Surf Forecasts:
How big are the waves at The Rock today (12 Aug):
- Morning surf: Morning surf (12 Aug, local time) - 3.5ft (1.0m), 16s period with S swell.
- Afternoon surf: Afternoon surf (12 Aug, local time) - 3ft (0.9m), 16s period with SSW swell.
- Evening surf: Evening surf (12 Aug, local time) - 4ft (1.2m), 11s period with S swell.
The current surf forecast for The Rock at 5AM is: 1.0m 17s primary swell from a South direction and 1.2m 12s secondary swell from a South direction, 0.9m 6s secondary swell from a West direction (forecast issued at 10:30pm August 11). The wind direction is predicted to be cross-onshore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Aug) | 3.5ft (1.0m) | 16s |
| Afternoon (12 Aug) | 3ft (0.9m) | 16s |
| Evening (12 Aug) | 4ft (1.2m) | 11s |
Table - waves today at The Rock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 52mm), heaviest during Wed night. Warm (max 28°C on Fri afternoon, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | ||||||||||||||||
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 18 | S 18 | S 18 | S 17 | S 16 | S 16 | SSW 16 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | SSW 14 | S 10 |
Wave Graph  | ||||||||||||||||||
 kJ | 909 | 899 | 733 | 552 | 535 | 529 | 427 | 418 | 329 | 326 | 287 | 292 | 292 | 287 | 229 | 326 | 189 | 208 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross |
High Tide | 2:26AM0.46m | 2:23PM0.54m | 2:56AM0.51m | 2:52PM0.55m | ||||||||||||||
Low Tide | 8:19PM0.05m | 8:15AM0.09m | 8:45PM0.01m | 8:50AM0.06m | 9:11PM-0.02m | |||||||||||||
 | | | |  | | | | | | | | | | | | |  | |
 | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — |
mm | 2 | 4 | 4 | 3 | 2 | 2 | 3 | 3 | 3 | 4 | 5 | 5 | 2 | 1 | 2 | 1 | 2 | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 29 | 29 | 29 | 27 | 28 | 28 | 29 | 28 | 28 | 29 | 27 | 27 | 29 | 28 | 28 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | S 18 | S 12 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | W 9 | S 11 | S 11 | S 11 | W 8 | S 10 |
| kJ | 909 | 403 | 464 | 389 | 389 | 380 | 367 | 418 | 326 | 326 | 287 | 292 | 181 | 287 | 229 | 326 | 140 | 208 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 18 | S 18 | S 17 | S 16 | S 16 | SSW 16 | SSW 16 | SSW 16 | W 7 | WSW 6 | SSW 15 | S 11 | W 8 | SSW 15 | W 8 | S 10 | W 8 |
| kJ | 409 | 899 | 733 | 552 | 535 | 529 | 427 | 337 | 329 | 70 | 85 | 222 | 292 | 173 | 169 | 140 | 175 | 140 |
Swell 3 Height (m) Direction Period (s) | W 6 | W 6 | W 6 | W 9 | W 9 | W 9 | S 12 | W 9 | W 9 | SSW 15 | SSW 15 | W 9 | SSW 14 | SSW 15 | S 6 | S 6 | SSW 14 | S 13 |
| kJ | 43 | 54 | 44 | 60 | 60 | 62 | 101 | 63 | 61 | 292 | 222 | 55 | 165 | 167 | 25 | 25 | 189 | 90 |
Wind waves Height (m) Direction Period (s) | W 10 | — | W 10 | W 6 | W 6 | WSW 6 | W 6 | W 7 | W 6 | SSW 6 | SW 5 | WSW 6 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 |
| kJ | 228 | — | 326 | 62 | 98 | 108 | 143 | 86 | 81 | 40 | 29 | 70 | 204 | 173 | 143 | 177 | 169 | 169 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 15 | 15 | 22 | 369 | 193 | 669 | 875 | 875 | 875 | 875 | 875 | 461 | 15 | 669 | 1348 | 1205 | 193 | 193 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||
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