Surf Forecasts:
4 Bobs surf forecast from 12 Oct 2026:
- Best quality surf: Tuesday 20 Oct, 4AM (local time) - 6.5ft (2.0m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 19 Oct, 10AM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,072 kJ wave energy.
- Next surfable swell (1★+): Tuesday 20 Oct, 4AM (local time) - 6.5ft (2.0m), 14s 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 Tuesday (Oct 20) at 4AM. The primary swell is predicted to be 2.0m and 14s period with a secondary swell of 1.1m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at 4 Bobs in the next 16 days are 2.5m 16s and forecast to arrive on Monday (Oct 19) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 20th Oct) | 6.5ft (2.0m) 14s |
| Best Surf | 4AM (Tue 20th Oct) | 6.5ft (2.0m) 14s |
| Most Powerful | 10AM (Mon 19th Oct) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for 4 Bobs over the next 16 days.
Short Range ForecastModerate rain (total 18mm), heaviest on Tue night. Warm (max 28°C on Tue morning, min 27°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Fri night. Warm (max 28°C on Thu night, min 27°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | |||||||||||||||
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) | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 18 | SW 16 | SW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1148 | 2080 | 1174 | 928 | 1250 | 1335 | 823 | 813 | 683 | 410 | 350 | 289 | 319 | 610 | 587 | 750 | 924 | 1010 | 3072 | 2723 | 1847 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross |
High Tide | 7:35AM0.91m | 7:48PM1.22m | 8:05AM0.83m | 8:19PM1.16m | 8:34AM0.75m | 8:50PM1.08m | 9:00AM0.68m | 9:22PM1.00m | 9:27AM0.61m | 10:00PM0.91m | 10:04AM0.55m | 11:00PM0.84m | 12:55PM0.53m | 00:49AM0.81m | |||||||
Low Tide | 1:07PM0.05m | 2:01AM0.07m | 1:36PM0.07m | 2:35AM0.11m | 2:05PM0.11m | 3:10AM0.18m | 2:37PM0.17m | 3:51AM0.25m | 3:12PM0.24m | 4:41AM0.32m | 3:55PM0.33m | 5:49AM0.38m | 4:58PM0.42m | ||||||||
 |  |  | |  | | | | | | | | | | | | | | | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:12 | — | — | 6:12 | — | — | 6:12 | — | — | 6:12 | — |
mm | 3 | — | 5 | 2 | — | 6 | — | — | 2 | — | — | 6 | 1 | — | 3 | 3 | 2 | 17 | 5 | — | 5 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 31 | 30 | 30 | 32 | 31 | 32 | 32 | 31 | 32 | 31 | 30 | 30 | 31 | 30 | 29 | 31 | 30 | 28 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 16 | SSW 15 | SSW 14 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | S 11 | S 11 | S 11 | S 9 | SW 16 | SW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 16 | SSW 16 | SSW 15 |
| kJ | 690 | 2080 | 1174 | 928 | 1250 | 1335 | 823 | 813 | 683 | 300 | 240 | 227 | 165 | 610 | 587 | 750 | 924 | 1010 | 3072 | 2723 | 1847 |
Swell 2 Height (m) Direction Period (s) | SSW 17 | — | SW 17 | S 16 | S 15 | S 14 | S 13 | S 13 | S 12 | SW 15 | SW 14 | SW 14 | SW 18 | SSW 11 | SSW 10 | SSW 11 | SSW 11 | SSW 18 | — | — | — |
| kJ | 1148 | — | 297 | 249 | 275 | 242 | 503 | 209 | 336 | 410 | 350 | 289 | 319 | 38 | 20 | 85 | 105 | 692 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 18 | — | S 18 | S 16 | S 15 | — | SSW 11 | SSE 6 | — | SW 21 | SSW 20 | SSW 19 | SW 14 | W 15 | — | — | — | SSW 10 | — | — | — |
| kJ | 370 | — | 101 | 134 | 279 | — | 48 | 43 | — | 18 | 38 | 143 | 181 | 4 | — | — | — | 55 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 5 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | — | — | SSE 7 | — | — | — | — | SSE 8 | S 12 | SSE 6 | SSE 6 | SSE 5 | SSE 5 | SSE 6 | SSE 6 |
| kJ | — | 40 | 82 | 110 | 75 | 59 | — | — | 45 | — | — | — | — | 105 | 444 | 72 | 66 | 55 | 69 | 60 | 93 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 389 | 7 | 7 | 7 | 7 | 2 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 2 | 7 | 2 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
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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