Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle12 Day Weather and Surf, issued 12 am Thursday 11 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
29.1° 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 Thursday (Dec 11) at 4AM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 0.8m and 8s. 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 1.3m 15s and forecast to arrive on Thursday (Dec 18) at 1AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Dec 14) at 4AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Thu 11th Dec)3.5ft (1.1m) 14s
Best Surf 4AM (Thu 11th Dec)3.5ft (1.1m) 14s
Most Powerful 1AM (Thu 18th Dec)4.5ft (1.3m) 15s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 9mm), mostly falling on Thu night. Warm (max 30°C on Sat morning, min 25°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Sat night. Warm (max 29°C on Mon morning, min 26°C on Sat night). Wind will be generally light.

Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wed
17
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
2
2
2
2
2
2
1
1
2
1
2
0
1
1
2
2
2
2
2
2
Swell
Height Map
Wave Height (m) & direction (?)
1
SW
1.2
SW
0.9
SW
1.3
SSW
1.2
SSW
1.1
SSW
1.1
SSW
1.1
SSW
1.1
SSW
1.4
SSW
0.9
SSW
0.9
SSW
1.1
SSW
1.2
SSW
0.9
S
0.9
SW
0.9
SW
0.9
SW
0.9
SW
1
SW
1
SW
Period(s) (?)141414131314131312121212999131312161615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)368540308520491465440414365522247243197208130282273205381502453
Wind
(km/h)
5
W
5
SE
15
S
10
SW
15
SSW
15
SW
10
W
20
SW
20
WSW
15
WSW
15
SW
15
SW
15
WSW
20
SW
15
SSW
10
SSW
15
SSW
15
SSW
10
WSW
10
WSW
15
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassglassoffoffoffoffcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
offoffoffoffcross-
off
cross-
off
off
High Tide
/ height (m)
11:36PM
1.49
12:45PM
1.25
12:24AM
1.30
1:41PM
1.27
1:21AM
1.13
2:42PM
1.29
2:38AM
0.98
3:45PM
1.32
4:23AM
0.90
4:42PM
1.36
5:56AM
0.91
5:33PM
1.40
6:57AM
0.94
6:17PM
1.45
Low Tide
/ height (m)
6:22AM
0.27
6:29PM
0.63
7:04AM
0.39
7:48PM
0.69
7:48AM
0.50
9:24PM
0.69
8:39AM
0.59
10:56PM
0.62
9:38AM
0.65
12:04AM
0.51
10:41AM
0.68
12:52AM
0.40
11:38AM
0.67
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wed
17
Sunrise-5:20--5:22--5:22--5:22--5:22--5:22--5:24-
Sunset--5:54--5:55--5:55--5:57--5:57--5:58--5:58
part cloud
clear
clear
thunderstorm
thunderstorm
clear
clear
clear
clear
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
part cloud
part cloud
clear
part cloud
thunderstorm
thunderstorm
part cloud
Rain (mm)
---81----42-41----32-
Temp. °C272928272828263029272828272928272928272827
Feels °C (?)313029303029293029292930293030303130303129
  • 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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