Surf Forecasts:
How big are the waves at The Rock today (11 Aug):
- Morning surf: Morning surf (11 Aug, local time) - 3.5ft (1.1m), 20s period with S swell.
- Afternoon surf: Afternoon surf (11 Aug, local time) - 4ft (1.2m), 19s period with S swell.
- Evening surf: Evening surf (11 Aug, local time) - 4ft (1.2m), 18s period with S swell.
The current surf forecast for The Rock at 3AM is: 1.0m 20s primary swell from a South direction and 1.4m 13s secondary swell from a South direction, 1.1m 9s secondary swell from a West direction (forecast issued at 10:30pm August 10). The wind direction is predicted to be cross-shore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Aug) | 3.5ft (1.1m) | 20s |
| Afternoon (11 Aug) | 4ft (1.2m) | 19s |
| Evening (11 Aug) | 4ft (1.2m) | 18s |
Table - waves today at The Rock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 38mm), heaviest during Mon night. Warm (max 27°C on Tue morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||||
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 14 | S 14 | S 21 | S 20 | S 20 | S 19 | S 19 | S 18 | S 18 | S 18 | S 18 | S 17 | S 16 | S 16 | SSW 16 | S 11 | SSW 16 | S 11 |
Wave Graph  | ||||||||||||||||||
 kJ | 855 | 818 | 874 | 799 | 932 | 922 | 1059 | 930 | 909 | 899 | 733 | 552 | 535 | 529 | 427 | 350 | 329 | 326 |
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 | 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 |
High Tide | 1:54AM0.40m | 1:51PM0.51m | 2:26AM0.46m | 2:23PM0.54m | ||||||||||||||
Low Tide | 7:53PM0.10m | 7:36AM0.13m | 8:19PM0.05m | 8:15AM0.09m | 8:45PM0.01m | |||||||||||||
 | | | |  | | | | | | | | | | | |  | | |
 | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — |
mm | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | — | 1 |
Temp °C | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 29 | 29 | 28 | 28 | 29 | 28 | 28 | 27 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 18 | S 12 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 |
| kJ | 855 | 818 | 694 | 683 | 653 | 546 | 521 | 496 | 909 | 403 | 464 | 389 | 389 | 380 | 369 | 350 | 274 | 326 |
Swell 2 Height (m) Direction Period (s) | W 9 | W 9 | S 21 | S 20 | S 20 | S 19 | S 19 | S 18 | S 12 | S 18 | S 18 | W 9 | W 9 | W 9 | SSW 16 | W 9 | W 9 | W 9 |
| kJ | 159 | 134 | 874 | 799 | 932 | 922 | 1059 | 930 | 409 | 899 | 733 | 175 | 170 | 202 | 427 | 162 | 159 | 159 |
Swell 3 Height (m) Direction Period (s) | SSW 22 | SSW 21 | W 9 | W 9 | W 9 | SSW 13 | W 9 | SSW 18 | W 10 | W 10 | W 6 | S 17 | S 16 | S 16 | S 12 | SSW 16 | SSW 16 | SSW 15 |
| kJ | 616 | 599 | 134 | 132 | 168 | 282 | 63 | 399 | 226 | 226 | 31 | 552 | 535 | 529 | 101 | 337 | 329 | 292 |
Wind waves Height (m) Direction Period (s) | W 9 | — | W 9 | — | W 9 | W 9 | W 6 | W 9 | W 10 | W 10 | W 6 | W 10 | — | W 10 | W 9 | WNW 9 | — | — |
| kJ | 217 | — | 212 | — | 171 | 164 | 42 | 173 | 320 | 230 | 52 | 279 | — | 225 | 201 | 259 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 15 | 22 | 374 | 369 | 369 | 669 | 303 | 369 | 374 | 764 | 369 | 369 | 369 | 669 | 875 | 875 | 15 | 15 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||
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