Surf Forecasts:
How big are the waves at Greenhill today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 1ft (0.3m), 11s period with SE swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 2.5ft (0.8m), 4s period with SE swell.
- Evening surf: Evening surf (20 Sep, local time) - 2.5ft (0.8m), 4s period with SSE swell.
The current surf forecast for Greenhill at 5PM is: 0.8m 4s primary swell from a Southeast direction and 0.3m 10s secondary swell from a Southeast direction, 0.2m 7s secondary swell from a East-southeast direction (forecast issued at 01:00pm September 20). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 1ft (0.3m) | 11s |
| Afternoon (20 Sep) | 2.5ft (0.8m) | 4s |
| Evening (20 Sep) | 2.5ft (0.8m) | 4s |
Table - waves today at Greenhill. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 11mm), heaviest on Tue afternoon. Very mild (max 19°C on Sun night, min 11°C on Tue afternoon). Winds increasing (light winds from the NNW on Sun night, fresh winds from the NE by Wed morning). | |||||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 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) | SE 11 | SE 11 | SE 4 | SSE 4 | SSE 4 | SSE 4 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | E 6 | E 7 | E 6 | S 14 | S 14 | E 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 18 | 18 | 21 | 24 | 21 | 15 | 12 | 19 | 12 | 37 | 32 | 32 | 39 | 36 | 33 | 0 | 248 | 243 | 4 | 4 | 235 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | on | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | 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 | 9:15AM0.41m | 10:26PM0.41m | 10:22AM0.39m | 11:17PM0.36m | 11:19AM0.33m | ||||||||||||||||
 |  | |  |  | | | | |  | |  | | | | | | | | | | |
 | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:33 | — | — | — | — | — | — |
 | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — |
mm | — | 2 | 2 | 1 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | 3 | 1 | — | — |
Temp °C | 17 | 17 | 18 | 19 | 19 | 17 | 14 | 13 | 15 | 18 | 17 | 15 | 15 | 14 | 14 | 14 | 12 | 11 | 13 | 12 | 12 |
Feels °C | 15 | 15 | 17 | 19 | 19 | 18 | 10 | 9 | 10 | 13 | 13 | 10 | 11 | 9 | 10 | 8 | 5 | 5 | 7 | 5 | 6 |
Swell 1 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 10 | SE 10 | SE 8 | SSE 4 | SE 5 | SE 5 | SE 6 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | — | S 15 | S 14 | S 14 | S 14 | — |
| kJ | 18 | 18 | 17 | 16 | 11 | 15 | 5 | 9 | 9 | 37 | 32 | 32 | 39 | 36 | 33 | — | 4 | 4 | 4 | 4 | — |
Swell 2 Height (m) Direction Period (s) | ESE 7 | — | ESE 7 | SE 7 | SSE 10 | SE 8 | SSW 4 | SE 9 | SE 9 | SW 5 | SW 5 | SW 5 | — | — | — | — | — | — | — | — | — |
| kJ | 5 | — | 5 | 2 | 10 | 11 | 6 | 19 | 12 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | SE 9 | SSE 9 | SE 6 | SE 11 | SE 9 | SSW 4 | SW 5 | E 8 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 3 | 7 | 2 | 5 | 12 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | SE 4 | SE 4 | SSE 4 | SSE 4 | SW 4 | — | NNE 3 | NE 4 | ENE 4 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | E 6 | E 7 | E 6 | ENE 6 | ENE 6 | E 6 |
| kJ | 12 | 16 | 21 | 24 | 21 | 5 | — | 7 | 18 | 26 | 46 | 57 | 59 | 67 | 84 | 134 | 248 | 243 | 179 | 215 | 235 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 176 | 1826 | 1718 | 230 | 171 | 38 | 227 | 227 | 622 | 632 | 632 | 635 | 632 | 635 | 624 | 757 | 624 | 1115 | 605 | 866 | 862 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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