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Surf Forecasts:
Dewata surfForecast / West / Sri Lanka
48hr Weather and Surf, issued 4 am Thursday 21 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 1PM is: 0.8m 16s primary swell from a South-southwest direction and 0.7m 10s secondary swell from a South direction, 1.5m 7s secondary swell from a West-southwest direction (forecast issued at 04:30am May 21). 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 91mm), heaviest during Thu night. Warm (max 28°C on Thu morning, min 27°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
S 13 | WSW 7 | WSW 7 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | WSW 7 | WSW 8 | WSW 8 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | |
276 | 237 | 237 | 229 | 322 | 310 | 275 | 268 | 449 | 344 | 371 | 449 | 534 | 487 | 481 | 435 | 376 | 449 | 449 | 443 | 366 | 356 | 331 | 257 | |
Wind (km/h) | ||||||||||||||||||||||||
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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 5:05AM0.44m | 5:09PM0.51m | 6:02AM0.41m | 5:48PM0.45m | 7:21AM0.39m | 6:38PM0.39m | ||||||||||||||||||
Low Tide | 10:40AM0.14m | 11:32PM0.11m | 11:30AM0.20m | 00:25AM0.14m | 12:41PM0.26m | |||||||||||||||||||
 | |  |  | | | | | | | | | | | | | | | | | | | |  | |
 | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:17 | — | — | — | — | — | — | — | 6:17 | — | — | — | — | — | — | — | 6:17 | — | — |
1 | 2 | 8 | 5 | 2 | 1 | 4 | 7 | 10 | 10 | 8 | 6 | 5 | 3 | 1 | 1 | 2 | 2 | 2 | 4 | 4 | 3 | 1 | — | |
Temp °C | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 |
30 | 30 | 30 | 29 | 30 | 30 | 30 | 29 | 28 | 29 | 30 | 30 | 29 | 28 | 30 | 28 | 28 | 28 | 29 | 29 | 28 | 29 | 30 | 30 | |
Swell 1 Height (m) Direction Period (s) | S 13 | S 10 | S 10 | S 10 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | WSW 7 | WSW 8 | SSW 14 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | WSW 7 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 |
 kJ | 276 | 100 | 102 | 104 | 322 | 310 | 275 | 268 | 449 | 344 | 353 | 449 | 534 | 487 | 481 | 435 | 376 | 279 | 449 | 443 | 366 | 356 | 331 | 257 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 16 | S 10 | S 10 | S 10 | S 10 | SSW 18 | SSW 14 | SSW 14 | SSW 16 | SW 13 | S 9 | S 10 | S 8 | SSE 9 | SSW 14 | S 8 | S 8 | S 7 | S 8 | S 8 | S 8 |
| kJ | 181 | 175 | 229 | 229 | 100 | 72 | 71 | 71 | 62 | 268 | 371 | 153 | 175 | 27 | 17 | 6 | 31 | 449 | 19 | 19 | 27 | 28 | 29 | 28 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 13 | SSW 13 | SSW 14 | S 20 | — | — | SSW 18 | SSW 18 | S 10 | SSW 18 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SE 9 | S 10 | S 10 | SSE 10 | S 10 | SE 10 | SE 9 | SE 9 | SSE 7 |
| kJ | 181 | 118 | 118 | 121 | 7 | — | — | 63 | 106 | 46 | 61 | 55 | 55 | 31 | 30 | 19 | 8 | 8 | 10 | 8 | 23 | 14 | 22 | 11 |
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 | W 7 | W 8 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | W 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 6 |
| kJ | 244 | 237 | 237 | 210 | 210 | 210 | 204 | 230 | 295 | 427 | 419 | 353 | 353 | 329 | 320 | 286 | 286 | 338 | 244 | 248 | 209 | 209 | 223 | 192 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 202 | 202 | 202 | 202 | 195 | 195 | 661 | 202 | 202 | 202 | 202 | 202 | 1947 | 733 | 1213 | 1513 | 202 | 202 | 202 | 202 | 201 | 202 | 866 | 866 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||||||
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