Surf Forecasts:
How big are the waves at Greenhill today (21 Jul):
- Morning surf: Morning surf (21 Jul, local time) - 2.5ft (0.8m), 7s period with S swell.
- Afternoon surf: Afternoon surf (21 Jul, local time) - 4.5ft (1.3m), 5s period with S swell.
- Evening surf: Evening surf (21 Jul, local time) - 5.5ft (1.7m), 6s period with S swell.
The current surf forecast for Greenhill at 5PM is: 1.5m 6s primary swell from a South direction and 0.1m 11s secondary swell from a Southeast direction (forecast issued at 01:00pm July 21). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jul) | 2.5ft (0.8m) | 7s |
| Afternoon (21 Jul) | 4.5ft (1.3m) | 5s |
| Evening (21 Jul) | 5.5ft (1.7m) | 6s |
Table - waves today at Greenhill. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 18mm), heaviest on Tue afternoon. Warm (max 25°C on Wed afternoon, min 16°C on Wed night). Winds decreasing (fresh winds from the WSW on Tue night, calm by Thu night). | |||||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||
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) | S 7 | S 5 | S 6 | S 6 | S 7 | S 7 | SSW 7 | SSW 8 | S 8 | S 9 | S 9 | SSW 9 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | SSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 26 | 73 | 160 | 206 | 293 | 229 | 392 | 636 | 513 | 663 | 726 | 897 | 554 | 493 | 449 | 389 | 271 | 212 | 127 | 134 | 109 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-off | cross-off | cross-off | off | off | cross | cross-on | cross-on | glassy |
High Tide | 2:21PM1.16m | 2:33AM0.95m | 3:15PM1.13m | 3:27AM0.90m | 4:10PM1.12m | ||||||||||||||||
Low Tide | 8:43PM0.34m | 8:38AM0.28m | 9:41PM0.38m | 9:29AM0.31m | 10:39PM0.39m | ||||||||||||||||
 |  |  |  |  | |  | |  | | | | |  | | | | | | |  | |
 | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | — | 8:14 | — | — | — | — | — | — | — | 8:13 | — | — | — | — | — | — | — | 8:12 | — |
mm | — | 1 | 8 | 4 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 22 | 22 | 21 | 22 | 21 | 22 | 23 | 25 | 25 | 25 | 21 | 18 | 16 | 18 | 22 | 23 | 21 | 20 | 19 |
Feels °C | 20 | 20 | 22 | 22 | 19 | 19 | 19 | 20 | 22 | 23 | 24 | 25 | 18 | 15 | 14 | 15 | 19 | 21 | 18 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | S 7 | — | SE 11 | S 11 | SSE 8 | SE 8 | — | — | — | — | — | S 9 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | SSW 8 |
| kJ | 24 | — | 5 | 3 | 7 | 3 | — | — | — | — | — | 650 | 554 | 493 | 449 | 389 | 271 | 212 | 127 | 134 | 109 |
Swell 2 Height (m) Direction Period (s) | SE 8 | — | — | — | SE 11 | SE 10 | — | — | — | — | — | — | — | — | — | — | — | NNE 3 | SE 7 | SE 7 | SE 7 |
| kJ | 3 | — | — | — | 5 | 4 | — | — | — | — | — | — | — | — | — | — | — | 1 | 59 | 49 | 49 |
Swell 3 Height (m) Direction Period (s) | S 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | S 5 | S 6 | S 6 | S 7 | S 7 | SSW 7 | SSW 8 | S 8 | S 9 | S 9 | SSW 9 | — | NNW 2 | NNW 2 | NNW 2 | NNE 3 | — | — | — | — |
| kJ | 26 | 73 | 160 | 206 | 293 | 229 | 392 | 636 | 513 | 663 | 726 | 897 | — | 1 | 1 | 1 | 1 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1170 | 1170 | 1170 | 250 | 354 | 430 | 12 | 621 | 225 | 115 | 12 | 11 | 7 | 0 | 0 | 0 | 0 | 9 | 12 | 12 | 0 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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