Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle12 Day Weather and Surf, issued 6 pm Sunday 11 Jan 2026 WIB
Forecast update in hr  min  s Forecast update imminent
Batu Karas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Batu Karas sea temperature is
29.6° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Batu Karas this week:

The surf forecast for Batu Karas over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jan 12) at 10AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.3m and 13s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Batu Karas in the next 12 days are 1.4m 14s and forecast to arrive on Sunday (Jan 18) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Sunday (Jan 18) at 7PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10AM (Mon 12th Jan)4ft (1.2m) 10s
Best Surf 1PM (Sun 18th Jan)4ft (1.2m) 14s
Most Powerful 4PM (Sun 18th Jan)4.5ft (1.4m) 14s

Table - best surf conditions forecast for Batu Karas over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 19mm), heaviest on Sun night. Warm (max 30°C on Tue morning, min 24°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Wed night. Warm (max 30°C on Sat morning, min 25°C on Fri night). Wind will be generally light.

Sun
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
1
1
0
2
2
Swell
Height Map
Wave Height (m) & direction (?)
1.1
S
1.3
S
1.2
S
1.2
S
1.2
S
1.1
S
1.1
S
1
S
0.8
SW
0.9
SW
1
SW
1.1
SW
1.1
SW
1
SW
1
SW
0.9
SW
0.9
SW
1
SW
1.1
SW
1.1
SW
1.2
SW
Period(s) (?)101010101010101016151514141414141413161514
Wave
Graph
(?)Metric surfscale
Energy kJ (?)233367284279290230225190318370447410410398393341341352628605606
Wind
(km/h)
20
WSW
15
WNW
15
W
25
WSW
15
WNW
15
W
25
WSW
20
W
15
W
25
WSW
20
W
25
WSW
25
WSW
25
W
20
W
25
WSW
20
W
20
WSW
25
WSW
15
W
5
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crosscross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
on
High Tide
/ height (m)
1:19AM
0.98
2:11PM
1.35
2:21AM
0.84
3:09PM
1.31
4:37AM
0.76
4:25PM
1.29
7:06AM
0.80
5:40PM
1.33
7:54AM
0.87
6:40PM
1.40
8:25AM
0.95
7:27PM
1.49
8:52AM
1.04
Low Tide
/ height (m)
8:06PM
0.61
7:06AM
0.53
9:28PM
0.63
7:34AM
0.62
11:14PM
0.59
8:20AM
0.70
12:39AM
0.50
10:08AM
0.76
1:30AM
0.39
11:50AM
0.74
2:07AM
0.29
12:55PM
0.69
2:38AM
0.21
Sun
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunrise--5:37--5:37--5:37--5:39--5:39--5:39--5:39
Sunset6:08--6:09--6:09--6:09--6:09--6:10--6:10--
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
rain showers
clear
part cloud
clear
part cloud
thunderstorm
thunderstorm
part cloud
rain showers
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
Rain (mm)
573-31----21-11------
Temp. °C272629282630292630292729282728282630292629
Feels °C (?)282831282729292728292728272729272629292731
  • 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 Batu Karas Surf forecast

The above surf forecast table for Batu Karas provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Batu Karas can be found by selecting the local surf guide option on the grey menu. Our Batu Karas 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 (Batu Karas) 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 Batu Karas 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.

Batu Karas is 43 km (27 miles) from the city of Sidareja. If you plan a holiday in Central Java, look for hotels and other accommodation in Sidareja. Sidareja has rooms for a wide range of budgets as well as car hire and transport links.

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