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Surf Forecasts:
4 Bobs surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 6 pm Sunday 31 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
30.3° C
(Which is slightly warmer than usual)How big are the waves at 4 Bobs today (31 May):
- Afternoon surf: Afternoon surf (31 May, local time) - 4.5ft (1.4m), 12s period with SSW swell.
- Evening surf: Evening surf (31 May, local time) - 4.5ft (1.3m), 12s period with SSW swell.
The current surf forecast for 4 Bobs at 11PM is: 1.3m 12s primary swell from a South-southwest direction and 0.7m 16s secondary swell from a South-southwest direction (forecast issued at 06:00pm May 31). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | - | - |
| Afternoon (31 May) | 4.5ft (1.4m) | 12s |
| Evening (31 May) | 4.5ft (1.3m) | 12s |
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 Sun night. Warm (max 28°C on Sun afternoon, min 27°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sun 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||||||||
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 | 4 AM | 7 AM | 10 AM | 1 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | |
589 | 469 | 461 | 454 | 402 | 436 | 455 | 576 | 568 | 612 | 617 | 929 | 902 | 774 | 712 | 850 | 700 | 690 | 781 | 892 | 487 | 991 | 581 | 537 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | cross-off | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | |
High Tide | 6:40PM0.73m | 6:48AM1.16m | 7:15PM0.71m | 7:23AM1.15m | 7:50PM0.70m | 7:57AM1.13m | ||||||||||||||||||
Low Tide | 11:51PM0.14m | 1:12PM0.11m | 00:27AM0.13m | 1:46PM0.11m | 1:04AM0.14m | |||||||||||||||||||
 |  |  |  | |  |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:20 | — | — | — |
 | 6:20 | — | — | — | — | — | — | — | 6:21 | — | — | — | — | — | — | — | 6:21 | — | — | — | — | — | — | 6:21 |
1 | 1 | — | — | 2 | — | — | — | — | 1 | — | — | 1 | — | — | — | — | — | — | — | 1 | 1 | — | — | |
Temp °C | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 |
33 | 33 | 33 | 33 | 32 | 32 | 33 | 32 | 32 | 32 | 32 | 33 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 31 | 32 | 32 | 32 | 32 | |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 11 | SSW 11 |
 kJ | 589 | 469 | 461 | 454 | 372 | 337 | 280 | 576 | 568 | 612 | 617 | 929 | 902 | 774 | 712 | 850 | 700 | 690 | 781 | 892 | 378 | 991 | 463 | 455 |
Swell 2 Height (m) Direction Period (s) | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | WNW 7 | SSW 20 | SSW 8 | SSW 8 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 10 | SSW 10 | SSW 15 | SSW 15 |
| kJ | 119 | 193 | 234 | 330 | 402 | 436 | 455 | 275 | 226 | 226 | 161 | 11 | 76 | 51 | 68 | 182 | 246 | 348 | 336 | 276 | 227 | 270 | 581 | 537 |
Swell 3 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | SSW 20 | WNW 7 | SSW 20 | SSW 19 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | SW 20 | SSW 16 | SW 20 | SW 20 | SW 20 |
| kJ | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 39 | 11 | 75 | 143 | 5 | 5 | 5 | 5 | 134 | 487 | 239 | 239 | 186 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||||||
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