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Surf Forecasts:
Dewata surfForecast / West / Sri Lanka
48hr Weather and Surf, issued 4 am Sunday 17 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
29.4° C
(Which is normal for this time of year)How big are the waves at Dewata today?
The current surf forecast for Dewata at 7AM is: 1.6m 12s primary swell from a South-southwest direction and 0.3m 15s secondary swell from a South-southwest direction (forecast issued at 04:30am May 17). An open ocean swell of 1.0m 7s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 5ft (1.6m) | 12s |
| Afternoon (17 May) | 5ft (1.6m) | 12s |
| Evening (17 May) | 4.5ft (1.4m) | 11s |
Table - waves today at Dewata. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 35mm), heaviest during Sun morning. Warm (max 29°C on Mon afternoon, min 28°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 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 |    |    |    | |||||||||||||||||||||
SSW 8 | S 12 | SSW 12 | SW 7 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SW 6 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SW 6 | SSW 12 | SSW 12 | S 12 | S 12 | S 11 | SSW 16 | SW 16 | |
207 | 650 | 680 | 286 | 725 | 589 | 579 | 400 | 415 | 499 | 513 | 147 | 353 | 353 | 353 | 359 | 154 | 514 | 522 | 411 | 384 | 295 | 322 | 258 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 2:23AM0.49m | 2:46PM0.67m | 3:00AM0.50m | 3:22PM0.66m | 3:38AM0.49m | 3:58PM0.62m | ||||||||||||||||||
Low Tide | 8:01AM0.02m | 8:57PM0.05m | 8:38AM0.02m | 9:31PM0.05m | 9:17AM0.04m | 10:08PM0.06m | ||||||||||||||||||
 | |  | | | |  | | | | | | | | | | | | | | | | | | |
 | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — |
6 | 3 | 2 | 5 | 3 | 2 | — | — | — | — | 2 | 3 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | |
Temp °C | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 |
28 | 30 | 29 | 30 | 29 | 30 | 30 | 31 | 30 | 30 | 30 | 30 | 31 | 30 | 30 | 30 | 29 | 30 | 29 | 29 | 31 | 30 | 30 | 30 | |
Swell 1 Height (m) Direction Period (s) | SSW 8 | S 12 | SSW 12 | SSW 15 | W 6 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 14 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | S 12 | SSW 12 | SSW 12 | S 12 | S 12 | S 11 | S 11 | WSW 6 |
 kJ | 207 | 650 | 680 | 44 | 38 | 589 | 579 | 400 | 415 | 499 | 513 | 62 | 353 | 353 | 353 | 359 | 77 | 514 | 522 | 411 | 384 | 295 | 289 | 97 |
Swell 2 Height (m) Direction Period (s) | S 12 | SSW 15 | SSW 15 | SSW 21 | SSW 21 | W 6 | W 6 | W 6 | SW 18 | SSW 18 | SSW 18 | SW 17 | SSW 16 | SSW 16 | W 6 | W 6 | SW 16 | SSW 17 | SSW 18 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | S 11 |
| kJ | 139 | 84 | 42 | 45 | 44 | 48 | 48 | 48 | 83 | 123 | 121 | 77 | 102 | 102 | 30 | 23 | 124 | 200 | 176 | 178 | 120 | 220 | 322 | 185 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SW 22 | SSW 22 | SSW 21 | SE 8 | SW 20 | SW 20 | S 13 | S 14 | S 14 | S 14 | S 18 | S 14 | S 13 | SSW 16 | SW 16 | S 16 | S 16 | SW 14 | S 16 | S 16 | W 9 | W 9 | SW 16 |
| kJ | 121 | 19 | 45 | 45 | 11 | 98 | 97 | 92 | 58 | 34 | 33 | 26 | 32 | 32 | 100 | 124 | 48 | 82 | 54 | 79 | 79 | 14 | 14 | 258 |
Wind waves Height (m) Direction Period (s) | WSW 7 | WSW 7 | W 7 | SW 7 | SSW 12 | SW 6 | SW 6 | — | W 6 | — | — | SW 6 | W 6 | W 6 | SW 6 | SW 6 | SW 6 | W 6 | W 6 | WSW 6 | W 6 | WSW 6 | WSW 6 | — |
| kJ | 114 | 111 | 89 | 286 | 725 | 247 | 223 | — | 49 | — | — | 147 | 31 | 31 | 146 | 119 | 154 | 41 | 42 | 80 | 88 | 94 | 94 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 866 | 445 | 866 | 445 | 866 | 866 | 866 | 866 | 866 | 866 | 866 | 866 | 866 | 1985 | 2033 | 1985 | 1001 | 1001 | 1144 | 1051 | 1051 | 202 | 202 | 1096 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||||||
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