Surf Forecasts:
How big are the waves at Greenhill today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 1.5ft (0.4m), 9s period with SE swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 1.5ft (0.4m), 9s period with SE swell.
- Evening surf: Evening surf (21 Sep, local time) - 1.5ft (0.4m), 8s period with SE swell.
The current surf forecast for Greenhill at 4AM is: 0.6m 4s primary swell from a Southeast direction and 0.3m 8s secondary swell from a Southeast direction (forecast issued at 07:00pm September 20). The wind direction is predicted to be offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 1.5ft (0.4m) | 9s |
| Afternoon (21 Sep) | 1.5ft (0.4m) | 9s |
| Evening (21 Sep) | 1.5ft (0.4m) | 8s |
Table - waves today at Greenhill. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Sun night. Very mild (max 19°C on Sun night, min 12°C on Tue night). Winds increasing (calm on Sun night, fresh winds from the ENE by Wed morning). | |||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | |||||||||||||||||
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 4 | SE 4 | SE 5 | SE 4 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | E 6 | E 7 | E 7 | E 7 | E 6 | E 6 | E 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 25 | 32 | 31 | 24 | 19 | 19 | 19 | 27 | 27 | 23 | 28 | 20 | 0 | 199 | 285 | 294 | 245 | 0 | 302 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | glassy | off | off | off | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:53PM1.02m | 4:23AM0.88m | 4:51PM1.05m | 5:18AM0.95m | 5:39PM1.10m | ||||||||||||||
Low Tide | 10:26PM0.41m | 10:22AM0.39m | 11:17PM0.36m | 11:19AM0.33m | |||||||||||||||
 |  | |  | |  | | |  | |  | | | | | | | | | |
 | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:33 | — | — | — | — | — | — |
 | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — |
mm | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 19 | 19 | 19 | 14 | 13 | 15 | 18 | 17 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 14 | 12 | 12 |
Feels °C | 16 | 18 | 19 | 21 | 10 | 8 | 10 | 13 | 12 | 11 | 11 | 9 | 9 | 8 | 7 | 7 | 8 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 8 | SE 4 | SE 4 | SE 4 | SE 6 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | — | — | S 15 | S 14 | SE 14 | — | — |
| kJ | 17 | 16 | 11 | 24 | 16 | 7 | 9 | 27 | 27 | 23 | 28 | 20 | — | — | 4 | 4 | 8 | — | — |
Swell 2 Height (m) Direction Period (s) | — | E 7 | SSE 10 | SE 8 | SE 9 | SE 9 | SE 9 | SW 5 | SW 5 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 1 | 10 | 11 | 19 | 19 | 19 | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | SSE 9 | SSE 8 | SE 11 | SE 6 | SE 6 | SW 5 | E 8 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 7 | 7 | 5 | 1 | 6 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | SE 4 | SE 5 | SSW 4 | — | NNE 3 | NE 4 | NE 5 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | E 6 | E 7 | E 7 | E 7 | E 6 | E 6 | E 7 |
| kJ | 25 | 32 | 31 | 3 | — | 8 | 28 | 41 | 64 | 83 | 78 | 87 | 117 | 199 | 285 | 294 | 245 | 200 | 302 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 622 | 227 | 171 | 95 | 451 | 621 | 632 | 632 | 635 | 757 | 759 | 759 | 624 | 757 | 764 | 680 | 1723 | 866 | 865 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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