4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle12 Day Weather and Surf, issued 12 am Friday 05 Dec 2025 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
29.6° C
(Which is 1.0°C warmer than 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 Friday (Dec 05) at 7AM. The primary swell is predicted to be 1.0m and 13s period with a secondary swell of 0.5m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at 4 Bobs in the next 12 days are 1.3m 14s and forecast to arrive on Tuesday (Dec 09) at 1PM. Winds are predicted to be glassy at the time the swell arrives.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Fri 5th Dec)3.5ft (1.0m) 13s
Best Surf 4AM (Mon 8th Dec)3ft (0.9m) 16s
Most Powerful 1PM (Tue 9th Dec)4.5ft (1.3m) 14s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 3mm), mostly falling on Fri night. Warm (max 28°C on Thu night, min 27°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 42mm), heaviest during Mon night. Warm (max 28°C on Wed morning, min 26°C on Sun night). Wind will be generally light.

Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thu
11
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
2
0
1
2
2
2
2
2
2
3
3
2
2
2
1
2
2
2
2
1
Swell
Height Map
Wave Height (m) & direction (?)
1
SW
0.9
SW
0.9
SW
0.9
SW
0.9
SW
0.8
SW
0.7
SW
1
SSW
0.9
SSW
0.8
SW
1
SW
1
SW
1.1
SW
1.1
SW
1.3
SSW
1.2
SSW
0.9
SW
0.9
SW
0.9
SW
1
SW
1
SW
Period(s) (?)131313131312121213161615151414141413141414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)321238238238230175140297252314502459543466630523317299304379357
Wind
(km/h)
5
SSE
0
NW
10
SSW
10
SSW
5
ESE
5
S
5
WNW
10
N
5
W
10
W
5
NNE
5
WNW
10
W
5
N
5
WNW
5
WSW
5
ENE
0
SW
10
NW
5
NNW
5
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassglasscross-
on
onglassglasscross-
off
offglasscross-
off
glassglasscrossglassglasscrossglassglasscross-
off
glasscross
High Tide
/ height (m)
6:06AM
0.80
6:24PM
1.41
6:54AM
0.80
7:11PM
1.40
7:43AM
0.79
7:58PM
1.36
8:32AM
0.79
8:46PM
1.28
9:25AM
0.78
9:35PM
1.18
10:23AM
0.78
10:26PM
1.06
11:27AM
0.79
Low Tide
/ height (m)
12:12AM
-0.00
11:32AM
0.01
1:00AM
-0.04
12:19PM
-0.00
1:47AM
-0.03
1:06PM
0.02
2:33AM
0.00
1:54PM
0.07
3:18AM
0.06
2:43PM
0.15
4:03AM
0.12
3:35PM
0.25
4:48AM
0.18
4:34PM
0.36
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thu
11
Sunrise-6:05--6:05--6:05--6:07--6:07--6:07--6:07-
Sunset--6:19--6:20--6:20--6:21--6:21--6:22--6:22
part cloud
part cloud
part cloud
thunderstorm
clear
clear
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
---1----28161321632822
Temp. °C282828282828282828272727272727272828272727
Feels °C (?)313231313232323232303131313030303232303130
  • 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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