Surf Forecasts:
How big are the waves at Rivermouth (Hikkaduwa) today (20 Oct):
- Morning surf: Morning surf (20 Oct, local time) - 5ft (1.6m), 15s period with S swell.
- Afternoon surf: Afternoon surf (20 Oct, local time) - 5ft (1.5m), 14s period with S swell.
- Evening surf: Evening surf (20 Oct, local time) - 4.5ft (1.4m), 14s period with SSW swell.
The current surf forecast for Rivermouth (Hikkaduwa) at 12AM is: 1.6m 16s primary swell from a South direction and 0.5m 7s secondary swell from a West direction (forecast issued at 04:30pm October 19). The wind direction is predicted to be cross-onshore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Oct) | 5ft (1.6m) | 15s |
| Afternoon (20 Oct) | 5ft (1.5m) | 14s |
| Evening (20 Oct) | 4.5ft (1.4m) | 14s |
Table - waves today at Rivermouth (Hikkaduwa). (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 35mm), heaviest during Wed night. Warm (max 29°C on Mon afternoon, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Mon 19 | Tuesday 20 | Wednesday 21 | ||||||||||||||||||
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 17 | S 16 | S 16 | S 16 | SSW 16 | S 15 | S 15 | S 15 | S 14 | S 14 | SSW 14 | SSW 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1739 | 1564 | 1515 | 1496 | 1038 | 1386 | 1154 | 978 | 931 | 925 | 799 | 777 | 618 | 506 | 498 | 498 | 414 | 408 | 368 | 290 |
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 | 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 | cross-on |
High Tide | 10:14AM0.39m | 00:13AM0.39m | 11:29AM0.45m | |||||||||||||||||
Low Tide | 6:48PM0.27m | 5:49PM0.23m | 5:39AM0.29m | 6:00PM0.19m | ||||||||||||||||
 |  |  | |  | | | |  | |  | | |  |  | | | | | | |
 | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — |
 | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 2 | — | 1 | 1 | 1 | 4 | 5 | 3 |
Temp °C | 29 | 28 | 28 | 28 | 27 | 27 | 28 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 27 | 26 |
Feels °C | 31 | 30 | 31 | 31 | 30 | 30 | 31 | 30 | 30 | 30 | 31 | 30 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | S 17 | S 16 | S 16 | S 16 | SSW 16 | S 15 | S 15 | S 15 | S 14 | S 14 | SSW 14 | SSW 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 |
| kJ | 1739 | 1564 | 1515 | 1496 | 1038 | 1386 | 1154 | 978 | 931 | 925 | 799 | 777 | 618 | 506 | 498 | 498 | 414 | 408 | 368 | 290 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 7 | W 7 | W 7 | S 9 | W 7 | W 7 | WSW 7 | S 26 | S 24 | WSW 7 | WSW 7 | SSW 23 | SSW 21 | SSW 21 | SSW 21 | SSW 20 | SSW 19 | SSW 19 | SSW 19 |
| kJ | 41 | 40 | 40 | 27 | 99 | 25 | 24 | 15 | 13 | 11 | 9 | 9 | 52 | 153 | 260 | 178 | 218 | 295 | 295 | 212 |
Swell 3 Height (m) Direction Period (s) | SE 7 | WSW 7 | WSW 7 | WSW 7 | W 7 | SE 8 | WSW 7 | S 26 | S 20 | SW 20 | SSW 24 | SSW 24 | WSW 6 | SW 18 | SW 18 | SW 18 | W 11 | W 11 | W 11 | W 10 |
| kJ | 13 | 43 | 30 | 30 | 26 | 14 | 16 | 13 | 8 | 15 | 54 | 54 | 8 | 13 | 12 | 49 | 10 | 21 | 20 | 31 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 7 | W 7 | W 7 | W 4 | W 4 | W 4 | W 4 | W 4 | WSW 4 | WSW 4 | WSW 5 | WSW 5 | W 5 |
| kJ | — | — | — | — | — | — | — | 23 | 23 | 32 | 7 | 8 | 12 | 12 | 12 | 14 | 19 | 38 | 42 | 42 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 751 | 19 | 19 | 19 | 19 | 15 | 15 | 54 | 859 | 170 | 19 | 19 | 54 | 19 | 209 | 209 | 209 | 19 | 19 | 19 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||
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