Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle12 Day Weather and Surf, issued 12 am Monday 29 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 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 (Dec 29) at 7AM. The primary swell is predicted to be 1.2m and 9s period with a secondary swell of 0.8m and 13s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Batu Karas in the next 12 days are 1.9m 11s and forecast to arrive on Monday (Jan 05) at 7AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 6s period and expected on Friday (Jan 02) at 4AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Mon 29th Dec)4ft (1.2m) 9s
Best Surf 1PM (Thu 1st Jan)5.5ft (1.7m) 8s
Most Powerful 7AM (Mon 5th Jan)6ft (1.9m) 11s

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 10mm), heaviest on Tue night. Warm (max 28°C on Mon morning, min 24°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 38mm), heaviest during Fri night. Warm (max 28°C on Thu morning, min 24°C on Sat morning). Wind will be generally light.

Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sun
04
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
2
2
2
2
2
1
2
2
2
2
1
2
1
1
2
1
1
2
1
1
Swell
Height Map
Wave Height (m) & direction (?)
0.9
SW
1.3
S
1.3
S
1.3
S
1.5
S
1.5
S
1.5
S
1.5
S
1.5
S
1.5
S
2
W
1.8
W
1.4
SW
1.3
S
1.3
S
1.2
S
0.8
SSW
0.9
SSW
0.9
SSW
1
SSW
1.5
W
Period(s) (?)1499910101010111197111010101816151510
Wave
Graph
(?)Metric surfscale
Energy kJ (?)331264270270434461495450496524700348467332360284422475408405407
Wind
(km/h)
10
WSW
10
SSE
10
SSE
5
S
10
SSE
10
SSE
10
N
5
S
15
W
0
NW
10
E
20
WSW
15
W
15
W
20
WSW
15
WSW
20
W
5
NNW
5
NNE
5
NNE
5
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
on
glasscross-
off
glasscross-
on
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
on
glassoncross-
on
High Tide
/ height (m)
1:17AM
1.10
2:19PM
1.43
2:36AM
0.95
3:22PM
1.48
4:26AM
0.87
4:33PM
1.55
6:09AM
0.88
5:42PM
1.64
7:19AM
0.95
6:45PM
1.73
8:11AM
1.04
7:41PM
1.80
8:56AM
1.13
Low Tide
/ height (m)
7:22AM
0.46
9:17PM
0.57
8:12AM
0.54
10:50PM
0.47
9:19AM
0.60
12:09AM
0.32
10:41AM
0.62
1:11AM
0.18
11:58AM
0.58
2:02AM
0.07
1:05PM
0.52
2:47AM
-0.00
2:03PM
0.45
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sun
04
Sunrise-5:30--5:30--5:31--5:31--5:31--5:33--5:33-
Sunset--6:04--6:05--6:05--6:06--6:06--6:07--6:07
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
part cloud
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
mod rain
light rain
mod rain
heavy rain
mod rain
Rain (mm)
11----4132263--158282510
Temp. °C272828272828252826252828262828262625252424
Feels °C (?)303130303131293129293130273029292829292828
  • 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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