Surf Forecasts:
4 Bobs surf forecast from 2 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 4AM (local time) - 5ft (1.6m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 10PM (local time) - 7ft (2.2m), 16s period, S swell with 2,511 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 4AM (local time) - 5ft (1.6m), 16s period with SSW swell.
Best Forecast Surf Conditions for 4 Bobs this week:
The surf forecast for 4 Bobs over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 4AM. The primary swell is predicted to be 1.6m and 16s period with a secondary swell of 0.4m and 15s. Another secondary swell of 1.6m and 9s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at 4 Bobs in the next 16 days are 2.2m 16s and forecast to arrive on Tuesday (Sep 08) at 10PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 9th Sep) | 5ft (1.6m) 16s |
| Best Surf | 4AM (Wed 9th Sep) | 5ft (1.6m) 16s |
| Most Powerful | 10PM (Tue 8th Sep) | 7ft (2.2m) 16s |
Table - best surf conditions forecast for 4 Bobs over the next 16 days.
Short Range ForecastHeavy rain (total 30mm), heaviest during Wed night. Warm (max 28°C on Wed night, min 27°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Sat night. Warm (max 28°C on Sat night, min 27°C on Sat night). Winds decreasing (fresh winds from the SSE on Sun afternoon, light winds from the SSE by Tue afternoon). | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 17 | SSW 17 | SSW 18 | SSW 16 | S 18 | SSW 15 | SSW 14 | SSW 14 | SSW 19 | SSW 18 | S 18 | SSW 16 | SSW 15 | SSW 15 | SSE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 928 | 915 | 890 | 581 | 458 | 346 | 958 | 665 | 515 | 1016 | 404 | 627 | 660 | 415 | 455 | 1122 | 653 | 1466 | 1010 | 857 | 494 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | glassy |
High Tide | 9:30AM0.81m | 10:18PM1.09m | 10:12AM0.69m | 11:20PM1.03m | 11:19AM0.58m | 00:51AM0.99m | 1:44PM0.54m | 2:31AM1.01m | 3:31PM0.61m | 3:47AM1.07m | 4:35PM0.73m | 4:45AM1.15m | 5:22PM0.87m | ||||||||
Low Tide | 3:37PM0.09m | 4:47AM0.25m | 4:19PM0.15m | 5:59AM0.33m | 5:14PM0.23m | 7:47AM0.35m | 6:36PM0.30m | 9:44AM0.29m | 8:24PM0.31m | 10:43AM0.21m | 9:54PM0.26m | 11:23AM0.13m | 10:59PM0.18m | ||||||||
 | |  | | | | |  | | | | | | | | | | | | | | |
 | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — |
 | — | 6:23 | — | — | 6:23 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — |
mm | 4 | 4 | 3 | 2 | 1 | 6 | 2 | — | 2 | 2 | 2 | 1 | 3 | 1 | 4 | 2 | 3 | 11 | — | — | 11 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 31 | 32 | 31 | 32 | 31 | 28 | 29 | 28 | 28 | 28 | 27 | 30 | 29 | 28 | 31 | 31 | 30 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 17 | SSW 17 | SSW 14 | SSW 16 | SSW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 18 | S 18 | SSW 16 | SSW 15 | SSW 15 | SSW 14 |
| kJ | 928 | 915 | 890 | 581 | 458 | 346 | 958 | 665 | 515 | 1016 | 373 | 627 | 660 | 415 | 303 | 1122 | 653 | 1466 | 1010 | 857 | 494 |
Swell 2 Height (m) Direction Period (s) | W 16 | SSE 7 | SSE 8 | WNW 8 | SSW 17 | SSW 16 | WNW 9 | SSW 13 | SSW 18 | S 20 | S 18 | S 16 | SW 21 | SSW 20 | SSW 19 | SSW 12 | SSW 17 | SSE 15 | S 14 | SSW 19 | SSW 18 |
| kJ | 20 | 132 | 96 | 6 | 99 | 273 | 8 | 257 | 443 | 268 | 404 | 329 | 117 | 256 | 455 | 169 | 573 | 42 | 94 | 37 | 491 |
Swell 3 Height (m) Direction Period (s) | W 16 | — | WNW 8 | W 8 | WNW 8 | WNW 8 | W 13 | WNW 8 | S 21 | W 11 | SSW 16 | W 10 | W 10 | SSE 18 | SSW 22 | SSE 16 | SSW 12 | — | SSE 11 | W 10 | SW 15 |
| kJ | 20 | — | 6 | 1 | 6 | 6 | 4 | 7 | 36 | 9 | 295 | 2 | 2 | 30 | 154 | 49 | 129 | — | 41 | 2 | 77 |
Wind waves Height (m) Direction Period (s) | SSE 6 | — | — | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | SSE 8 | SSE 8 | SSE 8 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 11 | SSE 11 |
| kJ | 123 | — | — | 110 | 110 | 86 | 138 | 191 | 162 | 319 | 364 | 414 | 380 | 371 | 371 | 329 | 295 | 383 | 326 | 691 | 467 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 7 | 7 | 2 | 7 | 2 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 341 | 7 | 2 | 7 | 7 | 7 | 7 | 0 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our 4 Bobs surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the 4 Bobs Surf forecast
The above surf forecast table for 4 Bobs provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at 4 Bobs can be found by selecting the local surf guide option on the grey menu. Our 4 Bobs surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (4 Bobs) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for 4 Bobs may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Mentawi Islands? If you are looking for accommodation near 4 Bobs, camping, hotels and holiday cottages in Mentawi Islands, consider staying in Padang which is 157 km (98 miles) away.
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