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Surf Forecasts:
Dewata surfForecast / West / Sri Lanka
48hr Weather and Surf, issued 10 pm Tuesday 12 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
30.0° C
(Which is slightly warmer than usual)How big are the waves at Dewata today?
The current surf forecast for Dewata at 1AM is: 1.2m 14s primary swell from a South-southwest direction and 0.3m 9s secondary swell from a Southeast direction, 1.6m 8s secondary swell from a Southwest direction (forecast issued at 10:30pm May 12). The wind direction is predicted to be cross-onshore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 3.5ft (1.0m) | 14s |
| Afternoon (13 May) | 6.5ft (2.0m) | 9s |
| Evening (13 May) | 6ft (1.9m) | 9s |
Table - waves today at Dewata. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 147mm), heaviest during Thu night. Warm (max 28°C on Tue night, min 23°C on Thu night). Winds increasing (calm on Wed afternoon, fresh winds from the NW by Thu night). | ||||||||||||||||||||||||
Tue 12 | Wednesday 13 | Thursday 14 | Friday 15 | |||||||||||||||||||||
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 | 2 PM | 5 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SW 8 | SW 9 | SW 9 | SW 9 | SSW 9 | SW 8 | SW 13 | SW 14 | SW 14 | SSW 14 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | |
715 | 639 | 631 | 529 | 443 | 481 | 580 | 607 | 607 | 608 | 490 | 1327 | 1494 | 1657 | 596 | 429 | 470 | 589 | 643 | 684 | 684 | 746 | 746 | 706 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | glassy | 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 | |
High Tide | 11:42PM0.40m | 12:21PM0.55m | 00:29AM0.43m | 12:58PM0.60m | 1:09AM0.46m | 1:34PM0.65m | ||||||||||||||||||
Low Tide | 6:30PM0.22m | 5:42AM0.16m | 6:58PM0.17m | 6:16AM0.11m | 7:25PM0.12m | 6:50AM0.07m | ||||||||||||||||||
 | | | |  | |  |  |  | | | | | | | | | | |  |  |  | | | |
 | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — |
 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 |
7 | 10 | 6 | 9 | 9 | 6 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 3 | 3 | 3 | 5 | 10 | 36 | 15 | 14 | — | — | 1 | |
Temp °C | 28 | 27 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 25 | 23 | 26 | 27 | 27 | 27 |
31 | 30 | 29 | 29 | 29 | 28 | 28 | 32 | 30 | 32 | 30 | 28 | 29 | 29 | 29 | 29 | 29 | 27 | 25 | 23 | 26 | 27 | 27 | 28 | |
Swell 1 Height (m) Direction Period (s) | SW 8 | SSW 15 | SSW 14 | SSW 14 | SSW 8 | SW 8 | SW 9 | SW 9 | SW 9 | SSW 9 | SW 8 | SW 13 | SW 14 | SW 14 | SSW 14 | S 14 | SSW 14 | S 13 | SSW 14 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
 kJ | 296 | 639 | 631 | 529 | 384 | 481 | 580 | 607 | 607 | 608 | 490 | 1327 | 1494 | 1657 | 596 | 383 | 304 | 366 | 304 | 299 | 327 | 336 | 336 | 327 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SE 9 | SE 9 | SE 9 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | S 16 | S 16 | S 15 | S 15 | SE 9 | SE 9 | SSW 16 | SSW 16 | S 8 | SE 8 | S 18 | S 10 | SE 10 | SE 10 | SE 10 |
| kJ | 715 | 12 | 12 | 12 | 443 | 437 | 351 | 322 | 307 | 135 | 134 | 221 | 215 | 3 | 3 | 149 | 149 | 1 | 3 | 25 | 2 | 4 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | ESE 9 | — | — | SW 20 | SW 20 | S 10 | SSE 10 | SSE 10 | S 15 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SE 8 | SE 8 | SE 9 | SE 8 | E 11 | SE 11 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 10 |
| kJ | 8 | — | — | 15 | 15 | 104 | 9 | 9 | 71 | 31 | 62 | 31 | 31 | 3 | 3 | 3 | 3 | 2 | 5 | 4 | 4 | 10 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | WSW 8 | SW 7 | SW 8 | SW 8 | W 6 | — | — | — | — | WSW 9 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 |
| kJ | 270 | 285 | 318 | 393 | 46 | — | — | — | — | 528 | 466 | 355 | 336 | 373 | 353 | 429 | 470 | 589 | 643 | 684 | 684 | 746 | 746 | 706 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 202 | 1435 | 202 | 202 | 1346 | 202 | 202 | 202 | 3 | 3 | 38 | 159 | 159 | 354 | 202 | 195 | 181 | 359 | 202 | 202 | 202 | 359 | 202 | 195 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||||||
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