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Surf Forecasts:
Dewata surfForecast / West / Sri Lanka
48hr Weather and Surf, issued 4 pm Wednesday 20 May 2026 +0530Forecast update in hr min s Forecast update imminent
Dewata surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dewata sea temperature is
29.2° C
(Which is normal for this time of year)How big are the waves at Dewata today?
The current surf forecast for Dewata at 12AM is: 0.9m 13s primary swell from a South-southwest direction and 0.5m 17s secondary swell from a South-southwest direction, 1.6m 7s secondary swell from a West-southwest direction (forecast issued at 04:30pm May 20). The wind direction is predicted to be cross-onshore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 5ft (1.6m) | 7s |
| Afternoon (21 May) | 2.5ft (0.8m) | 16s |
| Evening (21 May) | 2.5ft (0.8m) | 15s |
Table - waves today at Dewata. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 80mm), heaviest during Thu morning. Warm (max 28°C on Wed afternoon, min 26°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | 11 AM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
WSW 7 | WSW 7 | S 13 | SSW 13 | WSW 7 | WSW 7 | WSW 7 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | WSW 7 | SSW 16 | SSW 16 | WSW 7 | WSW 7 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | |
198 | 214 | 366 | 299 | 244 | 244 | 233 | 229 | 322 | 310 | 275 | 268 | 268 | 449 | 371 | 371 | 534 | 487 | 446 | 435 | 376 | 371 | 371 | 366 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | 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 | cross-on | cross-on | cross-on | cross-on | |
High Tide | 4:33PM0.57m | 5:05AM0.44m | 5:09PM0.51m | 6:02AM0.41m | 5:48PM0.45m | 7:21AM0.39m | ||||||||||||||||||
Low Tide | 10:47PM0.08m | 10:40AM0.14m | 11:32PM0.11m | 11:30AM0.20m | 00:25AM0.14m | |||||||||||||||||||
 | |  | | | |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — |
 | — | 6:16 | — | — | — | — | — | — | — | 6:17 | — | — | — | — | — | — | — | 6:17 | — | — | — | — | — | 6:17 |
3 | 3 | 2 | 2 | 1 | 5 | 7 | 6 | 5 | 1 | 2 | 4 | 4 | 4 | 4 | 5 | 5 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | |
Temp °C | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 27 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 |
29 | 29 | 31 | 30 | 30 | 29 | 29 | 27 | 30 | 30 | 31 | 31 | 30 | 29 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 29 | |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 10 | S 13 | SSW 13 | SSW 13 | S 10 | S 10 | S 10 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 16 | SW 7 | WSW 7 | SSW 15 | SSW 14 | S 7 | S 7 |
 kJ | 186 | 128 | 366 | 299 | 232 | 100 | 104 | 104 | 322 | 310 | 275 | 268 | 268 | 449 | 371 | 371 | 534 | 487 | 342 | 281 | 376 | 371 | 112 | 112 |
Swell 2 Height (m) Direction Period (s) | S 10 | SSW 14 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 18 | SSW 18 | SSW 16 | SW 13 | SSW 16 | SSW 16 | SSW 16 | S 7 | S 7 | SSW 14 | SSW 14 |
| kJ | 98 | 138 | 178 | 121 | 181 | 175 | 229 | 229 | 100 | 72 | 73 | 71 | 70 | 104 | 61 | 153 | 175 | 203 | 446 | 435 | 78 | 108 | 371 | 366 |
Swell 3 Height (m) Direction Period (s) | SSW 18 | SSW 18 | SSW 18 | SW 18 | SSW 16 | SSW 13 | SSW 13 | SSW 14 | S 20 | — | — | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSE 9 | SSE 9 | SSE 9 | S 10 | S 7 | S 10 | — | SSE 10 | S 10 |
| kJ | 124 | 123 | 207 | 150 | 181 | 118 | 118 | 121 | 7 | — | — | 63 | 62 | 104 | 102 | 33 | 32 | 32 | 18 | 76 | 9 | — | 10 | 2 |
Wind waves Height (m) Direction Period (s) | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 |
| kJ | 198 | 214 | 230 | 200 | 244 | 244 | 233 | 200 | 227 | 227 | 233 | 240 | 240 | 240 | 316 | 345 | 363 | 342 | 385 | 408 | 294 | 292 | 252 | 203 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 201 | 201 | 866 | 202 | 202 | 202 | 202 | 195 | 201 | 201 | 202 | 202 | 202 | 202 | 202 | 202 | 202 | 733 | 752 | 1213 | 202 | 733 | 733 | 733 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||||||
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