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Surf Forecasts:
Dewata surfForecast / West / Sri Lanka
48hr Weather and Surf, issued 10 pm Monday 18 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 6AM is: 1.2m 12s primary swell from a South direction and 0.6m 17s secondary swell from a South-southwest direction (forecast issued at 10:30pm May 18). An open ocean swell of 1.0m 6s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (+0530) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 4ft (1.2m) | 12s |
| Afternoon (19 May) | 3ft (0.9m) | 12s |
| Evening (19 May) | 2.5ft (0.8m) | 16s |
Table - waves today at Dewata. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon night. Warm (max 29°C on Tue morning, min 27°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||||||||
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 11 | SSW 11 | SSW 10 | S 12 | S 12 | S 12 | S 12 | SSW 16 | SSW 16 | SW 16 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | S 13 | S 13 | SSW 13 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | |
353 | 343 | 281 | 411 | 418 | 339 | 216 | 220 | 322 | 258 | 201 | 239 | 305 | 272 | 186 | 138 | 366 | 366 | 286 | 175 | 229 | 229 | 322 | 310 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | 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 | 3:38AM0.49m | 3:58PM0.62m | 4:19AM0.47m | 4:33PM0.57m | 5:05AM0.44m | 5:09PM0.51m | ||||||||||||||||||
Low Tide | 9:31PM0.05m | 9:17AM0.04m | 10:08PM0.06m | 9:57AM0.08m | 10:47PM0.08m | 10:40AM0.14m | ||||||||||||||||||
 | | | |  | | | | | | | | | | | |  |  | | |  | | | | |
 | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — |
 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:17 |
2 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | |
Temp °C | 28 | 27 | 27 | 27 | 28 | 29 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 |
31 | 29 | 29 | 29 | 30 | 31 | 30 | 31 | 31 | 29 | 28 | 30 | 30 | 29 | 29 | 30 | 30 | 30 | 30 | 29 | 30 | 30 | 30 | 29 | |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SSW 10 | S 12 | S 12 | S 12 | S 12 | WSW 6 | WSW 6 | WSW 6 | S 10 | S 10 | SSW 15 | S 10 | S 10 | S 10 | S 13 | S 13 | SSW 13 | S 10 | S 10 | S 10 | SSW 16 | SSW 16 |
 kJ | 353 | 343 | 281 | 411 | 418 | 339 | 216 | 118 | 122 | 122 | 136 | 131 | 305 | 128 | 98 | 128 | 366 | 366 | 286 | 100 | 104 | 104 | 322 | 310 |
Swell 2 Height (m) Direction Period (s) | W 6 | SW 16 | S 12 | SSW 17 | SSW 18 | SSW 18 | SSW 18 | S 11 | S 11 | S 11 | SSW 15 | SSW 14 | S 10 | SSW 15 | SSW 14 | SSW 14 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | S 10 | S 10 |
| kJ | 41 | 124 | 77 | 200 | 176 | 178 | 120 | 198 | 240 | 146 | 201 | 239 | 98 | 272 | 186 | 138 | 178 | 121 | 181 | 175 | 229 | 229 | 100 | 98 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | S 17 | SW 16 | S 16 | SW 14 | S 16 | S 16 | SSW 16 | SSW 16 | SW 16 | S 14 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SW 18 | SSW 16 | SSW 13 | SSW 13 | SSW 14 | S 20 | — |
| kJ | 100 | 50 | 124 | 82 | 54 | 79 | 79 | 220 | 322 | 258 | 59 | 37 | 37 | 66 | 124 | 123 | 207 | 150 | 181 | 118 | 118 | 121 | 7 | — |
Wind waves Height (m) Direction Period (s) | SW 6 | W 6 | W 6 | W 6 | WSW 6 | WSW 6 | WSW 6 | — | — | — | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | W 6 | WSW 6 |
| kJ | 133 | 41 | 58 | 76 | 82 | 110 | 128 | — | — | — | 122 | 110 | 127 | 127 | 121 | 134 | 134 | 134 | 160 | 160 | 165 | 165 | 188 | 165 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1144 | 661 | 661 | 1001 | 202 | 202 | 661 | 1213 | 1144 | 202 | 202 | 202 | 202 | 195 | 195 | 195 | 201 | 195 | 195 | 159 | 195 | 195 | 195 | 201 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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