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 1AM is: 1.7m 15s primary swell from a South-southwest direction and 0.4m 10s secondary swell from a West direction, 1.2m 6s secondary swell from a West-southwest direction (forecast issued at 04:30pm August 20). 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 ForecastHeavy rain (total 44mm), heaviest during Thu night. Warm (max 28°C on Sat morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | ||||||||||||||||||
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 15 | SSW 15 | SSW 15 | S 15 | 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 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1869 | 1643 | 1581 | 1364 | 1310 | 1123 | 1108 | 965 | 951 | 811 | 799 | 407 | 562 | 708 | 980 | 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 | cross-on | cross | cross-on | cross |
High Tide | 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 | — | — | — | — | — | — |
 | — | 6:20 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:19 | — | — |
mm | 2 | 3 | 4 | 5 | 5 | 3 | 3 | 2 | 3 | 3 | 2 | 2 | 2 | 1 | — | 1 | 1 | 1 | 1 | — |
Temp °C | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 27 | 26 | 26 |
Feels °C | 28 | 28 | 27 | 27 | 27 | 27 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 29 | 29 | 29 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | S 15 | S 15 | S 14 | S 14 | SSW 14 | SSW 14 | S 11 | S 12 | S 12 | S 17 | S 15 | S 15 | S 15 | S 15 | S 14 |
| kJ | 1869 | 1643 | 1581 | 1364 | 1310 | 1123 | 1108 | 965 | 951 | 811 | 799 | 291 | 480 | 472 | 980 | 544 | 636 | 636 | 627 | 585 |
Swell 2 Height (m) Direction Period (s) | — | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | S 20 | S 18 | S 19 | SSW 14 | S 17 | S 17 | S 11 | S 11 | S 11 | S 10 | S 10 | S 10 |
| kJ | — | 47 | 50 | 31 | 31 | 31 | 31 | 30 | 127 | 240 | 343 | 407 | 562 | 708 | 332 | 274 | 269 | 264 | 202 | 186 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | S 24 | W 10 | S 21 | S 22 | S 18 | W 9 | W 9 | S 18 | SSW 13 | SSW 13 | SE 7 | S 18 | S 26 | S 26 | S 24 | S 24 |
| kJ | — | — | — | — | 11 | 51 | 35 | 36 | 55 | 43 | 27 | 332 | 59 | 59 | 2 | 221 | 13 | 13 | 44 | 97 |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 6 | W 6 | W 6 | WSW 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 |
| kJ | 114 | 118 | 94 | 98 | 102 | 82 | 67 | 67 | 80 | 64 | 52 | 53 | 52 | 66 | 68 | 74 | 78 | 78 | 75 | 73 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 670 | 1801 | 1205 | 193 | 875 | 193 | 193 | 740 | 875 | 374 | 193 | 194 | 194 | 194 | 193 | 194 | 192 | 374 | 764 | 6 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||
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