4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle12 Day Weather and Surf, issued 12 pm Friday 26 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
29.0° 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 Sunday (Dec 28) at 1PM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 0.6m 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 1.4m 17s and forecast to arrive on Saturday (Dec 27) at 1AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Thursday (Jan 01) at 4AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Sun 28th Dec)3.5ft (1.1m) 14s
Best Surf 1PM (Sun 28th Dec)3.5ft (1.1m) 14s
Most Powerful 1AM (Sat 27th Dec)4.5ft (1.4m) 17s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 15mm), heaviest on Fri night. Warm (max 28°C on Sat morning, min 26°C on Fri morning). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 81mm), heaviest during Wed afternoon. Warm (max 28°C on Mon afternoon, min 24°C on Wed afternoon). Winds increasing (calm on Mon morning, fresh winds from the W by Wed afternoon).

Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
3
2
1
1
1
1
1
2
2
1
0
0
1
1
1
0
0
0
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
0.7
SW
1.1
SW
1.4
SW
1.4
SW
1.5
SW
1.2
SW
1.1
SW
1.1
SW
0.9
SW
0.7
SW
0.7
SW
0.6
SW
0.9
S
1
S
1
S
0.9
S
0.9
S
0.9
S
0.6
SSW
0.9
SSE
0.8
SSE
Period(s) (?)191817161615141413131313101010999141011
Wave
Graph
(?)Metric surfscale
Energy kJ (?)38071911799291087631529529261178175128161194177139139136156157150
Wind
(km/h)
0
W
10
SSW
15
SSW
10
SSE
10
S
10
S
5
SE
5
S
5
W
5
E
5
SW
10
W
5
NW
5
WNW
10
NNW
20
WNW
15
WNW
20
NW
15
W
10
W
10
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
on
oncross-
on
ononcross-
on
glassglassglasscross-
on
crossglassglasscross-
off
cross-
off
cross-
off
cross-
off
crosscrosscross-
off
High Tide
/ height (m)
10:03PM
1.01
11:14AM
0.86
10:49PM
0.92
12:16PM
0.91
11:51PM
0.81
1:24PM
0.98
1:14AM
0.72
2:32PM
1.06
2:45AM
0.67
3:35PM
1.15
4:02AM
0.66
4:34PM
1.23
Low Tide
/ height (m)
3:54PM
0.30
4:43AM
0.15
4:53PM
0.35
5:27AM
0.17
6:04PM
0.38
6:16AM
0.18
7:28PM
0.37
7:13AM
0.19
8:58PM
0.32
8:16AM
0.18
10:17PM
0.22
9:21AM
0.15
11:20PM
0.13
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Sunrise6:15--6:16--6:16--6:16--6:16--6:18--6:18--
Sunset-6:29--6:30--6:30--6:30--6:30--6:31--6:31-
cloud
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
part cloud
rain showers
thunderstorm
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
mod rain
thunderstorm
thunderstorm
mod rain
light rain
rain showers
Rain (mm)
--61-61-12-21-6103426911
Temp. °C272727282827272727272828272827252525252526
Feels °C (?)313030323130313131313131313230262727272829
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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