Surf Forecasts:
4 Bobs surf forecast from 17 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,657 kJ wave energy.
Best Forecast Surf Conditions for 4 Bobs this week:
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 4PM. 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+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (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 24mm), heaviest during Tue night. Warm (max 28°C on Mon afternoon, min 27°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Thu night. Warm (max 28°C on Thu afternoon, min 27°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 14 | SW 21 | SSW 16 | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 18 |
Wave Graph | ||||||||||||||||||||
674 | 898 | 2888 | 2189 | 5273 | 5250 | 5657 | 4970 | 4348 | 3378 | 2682 | 2007 | 1950 | 3062 | 2662 | 2140 | 1667 | 1364 | 979 | 983 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | on | cross-on |
High Tide | 9:38PM1.10m | 9:38AM0.90m | 10:17PM1.05m | 10:09AM0.77m | 11:00PM0.97m | 10:39AM0.65m | 11:55PM0.90m | 11:18AM0.55m | 1:13AM0.85m | 1:48PM0.49m | 2:42AM0.85m | 3:37PM0.51m | 3:51AM0.91m | |||||||
Low Tide | 3:30AM0.20m | 3:27PM0.10m | 4:11AM0.27m | 3:57PM0.15m | 4:57AM0.34m | 4:30PM0.22m | 5:56AM0.41m | 5:11PM0.28m | 7:35AM0.45m | 6:09PM0.34m | 11:10AM0.39m | 7:39PM0.37m | ||||||||
— | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | |
6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | |
mm | — | — | 1 | — | 8 | 3 | 2 | 8 | 2 | — | 3 | — | — | — | — | — | 1 | 1 | — | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 |
Feels °C | 30 | 31 | 30 | 30 | 30 | 30 | 31 | 28 | 29 | 31 | 29 | 30 | 30 | 30 | 29 | 29 | 30 | 29 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 16 | SSW 16 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
674 | 531 | 2888 | 1397 | 5273 | 5250 | 5657 | 4970 | 4348 | 3378 | 2682 | 2007 | 1950 | 3062 | 2662 | 2140 | 1667 | 1364 | 979 | 902 | |
Swell 2 Height (m) Direction Period (s) | SSW 19 | SSW 18 | WNW 8 | SSW 19 | WSW 10 | — | WNW 10 | WNW 10 | WNW 10 | WNW 11 | SSW 22 | SSW 19 | SSW 18 | WNW 10 | WNW 9 | WNW 8 | SSW 23 | SSW 21 | SSW 19 | SSW 18 |
214 | 705 | 13 | 2189 | 10 | — | 10 | 20 | 20 | 22 | 91 | 949 | 1106 | 19 | 16 | 14 | 106 | 353 | 804 | 983 | |
Swell 3 Height (m) Direction Period (s) | SW 24 | SW 21 | WNW 8 | W 22 | W 10 | — | — | — | — | — | WNW 10 | WSW 11 | WNW 11 | W 16 | W 16 | S 24 | SSW 18 | WNW 8 | SSW 16 | SE 7 |
142 | 898 | 7 | 9 | 2 | — | — | — | — | — | 21 | 45 | 22 | 5 | 5 | 12 | 64 | 7 | 86 | 7 | |
Wind waves Height (m) Direction Period (s) | SSE 4 | — | — | S 9 | SW 8 | SW 10 | SW 10 | SW 10 | SW 10 | — | — | SSE 4 | SSE 5 | — | — | — | — | — | SSE 5 | SSE 6 |
5 | — | — | 127 | 23 | 47 | 51 | 50 | 51 | — | — | 12 | 14 | — | — | — | — | — | 26 | 25 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 7 | 7 | 7 | 103 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 103 | 155 | 103 | 7 | 7 | 489 | 7 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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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.











