | — | — | — | — | — |
Temp °C | 24 | 26 | 25 | 23 | 20 | 19 | 18 | 19 | 23 | 24 | 23 | 20 | 21 | 21 | 21 | 23 | 26 | 28 | 28 | 24 | 21 |
Feels °C | 22 | 24 | 21 | 20 | 17 | 17 | 17 | 19 | 20 | 20 | 20 | 18 | 19 | 20 | 21 | 24 | 25 | 26 | 28 | 22 | 18 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SSE 8 | E 12 | E 12 | SE 8 | SE 8 | SE 8 | SE 8 | SE 11 | SE 11 | SE 11 | — | SE 11 | — | SE 11 | ESE 7 | — | — | SSE 7 | SSE 7 | SSE 7 |
| kJ | 7 | 7 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | — | 5 | — | 5 | 40 | — | — | 222 | 242 | 138 |
Swell 2 Height (m) Direction Period (s) | SE 6 | E 12 | SE 12 | SE 12 | E 12 | E 12 | S 7 | SE 12 | E 12 | — | — | — | — | — | E 11 | SE 11 | — | — | — | — | — |
| kJ | 1 | 3 | 6 | 6 | 3 | 3 | 1 | 5 | 3 | — | — | — | — | — | 2 | 5 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 12 | SE 12 | — | — | S 12 | S 12 | E 11 | E 12 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 6 | — | — | 3 | 3 | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 5 | SSE 3 | SSE 4 | S 5 | S 4 | S 4 | S 4 | SSE 4 | SSE 5 | SSE 5 | SE 5 | SSE 6 | SSE 7 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | — |
| kJ | — | 5 | 10 | 47 | 53 | 23 | 12 | 10 | 23 | 59 | 87 | 110 | 223 | 237 | 150 | 89 | 142 | 220 | 356 | 404 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 211 | 239 | 627 | 499 | 499 | 499 | 499 | 1276 | 1276 | 1276 | 1276 | 516 | 789 | 789 | 182 | 0 | 182 | 182 | 0 | 0 | 0 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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