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 SSE 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 7AM is: 0.3m 11s primary swell from a Southeast direction and 0.2m 7s secondary swell from a East-southeast direction, 0.5m 3s secondary swell from a Southeast direction (forecast issued at 01:00am September 20). The wind direction is predicted to be cross-shore.
| 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 14mm), heaviest on Sun night. Very mild (max 19°C on Sun night, min 12°C on Tue afternoon). Winds increasing (light winds from the NNW on Sun night, fresh winds from the ENE by Tue night). | ||||||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||||||
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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | ESE 7 | SSE 11 | SE 11 | SE 11 | SE 11 | SSE 4 | SSE 4 | SSE 4 | S 4 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | E 6 | E 6 | S 14 | E 6 | E 6 | E 6 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 5 | 11 | 18 | 18 | 19 | 24 | 25 | 25 | 18 | 12 | 12 | 19 | 35 | 32 | 30 | 31 | 29 | 20 | 0 | 215 | 4 | 232 | 243 | 247 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:15AM0.84m | 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 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:33 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — |
mm | — | — | — | 1 | 1 | 1 | 2 | 3 | 2 | 1 | — | — | — | — | — | — | — | — | 1 | — | — | — | 1 | — |
Temp °C | 15 | 16 | 16 | 17 | 18 | 18 | 18 | 19 | 17 | 13 | 13 | 15 | 17 | 17 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 12 | 12 | 12 |
Feels °C | 13 | 14 | 13 | 15 | 16 | 17 | 17 | 19 | 18 | 9 | 9 | 10 | 12 | 12 | 11 | 11 | 9 | 10 | 9 | 6 | 6 | 5 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 8 | S 4 | SE 5 | SE 5 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | — | S 15 | S 14 | S 14 | S 14 | — |
| kJ | 5 | 5 | 18 | 18 | 18 | 17 | 16 | 11 | 18 | 7 | 8 | 19 | 35 | 32 | 30 | 31 | 29 | 20 | — | 4 | 4 | 4 | 4 | — |
Swell 2 Height (m) Direction Period (s) | SE 11 | SSE 11 | ESE 7 | — | ESE 7 | ESE 7 | SE 7 | SSE 10 | SE 8 | SSW 4 | SE 9 | SE 6 | SW 4 | — | — | — | — | — | — | E 14 | — | — | — | — |
| kJ | 5 | 11 | 5 | — | 5 | 5 | 2 | 10 | 11 | 7 | 12 | 9 | 1 | — | — | — | — | — | — | 4 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 8 | — | — | — | SE 9 | SSE 9 | SE 6 | SE 11 | SE 9 | SSW 4 | SSW 4 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 3 | — | — | — | 3 | 7 | 2 | 5 | 12 | 3 | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 3 | SE 3 | SE 3 | SE 4 | SE 4 | SSE 4 | SSE 4 | SSE 4 | SSW 4 | N 2 | NNE 3 | NE 4 | NE 5 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 |
| kJ | 5 | 3 | 5 | 10 | 19 | 24 | 25 | 25 | 15 | 1 | 5 | 18 | 31 | 44 | 52 | 59 | 60 | 69 | 136 | 215 | 200 | 232 | 243 | 247 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 865 | 865 | 865 | 176 | 862 | 862 | 282 | 120 | 38 | 165 | 498 | 621 | 632 | 680 | 757 | 680 | 635 | 663 | 663 | 764 | 764 | 605 | 1835 | 688 |
Best forecast wave conditions in Rhode Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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