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Surf Forecasts:
Plum Island surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 12 am Friday 05 Dec 2025 ESTForecast update in hr min s Forecast update imminent
Plum Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Plum Island sea temperature is
8.7° C
(Which is slightly warmer than usual)How big are the waves at Plum Island today?
The current surf forecast for Plum Island at 7AM is: 0.4m 10s primary swell from a Southeast direction and 0.3m 4s secondary swell from a North-northeast direction (forecast issued at 12:00am December 05). An open ocean swell of 0.3m 4s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 Dec) | 1.5ft (0.4m) | 10s |
| Afternoon (05 Dec) | 1.5ft (0.4m) | 10s |
| Evening (05 Dec) | 1.5ft (0.4m) | 10s |
Table - waves today at Plum Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 05 | Saturday 06 | Sunday 07 | ||||||||||||||||||||||
| 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 35 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 23 | 23 | 22 | 21 | 21 | 21 | 12 | 12 | 12 | 12 | 19 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- off | glass | off |
High Tide / height (m) | 10:57PM 2.54 | 11:11AM 3.09 | 11:51PM 2.54 | 12:03PM 3.08 | 12:44AM 2.51 | 12:57PM 3.01 | ||||||||||||||||||
Low Tide / height (m) | 5:23AM -0.08 | 6:09PM -0.49 | 6:16AM -0.05 | 7:03PM -0.45 | 7:11AM 0.00 | |||||||||||||||||||
Friday 05 | Saturday 06 | Sunday 07 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:58 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 4:08 | - | - | - | - | - | - | - | 4:08 | - | - | - | - | - | - | - | 4:08 | - |
 | | |  | | |  |  | |  | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | -10 | -13 | -13 | -13 | -10 | -6 | -3 | -3 | -3 | -3 | -2 | -2 | 0 | 2 | 2 | 2 | 1 | 0 | 0 | 0 | 1 | 2 | 2 | 1 |
| Feels °C (?) | -20 | -22 | -19 | -18 | -16 | -13 | -9 | -9 | -9 | -8 | -7 | -6 | -5 | -3 | -3 | -3 | -4 | -6 | -5 | -6 | -4 | -2 | -1 | -3 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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