4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle12 Day Weather and Surf, issued 12 am Saturday 17 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
29.3° 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 Saturday (Jan 17) at 10AM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.6m and 16s. Another secondary swell of 1.0m and 6s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at 4 Bobs in the next 12 days are 1.4m 18s and forecast to arrive on Wednesday (Jan 21) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Jan 17) at 1PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sat 17th Jan)2.5ft (0.8m) 12s
Best Surf 4AM (Wed 21st Jan)4ft (1.2m) 13s
Most Powerful10PM (Wed 21st Jan)4.5ft (1.4m) 18s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 36mm), heaviest during Sat morning. Warm (max 29°C on Sun morning, min 26°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 48mm), heaviest during Wed night. Warm (max 28°C on Tue morning, min 26°C on Tue night). Wind will be generally light.

Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Fri
23
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
2
1
2
2
3
3
2
2
2
2
2
3
4
4
3
3
3
2
2
2
Swell
Height Map
Wave Height (m) & direction (?)
0.8
SW
0.8
SW
1
SW
1
SW
1
SW
0.9
SSW
1.4
SW
1.3
SSW
1.4
SSW
1.3
SSW
1.2
SSW
1.2
SSW
1.2
SSW
0.9
SSW
1.2
S
1.4
SSW
1.6
SSW
1.7
SSW
1.5
SSW
1.3
SSW
1.3
SSW
Period(s) (?)131216151417171616151414142019181615141313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)24221748943541252812218229217305235305536941081123111951240886577538
Wind
(km/h)
15
NW
25
NNW
15
NW
15
NW
20
NW
15
WNW
15
WSW
25
NW
20
NW
20
WNW
25
NW
25
NW
15
NW
15
NNW
15
NNW
20
NW
20
NW
20
NW
15
NW
20
WNW
15
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
5:52AM
0.63
5:59PM
1.11
6:30AM
0.69
6:35PM
1.17
7:04AM
0.74
7:08PM
1.20
7:37AM
0.80
7:38PM
1.22
8:09AM
0.86
8:08PM
1.21
8:41AM
0.92
8:37PM
1.17
9:14AM
0.97
Low Tide
/ height (m)
12:06AM
0.22
10:48AM
0.23
12:33AM
0.16
11:34AM
0.18
1:02AM
0.11
12:16PM
0.15
1:30AM
0.08
12:56PM
0.13
1:59AM
0.05
1:35PM
0.13
2:29AM
0.04
2:16PM
0.14
2:59AM
0.04
2:58PM
0.17
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Fri
23
Sunrise-6:26--6:26--6:26--6:26--6:26--6:26--6:28-
Sunset--6:38--6:38--6:38--6:38--6:39--6:39--6:39
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
Rain (mm)
4744147238424531435551
Temp. °C272828272929262828272828272828272828272726
Feels °C (?)292830293031272929292728302930282929282728
  • 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

Latest Updates

submit an eyeball surf report

Quick surf report for 4 Bobs:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our 4 Bobs surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest