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Surf Forecasts:
4 Bobs surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 12 am Sunday 17 May 2026 WIBForecast update in hr min s Forecast update imminent
4 Bobs surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's 4 Bobs sea temperature is
30.4° C
(Which is slightly warmer than usual)How big are the waves at 4 Bobs today?
The current surf forecast for 4 Bobs at 4AM is: 1.1m 12s primary swell from a South-southwest direction and 0.8m 9s secondary swell from a West direction (forecast issued at 12:00am May 17). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3.5ft (1.0m) | 13s |
| Afternoon (17 May) | 3.5ft (1.0m) | 13s |
| Evening (17 May) | 3ft (0.9m) | 13s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 8mm), mostly falling on Sat night. Warm (max 29°C on Mon morning, min 27°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | ||||||||||||||||||||||
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 | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SSW 13 | SSW 12 | SSW 12 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | S 16 | S 16 | 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 | SW 16 | |
534 | 365 | 206 | 444 | 378 | 372 | 290 | 286 | 333 | 534 | 284 | 640 | 997 | 971 | 869 | 736 | 768 | 736 | 683 | 663 | 653 | 643 | 546 | 498 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | cross-off | glassy | glassy | glassy | glassy | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | on | glassy | glassy | glassy | glassy | off | off | off | glassy | |
High Tide | 6:16AM1.37m | 6:42PM0.85m | 7:00AM1.40m | 7:28PM0.82m | 7:46AM1.38m | 8:16PM0.78m | ||||||||||||||||||
Low Tide | 11:31PM0.01m | 12:46PM-0.03m | 00:14AM-0.01m | 1:33PM-0.04m | 00:58AM-0.01m | 2:21PM-0.02m | ||||||||||||||||||
 |  |  |  | |  |  | | |  | |  | | | | | | | | | | | | | |
 | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — |
2 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | |
Temp °C | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 28 | 29 | 29 | 29 | 28 |
30 | 28 | 29 | 31 | 32 | 32 | 33 | 32 | 31 | 32 | 31 | 30 | 32 | 33 | 34 | 32 | 33 | 32 | 32 | 32 | 33 | 33 | 33 | 32 | |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 12 | SSW 12 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | S 16 | SSW 12 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | SW 16 |
 kJ | 534 | 365 | 206 | 444 | 378 | 372 | 290 | 286 | 282 | 534 | 258 | 640 | 997 | 971 | 869 | 736 | 768 | 736 | 683 | 663 | 653 | 643 | 546 | 498 |
Swell 2 Height (m) Direction Period (s) | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | S 16 | S 13 | S 15 | SSW 12 | SW 19 | W 8 | W 8 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | S 9 |
| kJ | 122 | 96 | 96 | 96 | 99 | 101 | 101 | 78 | 333 | 206 | 267 | 244 | 236 | 51 | 36 | 199 | 375 | 370 | 304 | 297 | 260 | 366 | 498 | 140 |
Swell 3 Height (m) Direction Period (s) | N 4 | S 15 | S 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | W 9 | W 9 | S 17 | W 9 | W 9 | SW 19 | SW 19 | W 8 | W 8 | W 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | S 12 |
| kJ | 1 | 161 | 150 | 75 | 75 | 75 | 167 | 167 | 78 | 76 | 284 | 55 | 54 | 236 | 130 | 35 | 35 | 34 | 22 | 22 | 22 | 22 | 21 | 247 |
Wind waves Height (m) Direction Period (s) | — | — | N 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 2 | 11 | 7 | 7 | 2 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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