Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle12 Day Weather and Surf, issued 6 am Saturday 06 Dec 2025 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 1.2°C warmer than normal for this time of year)


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 Saturday (Dec 06) at 4PM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 0.9m and 12s. 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 1.2m 14s and forecast to arrive on Friday (Dec 12) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Saturday (Dec 06) at 4PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Sat 6th Dec)3ft (0.9m) 14s
Best Surf 4PM (Sat 6th Dec)3ft (0.9m) 14s
Most Powerful 7PM (Fri 12th Dec)4ft (1.2m) 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 Heavy rain (total 21mm), heaviest during Sun night. Warm (max 28°C on Sat morning, min 25°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Thu night. Warm (max 28°C on Wed morning, min 25°C on Tue night). Wind will be generally light.

Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
2
2
2
2
2
2
2
1
2
2
1
2
2
2
1
2
1
1
2
2
Swell
Height Map
Wave Height (m) & direction (?)
0.9
SW
0.9
SSW
1.3
SSW
1.2
SSW
1.3
SSW
1
SSW
0.9
SW
0.9
SW
0.9
SW
1
SW
1.1
SW
1.1
SW
1
SW
1
SW
1
SW
1.1
SW
1.2
SW
1.2
SSW
1.2
SSW
1.1
SSW
1.1
SSW
Period(s) (?)121413121212161615141414141414141413141414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)223297536417485294376416365412459440384357373424564484545459447
Wind
(km/h)
5
SE
10
SE
0
SSE
10
SE
10
SSE
5
SW
10
S
15
SSW
10
WNW
5
WSW
10
SW
10
NW
10
S
10
S
5
NNW
10
ESE
15
SE
10
E
10
ESE
15
SE
0
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
off
glasscross-
off
cross-
off
glassoffoffcrosscross-
off
offcrossoffoffglasscrosscross-
off
crosscrosscross-
off
glass
High Tide
/ height (m)
8:33PM
1.93
9:38AM
1.19
9:19PM
1.89
10:21AM
1.21
10:05PM
1.80
11:07AM
1.23
10:50PM
1.66
11:54AM
1.24
11:36PM
1.49
12:45PM
1.25
12:24AM
1.30
1:41PM
1.27
1:21AM
1.13
Low Tide
/ height (m)
2:04PM
0.39
3:32AM
-0.09
2:51PM
0.38
4:15AM
-0.05
3:40PM
0.40
4:58AM
0.04
4:30PM
0.46
5:40AM
0.15
5:26PM
0.54
6:22AM
0.27
6:29PM
0.63
7:04AM
0.39
7:48PM
0.69
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Sunrise5:20--5:20--5:20--5:20--5:20--5:20--5:22--
Sunset-5:52--5:52--5:53--5:53--5:54--5:54--5:55-
part cloud
part cloud
thunderstorm
part cloud
clear
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
part cloud
part cloud
part cloud
clear
rain showers
clear
clear
thunderstorm
part cloud
part cloud
part cloud
Rain (mm)
--8--85--1----1--4---
Temp. °C282826282827282827272726282827282827292827
Feels °C (?)313130313031313030303030303132313030303030
  • 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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