Surf Forecasts:
How big are the waves at The Rock today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 5ft (1.6m), 15s period with S swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 5ft (1.5m), 14s period with S swell.
- Evening surf: Evening surf (21 Aug, local time) - 4.5ft (1.4m), 14s period with SSW swell.
The current surf forecast for The Rock at 3PM is: 1.5m 14s primary swell from a South direction and 0.4m 10s secondary swell from a West direction, 1.1m 6s secondary swell from a West direction (forecast issued at 10:30am August 21). The wind direction is predicted to be cross-onshore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 5ft (1.6m) | 15s |
| Afternoon (21 Aug) | 5ft (1.5m) | 14s |
| Evening (21 Aug) | 4.5ft (1.4m) | 14s |
Table - waves today at The Rock. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 17mm), heaviest on Fri morning. Warm (max 28°C on Sat morning, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||||||||
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) | S 15 | S 14 | S 14 | SSW 14 | SSW 14 | SSW 14 | S 17 | S 17 | S 17 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 1108 | 965 | 951 | 811 | 799 | 407 | 562 | 708 | 980 | 544 | 636 | 636 | 627 | 585 | 480 | 487 | 480 | 736 | 600 | 591 | 582 | 498 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:22AM0.38m | 5:04PM0.29m | 7:36AM0.33m | 2:42AM0.29m | 12:36PM0.37m | |||||||||||||||||
Low Tide | 12:40PM0.26m | 11:10PM0.22m | 8:20PM0.22m | 6:07AM0.27m | 7:39PM0.17m | |||||||||||||||||
 | | | |  | | | |  | | | |  |  | | | | | | | | | |
 | 6:03 | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — |
mm | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | — | — | — | 1 | — | — | — | — | — | 1 | 1 | 1 | — | — |
Temp °C | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 29 | 28 | 28 | 29 | 28 | 28 | 28 | 27 | 29 | 29 | 29 | 28 | 29 | 28 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | S 15 | S 14 | S 14 | SSW 14 | SSW 14 | S 11 | S 12 | S 12 | S 17 | S 11 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 |
| kJ | 1108 | 965 | 951 | 811 | 799 | 284 | 411 | 404 | 980 | 274 | 636 | 636 | 627 | 585 | 480 | 487 | 480 | 736 | 600 | 591 | 582 | 498 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | S 18 | S 19 | SSW 14 | S 17 | S 17 | S 11 | S 15 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 21 | S 21 | S 20 | S 20 | S 19 |
| kJ | 31 | 30 | 29 | 240 | 343 | 407 | 562 | 708 | 274 | 544 | 269 | 264 | 206 | 151 | 151 | 151 | 151 | 233 | 218 | 276 | 373 | 361 |
Swell 3 Height (m) Direction Period (s) | S 21 | S 22 | S 20 | W 9 | WSW 9 | S 18 | SSW 13 | SSW 13 | — | S 18 | S 26 | S 26 | S 24 | S 24 | S 24 | S 22 | S 21 | WNW 11 | — | WNW 10 | S 16 | W 10 |
| kJ | 35 | 36 | 127 | 43 | 28 | 332 | 59 | 59 | — | 221 | 13 | 13 | 44 | 97 | 173 | 83 | 233 | 12 | — | 11 | 20 | 8 |
Wind waves Height (m) Direction Period (s) | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | WSW 6 | W 6 | W 6 | W 6 | W 6 | WSW 6 |
| kJ | 80 | 80 | 80 | 64 | 52 | 54 | 52 | 80 | 85 | 91 | 94 | 95 | 95 | 89 | 76 | 89 | 95 | 89 | 86 | 85 | 71 | 56 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 369 | 740 | 875 | 374 | 764 | 374 | 193 | 193 | 193 | 193 | 194 | 374 | 374 | 193 | 193 | 193 | 193 | 194 | 763 | 763 | 763 | 193 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||||
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