Surf Forecasts:
How big are the waves at The Rock today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 1.5ft (0.4m), 22s period with SSW swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 3ft (0.9m), 22s period with SSW swell.
- Evening surf: Evening surf (17 Aug, local time) - 4ft (1.2m), 21s period with SSW swell.
The current surf forecast for The Rock at 8AM is: 0.8m 10s primary swell from a South direction and 0.6m 9s secondary swell from a West direction, 1.1m 6s secondary swell from a West-southwest direction (forecast issued at 04:30am August 17). The wind direction is predicted to be cross-onshore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 1.5ft (0.4m) | 22s |
| Afternoon (17 Aug) | 3ft (0.9m) | 22s |
| Evening (17 Aug) | 4ft (1.2m) | 21s |
Table - waves today at The Rock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 33mm), heaviest during Mon night. Warm (max 28°C on Mon morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||||||||
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) | S 11 | S 10 | S 10 | SSW 22 | SSW 22 | SSW 22 | SSW 21 | SSW 21 | SSW 21 | SSW 20 | SSW 19 | SSW 19 | SSW 19 | SSW 19 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 18 | SSW 18 | SSW 17 | SSW 17 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 181 | 177 | 141 | 270 | 680 | 839 | 1156 | 1851 | 2330 | 2389 | 3184 | 3448 | 3412 | 3306 | 2770 | 2678 | 2897 | 2864 | 2864 | 2832 | 2798 | 2798 | 2735 | 2783 |
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 | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross |
High Tide | 4:45AM0.54m | 4:34PM0.48m | 5:09AM0.51m | 4:56PM0.44m | 5:32AM0.47m | 5:15PM0.39m | ||||||||||||||||||
Low Tide | 10:46AM0.09m | 10:46PM0.03m | 11:11AM0.13m | 11:05PM0.07m | 11:36AM0.16m | 11:22PM0.12m | ||||||||||||||||||
 | |  |  |  | |  | | | | | | | | | | | | | | | |  | | |
 | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:21 | — | — | — | — | — | — | — | 6:21 | — | — | — | — | — | — | — | 6:21 | — | — |
mm | — | — | 1 | — | — | 2 | 5 | 2 | 5 | 6 | 3 | 1 | — | — | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — |
Temp °C | 26 | 26 | 27 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 26 |
Feels °C | 28 | 27 | 28 | 29 | 29 | 29 | 28 | 28 | 27 | 28 | 29 | 29 | 28 | 28 | 30 | 30 | 28 | 28 | 29 | 29 | 28 | 28 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | S 10 | S 10 | SSW 22 | SSW 22 | SSW 21 | SSW 21 | SSW 21 | SSW 20 | SSW 19 | SSW 19 | SSW 19 | SSW 19 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 18 | SSW 18 | SSW 17 | SSW 17 |
| kJ | 181 | 177 | 141 | 138 | 680 | 839 | 1156 | 1851 | 2330 | 2389 | 3184 | 3448 | 3412 | 3306 | 2770 | 2678 | 2897 | 2864 | 2864 | 2832 | 2798 | 2798 | 2735 | 2783 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | W 9 | W 9 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | W 6 | WSW 6 | S 21 | SSE 9 | SSE 9 | WSW 9 | W 9 | S 18 | SW 16 | WSW 9 |
| kJ | 67 | 65 | 63 | 61 | 135 | 100 | 128 | 98 | 96 | 71 | 85 | 83 | 81 | 80 | 115 | 115 | 323 | 47 | 55 | 62 | 39 | 1615 | 795 | 25 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 22 | SSW 22 | W 9 | W 9 | W 9 | SSW 14 | SSW 14 | SSW 15 | SW 12 | SW 12 | — | — | S 10 | S 10 | SSE 9 | — | — | SE 9 | SSE 9 | — | — | — |
| kJ | 70 | 70 | 98 | 270 | 61 | 63 | 85 | 140 | 120 | 121 | 37 | 37 | — | — | 44 | 46 | 56 | — | — | 39 | 31 | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 6 | WSW 6 | WSW 5 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | W 6 | — | W 6 | WSW 6 | WSW 6 | WSW 6 | W 6 | W 6 | W 6 | W 6 | W 6 |
| kJ | 77 | 72 | 71 | 66 | 69 | 69 | 52 | 94 | 101 | 121 | 155 | 165 | 170 | 139 | — | 148 | 115 | 112 | 108 | 85 | 101 | 122 | 104 | 91 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 193 | 875 | 193 | 192 | 875 | 875 | 193 | 193 | 193 | 193 | 186 | 186 | 763 | 192 | 193 | 193 | 193 | 193 | 193 | 189 | 740 | 192 | 186 | 192 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||||||
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