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Green Harbor Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Surf Forecasts:
Green Harbor surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 1 am Tuesday 19 May 2026 EDTForecast update in hr min s Forecast update imminent
Green Harbor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Green Harbor sea temperature is
11.2° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 9AM is: 0.2m 10s primary swell from a East-southeast direction and 0.1m 5s secondary swell from a Southeast direction, 0.4m 3s secondary swell from a Southwest direction (forecast issued at 01:00am May 19). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 0.5ft (0.2m) | 10s |
| Afternoon (19 May) | 0.5ft (0.2m) | 10s |
| Evening (19 May) | 2.5ft (0.7m) | 4s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 5mm), mostly falling on Wed afternoon. Warm (max 33°C on Wed afternoon, min 9°C on Thu afternoon). Winds decreasing (fresh winds from the SSW on Tue afternoon, light winds from the NE by Thu night). | ||||||||||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | S 4 | SSW 4 | ESE 10 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | E 10 | E 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | NNE 6 | NE 5 | NE 5 | E 9 | |
8 | 8 | 9 | 9 | 9 | 12 | 11 | 9 | 9 | 8 | 9 | 9 | 9 | 7 | 7 | 9 | 8 | 8 | 8 | 7 | 39 | 30 | 12 | 7 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | cross-on | on | on | on | on | on | on | cross-on | on | cross-on | on | cross-on | cross-off | cross-off | cross-off | off | cross-off | cross | cross-on | on | |
High Tide | 1:27AM3.53m | 2:08PM2.95m | 2:21AM3.48m | 3:04PM2.91m | 3:19AM3.38m | 4:01PM2.88m | ||||||||||||||||||
Low Tide | 7:54AM-0.42m | 8:04PM0.03m | 8:49AM-0.36m | 9:01PM0.08m | 9:45AM-0.26m | 10:00PM0.14m | ||||||||||||||||||
 | |  | | | |  | | | | | |  | | |  |  | |  | | | | | | |
 | — | 5:18 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 8:01 | — |
— | — | — | — | — | — | 1 | — | — | — | — | — | — | 3 | 1 | — | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 19 | 22 | 28 | 31 | 27 | 23 | 22 | 22 | 21 | 24 | 30 | 33 | 23 | 23 | 20 | 16 | 14 | 11 | 11 | 9 | 12 | 12 | 12 |
16 | 16 | 20 | 26 | 28 | 23 | 22 | 21 | 21 | 19 | 23 | 28 | 31 | 23 | 22 | 16 | 12 | 8 | 4 | 6 | 5 | 8 | 8 | 8 | |
Swell 1 Height (m) Direction Period (s) | ESE 4 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | E 10 | NNW 4 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | NNE 6 | NE 5 | NE 5 | NE 4 |
 kJ | 1 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 9 | 9 | 9 | 7 | 1 | 9 | 8 | 8 | 8 | 7 | 39 | 30 | 12 | 5 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | — | SE 5 | E 13 | E 13 | E 16 | E 16 | E 16 | E 16 | E 16 | E 12 | E 12 | SE 5 | SE 5 | E 10 | E 12 | E 14 | E 14 | E 14 | E 15 | E 9 | E 9 | E 9 | E 9 |
| kJ | 8 | — | 1 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 1 | 1 | 7 | 3 | 4 | 4 | 4 | 4 | 7 | 7 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | NE 4 | NE 4 | E 13 | — | E 16 | — | — | — | E 12 | — | — | E 15 | — | — | SE 5 | E 15 | SSE 7 | E 12 | E 15 | SE 6 | E 14 | E 15 | — | S 6 |
| kJ | 1 | 1 | 3 | — | 5 | — | — | — | 3 | — | — | 5 | — | — | 1 | 4 | 4 | 3 | 4 | 1 | 4 | 4 | — | 3 |
Wind waves Height (m) Direction Period (s) | SW 3 | SSW 3 | SW 3 | SW 3 | S 3 | S 4 | SSW 4 | SW 3 | SW 3 | SW 3 | SW 3 | SW 3 | SW 3 | SW 3 | WSW 2 | NW 4 | NW 4 | NNW 4 | N 4 | N 4 | — | — | — | — |
| kJ | 2 | 3 | 2 | 2 | 4 | 12 | 11 | 5 | 1 | 2 | 2 | 3 | 2 | 1 | 1 | 4 | 3 | 16 | 30 | 20 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 91 | 131 | 131 | 124 | 124 | 81 | 43 | 92 | 81 | 81 | 132 | 341 | 131 | 87 | 87 | 87 | 125 | 85 | 109 | 109 | 106 | 524 | 526 | 647 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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