Surf Forecasts:
How big are the waves at The Rock today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 7ft (2.1m), 16s period with SSW swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 6ft (1.9m), 16s period with SSW swell.
- Evening surf: Evening surf (20 Aug, local time) - 6ft (1.8m), 15s period with SSW swell.
The current surf forecast for The Rock at 11AM is: 2.0m 16s primary swell from a South direction and 0.6m 9s secondary swell from a West direction, 1.3m 6s secondary swell from a West-southwest direction (forecast issued at 04:30am August 20). The wind direction is predicted to be cross-onshore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 7ft (2.1m) | 16s |
| Afternoon (20 Aug) | 6ft (1.9m) | 16s |
| Evening (20 Aug) | 6ft (1.8m) | 15s |
Table - waves today at The Rock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 52mm), heaviest during Fri night. Warm (max 28°C on Sat morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 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) | SSW 16 | SSW 16 | SSW 16 | S 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | S 15 | S 15 | S 14 | S 14 | SSW 14 | S 14 | SSW 14 | S 17 | S 17 | S 17 | S 15 | S 15 | S 15 | S 15 | S 14 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 2684 | 2398 | 2160 | 2088 | 1869 | 1643 | 1581 | 1520 | 1310 | 1123 | 1108 | 965 | 951 | 811 | 674 | 407 | 562 | 708 | 839 | 544 | 636 | 636 | 627 | 585 |
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-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:55AM0.43m | 5:26PM0.34m | 6:22AM0.38m | 5:04PM0.29m | 7:36AM0.33m | |||||||||||||||||||
Low Tide | 12:03PM0.21m | 11:32PM0.17m | 12:40PM0.26m | 11:10PM0.22m | 8:20PM0.22m | |||||||||||||||||||
 | |  | | | | | | | | | | | | | | | |  | | | | | | |
 | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:19 | — | — |
mm | 4 | 5 | 3 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 3 | 2 | 3 | 3 | 3 | 4 | 5 | 1 | — | — | — | 1 | 1 | 1 |
Temp °C | 26 | 26 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 27 | 26 | 26 |
Feels °C | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 29 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | S 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | S 15 | S 15 | S 14 | S 14 | SSW 14 | S 14 | S 11 | S 12 | S 12 | S 17 | S 11 | S 11 | S 15 | S 15 | S 14 |
| kJ | 2684 | 2398 | 2160 | 2088 | 1869 | 1643 | 1581 | 1520 | 1310 | 1123 | 1108 | 965 | 951 | 811 | 674 | 291 | 480 | 472 | 839 | 332 | 326 | 636 | 627 | 585 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | W 9 | W 9 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | S 18 | W 6 | SSW 14 | S 17 | S 17 | S 11 | S 15 | S 15 | S 10 | S 10 | S 10 |
| kJ | 221 | 221 | 285 | 63 | 63 | 67 | 50 | 31 | 31 | 31 | 31 | 30 | 29 | 240 | 49 | 407 | 562 | 708 | 332 | 544 | 636 | 320 | 214 | 186 |
Swell 3 Height (m) Direction Period (s) | W 8 | W 9 | W 9 | — | — | — | — | — | S 24 | S 24 | S 21 | S 22 | S 20 | W 9 | S 19 | W 6 | W 9 | SSW 13 | W 6 | S 18 | S 26 | S 26 | S 24 | W 6 |
| kJ | 52 | 56 | 64 | — | — | — | — | — | 11 | 11 | 35 | 36 | 127 | 45 | 343 | 38 | 40 | 59 | 53 | 221 | 13 | 13 | 44 | 54 |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | — | WNW 6 | W 5 | W 6 | WNW 6 | W 6 | W 6 | W 6 | W 6 | W 6 |
| kJ | 95 | 98 | 98 | 98 | 98 | 114 | 94 | 82 | 80 | 82 | 80 | 67 | 67 | 62 | — | 50 | 29 | 41 | 56 | 57 | 61 | 61 | 71 | 71 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 193 | 193 | 193 | 192 | 1906 | 1801 | 193 | 193 | 193 | 369 | 194 | 669 | 875 | 875 | 22 | 193 | 374 | 369 | 193 | 193 | 670 | 374 | 764 | 193 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||||||
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