4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle12 Day Weather and Surf, issued 6 pm Sunday 04 Jan 2026 WIB
Forecast 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
29.1° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for 4 Bobs this week:

The surf forecast for 4 Bobs over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jan 05) at 1AM. The primary swell is predicted to be 1.5m and 9s period with a secondary swell of 0.6m and 14s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at 4 Bobs in the next 12 days are 1.8m 10s and forecast to arrive on Monday (Jan 05) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Saturday (Jan 10) at 10AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Mon 5th Jan)5ft (1.5m) 9s
Best Surf 7AM (Mon 5th Jan)5.5ft (1.7m) 10s
Most Powerful 1PM (Mon 5th Jan)6ft (1.8m) 10s

Table - best surf conditions forecast for 4 Bobs over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Sun afternoon. Warm (max 28°C on Sun afternoon, min 26°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 29mm), heaviest during Fri morning. Warm (max 28°C on Wed afternoon, min 26°C on Thu night). Wind will be generally light.

Sun
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Friday
09
Saturday
10
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
2
2
3
3
2
2
1
1
1
0
1
2
2
2
2
0
2
0
0
1
1
Swell
Height Map
Wave Height (m) & direction (?)
1.3
WSW
1.5
WSW
1.7
WSW
1.8
WSW
1.4
WSW
1.3
WSW
0.7
SSW
1
W
0.9
WSW
0.7
SSW
0.6
SSW
0.6
SSW
0.8
SSW
1
SSW
1.1
SSW
0.9
SSW
0.9
SSW
0.6
SW
0.9
SSW
0.8
SSW
0.7
SSW
Period(s) (?)991010981288121115151413131212121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)26638361064030821613414010711981148246389440295241121210164119
Wind
(km/h)
5
WSW
15
NW
15
NNW
10
NNW
10
NW
10
NNW
10
WSW
10
NNW
5
NW
10
WSW
5
WSW
5
WNW
5
WNW
5
NW
10
WNW
20
WSW
10
WNW
15
NNW
20
NNW
15
NNW
15
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
off
cross-
off
cross-
off
cross-
off
offcrosscross-
off
cross-
off
cross-
on
glassglasscross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
7:06PM
1.37
7:39AM
0.83
7:51PM
1.34
8:25AM
0.87
8:34PM
1.28
9:10AM
0.90
9:15PM
1.18
9:56AM
0.92
9:54PM
1.06
10:44AM
0.93
10:33PM
0.93
11:34AM
0.92
11:15PM
0.80
12:30PM
0.91
Low Tide
/ height (m)
1:41AM
-0.01
1:03PM
0.05
2:20AM
0.00
1:50PM
0.08
2:57AM
0.03
2:36PM
0.14
3:31AM
0.07
3:22PM
0.22
4:04AM
0.12
4:10PM
0.31
4:36AM
0.17
5:02PM
0.38
5:10AM
0.22
Sun
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Friday
09
Saturday
10
Sunrise--6:20--6:20--6:20--6:22--6:22--6:22--6:22
Sunset6:34--6:34--6:35--6:35--6:35--6:36--6:36--
thunderstorm
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
Rain (mm)
1---------52254452424
Temp. °C282728282728282828282827282727272627272628
Feels °C (?)323031303032303132303231313129272928282831
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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 12 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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