Surf Forecasts:
4 Bobs surf forecast from 12 Aug 2026:
- Best quality surf: Friday 14 Aug, 1PM (local time) - 6.5ft (2.0m), 16s period, S swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,183 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 1PM (local time) - 6.5ft (2.0m), 16s period with S 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 Friday (Aug 14) at 1PM. The primary swell is predicted to be 2.0m and 16s period with a secondary swell of 0.4m and 21s. Another secondary swell of 1.3m and 10s 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 3.0m 17s and forecast to arrive on Wednesday (Aug 19) at 7PM. 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+) | 1PM (Fri 14th Aug) | 6.5ft (2.0m) 16s |
| Best Surf | 1PM (Fri 14th Aug) | 6.5ft (2.0m) 16s |
| Most Powerful | 7PM (Wed 19th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for 4 Bobs over the next 16 days.
Short Range ForecastHeavy rain (total 47mm), heaviest during Fri night. Warm (max 28°C on Wed afternoon, min 26°C on Fri afternoon). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Sun morning. Warm (max 28°C on Mon afternoon, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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) | S 16 | S 16 | S 14 | S 18 | S 17 | S 16 | S 15 | S 14 | S 14 | S 13 | S 15 | S 15 | S 15 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 16 | SSW 19 | SSW 19 |
Wave Graph | ||||||||||||||||||||
2002 | 1788 | 1303 | 1946 | 2316 | 1978 | 2465 | 1626 | 1036 | 663 | 1190 | 865 | 711 | 834 | 622 | 492 | 1050 | 2669 | 2046 | 4574 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | cross-on | cross-on | glassy | cross-on | glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:20PM0.86m | 6:32AM1.31m | 7:03PM0.97m | 7:14AM1.30m | 7:43PM1.05m | 7:53AM1.24m | 8:22PM1.11m | 8:30AM1.15m | 9:00PM1.12m | 9:05AM1.03m | 9:38PM1.10m | 9:38AM0.90m | 10:17PM1.05m | |||||||
Low Tide | 11:50PM0.09m | 12:58PM0.01m | 00:40AM0.06m | 1:31PM-0.01m | 1:26AM0.06m | 2:01PM-0.01m | 2:09AM0.08m | 2:31PM0.02m | 2:50AM0.13m | 2:59PM0.05m | 3:30AM0.20m | 3:27PM0.10m | ||||||||
— | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | |
6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | |
mm | — | 4 | 2 | 4 | 11 | 4 | 5 | 14 | 3 | 1 | 4 | 6 | — | — | — | — | — | — | — | 1 |
Temp °C | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 27 |
Feels °C | 30 | 30 | 31 | 30 | 29 | 30 | 31 | 30 | 31 | 30 | 29 | 30 | 30 | 30 | 29 | 31 | 29 | 30 | 31 | 28 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | S 14 | S 18 | S 17 | S 16 | S 15 | S 14 | S 14 | S 13 | S 15 | S 15 | S 15 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 16 | SSW 16 | SSW 19 |
2002 | 1788 | 1303 | 1946 | 2316 | 1978 | 2465 | 1626 | 1036 | 663 | 1190 | 865 | 711 | 834 | 622 | 492 | 1050 | 2669 | 1455 | 4574 | |
Swell 2 Height (m) Direction Period (s) | S 21 | S 20 | S 18 | S 12 | WNW 11 | SSW 22 | SSW 20 | SW 16 | SSW 17 | S 16 | SW 16 | SW 15 | SW 15 | WNW 9 | SSW 19 | SSW 19 | SSW 13 | WNW 8 | SSW 19 | WNW 10 |
79 | 276 | 784 | 678 | 12 | 91 | 239 | 203 | 516 | 526 | 295 | 269 | 212 | 15 | 148 | 329 | 475 | 13 | 2046 | 10 | |
Swell 3 Height (m) Direction Period (s) | WNW 9 | WNW 10 | WNW 10 | SW 15 | SSW 23 | WNW 11 | WNW 11 | SSW 20 | S 18 | SW 16 | WNW 10 | WNW 9 | WNW 9 | SW 26 | SW 24 | SW 23 | SW 22 | S 10 | WNW 8 | — |
7 | 9 | 11 | 54 | 53 | 12 | 12 | 298 | 231 | 302 | 10 | 17 | 16 | 26 | 87 | 140 | 553 | 68 | 13 | — | |
Wind waves Height (m) Direction Period (s) | — | SSE 4 | — | — | S 10 | S 11 | — | — | — | — | — | — | SSE 3 | — | — | SE 3 | — | — | — | S 8 |
— | 16 | — | — | 506 | 516 | — | — | — | — | — | — | 2 | — | — | 3 | — | — | — | 64 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 103 | 155 | 11 | 103 | 11 | 2 | 0 | 7 | 0 | 7 | 7 | 7 | 7 | 11 | 7 | 7 | 2 | 2 | 7 | 7 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.











