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Surf Forecasts:
Jackals surfForecast / Simeulue Island / Indonesia
48hr Weather and Surf, issued 6 am Monday 18 May 2026 WIBForecast update in hr min s Forecast update imminent
Jackals surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Jackals sea temperature is
30.5° C
(Which is slightly warmer than usual)How big are the waves at Jackals today?
The current surf forecast for Jackals at 1PM is: 0.8m 17s primary swell from a South direction and 0.9m 8s secondary swell from a West direction, 0.8m 13s secondary swell from a South direction (forecast issued at 06:00am May 18). The wind direction is predicted to be cross-onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 2.5ft (0.7m) | 16s |
| Afternoon (18 May) | 3ft (0.9m) | 17s |
| Evening (18 May) | 3.5ft (1.1m) | 15s |
Table - waves today at Jackals. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 23mm), heaviest during Mon night. Warm (max 30°C on Mon morning, min 27°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 14 | SSW 13 | S 16 | S 17 | S 17 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | |
248 | 236 | 258 | 358 | 470 | 452 | 631 | 357 | 520 | 499 | 476 | 458 | 439 | 492 | 574 | 581 | 504 | 492 | 468 | 619 | 603 | 595 | 580 | 640 | |
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 | 7:33AM0.70m | 7:56PM0.36m | 8:18AM0.69m | 8:42PM0.33m | 9:05AM0.66m | 9:33PM0.30m | ||||||||||||||||||
Low Tide | 2:27PM-0.01m | 1:30AM0.00m | 3:18PM0.00m | 2:09AM0.03m | 4:13PM0.04m | |||||||||||||||||||
 |  |  | |  | | | | | | | | |  | | | | | | | |  | | | |
 | 6:24 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — | 6:24 |
 | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | 6:37 |
3 | 1 | — | 1 | — | 1 | 4 | 3 | 3 | 1 | — | — | — | — | 2 | 2 | 1 | 1 | 2 | 2 | — | — | — | — | |
Temp °C | 27 | 27 | 29 | 30 | 30 | 28 | 27 | 27 | 27 | 27 | 29 | 30 | 30 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 |
31 | 31 | 33 | 32 | 32 | 30 | 30 | 31 | 31 | 30 | 33 | 33 | 33 | 31 | 30 | 31 | 31 | 31 | 32 | 31 | 32 | 32 | 33 | 32 | |
Swell 1 Height (m) Direction Period (s) | W 9 | W 8 | W 8 | W 8 | W 8 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 |
 kJ | 145 | 138 | 109 | 109 | 108 | 452 | 631 | 357 | 520 | 499 | 476 | 458 | 439 | 420 | 407 | 395 | 395 | 377 | 347 | 619 | 603 | 595 | 580 | 640 |
Swell 2 Height (m) Direction Period (s) | S 14 | SSW 13 | S 13 | S 13 | S 17 | W 8 | W 8 | W 8 | SW 18 | W 8 | W 8 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | S 12 | S 12 | S 12 | S 9 | S 9 |
| kJ | 243 | 236 | 168 | 215 | 470 | 108 | 105 | 105 | 437 | 80 | 58 | 380 | 361 | 492 | 574 | 581 | 504 | 492 | 468 | 336 | 330 | 273 | 81 | 79 |
Swell 3 Height (m) Direction Period (s) | SW 14 | SW 14 | S 16 | S 17 | S 13 | SW 13 | SW 18 | SW 18 | W 8 | SW 18 | SW 17 | W 8 | W 8 | W 8 | — | — | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | S 12 | S 12 |
| kJ | 248 | 167 | 258 | 358 | 215 | 85 | 203 | 307 | 82 | 370 | 297 | 57 | 55 | 55 | — | — | 51 | 47 | 44 | 43 | 43 | 43 | 136 | 134 |
Wind waves Height (m) Direction Period (s) | — | NNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | W 7 | W 7 | — | — | — | — | — | — | — | — |
| kJ | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | 54 | 52 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 221 | 253 | 266 | 221 | 221 | 221 | 221 | 221 | 266 | 266 | 221 | 221 | 221 | 221 | 221 | 131 | 221 | 221 | 137 | 130 | 130 |
Best forecast wave conditions in Simeulue Island | ||||||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||||||
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