Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle12 Day Weather and Surf, issued 6 am Tuesday 23 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
29.3° 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 Tuesday (Dec 23) at 10AM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 0.8m and 13s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Batu Karas in the next 12 days are 1.7m 16s and forecast to arrive on Saturday (Dec 27) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (Dec 27) at 10PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10AM (Tue 23rd Dec)3.5ft (1.1m) 10s
Best Surf 1PM (Wed 24th Dec)3.5ft (1.0m) 18s
Most Powerful 1PM (Sat 27th Dec)5.5ft (1.7m) 16s

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 11mm), heaviest on Tue night. Warm (max 29°C on Tue morning, min 26°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 22mm), heaviest during Fri night. Warm (max 29°C on Fri morning, min 26°C on Fri night). Wind will be generally light.

Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
2
1
2
3
3
3
2
2
2
2
3
2
2
3
2
1
2
2
2
2
Swell
Height Map
Wave Height (m) & direction (?)
1.1
S
0.8
SW
0.8
SW
0.8
SSW
1.1
SSW
1.5
SSW
1.4
SSW
1.3
SSW
1.3
SSW
1.2
SSW
1
SW
1.4
SW
1.3
SW
1.5
SW
1.4
SW
1.2
SW
1.1
SW
0.9
SW
1.3
S
1.3
S
1.5
S
Period(s) (?)1013131918161514131318181616151414149910
Wave
Graph
(?)Metric surfscale
Energy kJ (?)257202208486790116586973255345862111118341115927590529331264264479
Wind
(km/h)
5
S
15
SW
5
NW
0
ENE
5
SSE
5
NNW
5
SSE
15
SW
10
W
15
SW
15
SW
15
WSW
20
WSW
20
WSW
15
W
15
SW
15
SW
5
WSW
10
S
10
SSE
0
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcrossglasscross-
off
glasscross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
glass
High Tide
/ height (m)
10:26AM
1.17
9:54PM
1.62
10:58AM
1.21
10:26PM
1.58
11:30AM
1.25
11:00PM
1.50
12:05PM
1.29
11:37PM
1.39
12:43PM
1.34
12:21AM
1.25
1:26PM
1.39
1:17AM
1.10
2:19PM
1.43
2:36AM
0.95
Low Tide
/ height (m)
3:36PM
0.54
4:44AM
0.14
4:14PM
0.56
5:12AM
0.18
4:55PM
0.58
5:41AM
0.24
5:41PM
0.61
6:11AM
0.30
6:38PM
0.62
6:44AM
0.38
7:49PM
0.62
7:22AM
0.46
9:17PM
0.57
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Sunrise5:26--5:26--5:28--5:28--5:28--5:28--5:30--
Sunset-6:00--6:01--6:01--6:02--6:02--6:04--6:04-
clear
thunderstorm
thunderstorm
part cloud
clear
part cloud
part cloud
thunderstorm
thunderstorm
rain showers
part cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
-17----211-83-5113331
Temp. °C292927282826292927292827282826282826282726
Feels °C (?)333131313230333131313031292928303030323030
  • 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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