Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle12 Day Weather and Surf, issued 6 am Friday 19 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
29.2° 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 Saturday (Dec 20) at 7AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.4m and 13s. Another secondary swell of 1.4m and 6s is also forecast. 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 1.4m 17s and forecast to arrive on Wednesday (Dec 24) at 10PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Friday (Dec 19) at 1PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sat 20th Dec)4.5ft (1.4m) 10s
Best Surf 1PM (Wed 24th Dec)3ft (0.9m) 18s
Most Powerful10PM (Wed 24th Dec)4.5ft (1.4m) 17s

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 29mm), heaviest during Sat afternoon. Warm (max 30°C on Fri morning, min 26°C on Fri night). Winds decreasing (fresh winds from the WSW on Fri morning, calm by Sat night).

Days 3-6 Weather Summary Heavy rain (total 65mm), heaviest during Wed afternoon. Warm (max 30°C on Mon morning, min 24°C on Wed night). Wind will be generally light.

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
1
2
1
2
2
2
1
2
1
1
2
2
2
1
3
2
2
2
1
Swell
Height Map
Wave Height (m) & direction (?)
0.9
SW
1
SW
1
SW
1.4
SSW
1.5
SSW
1.3
SSW
1.3
SSW
1.1
SSW
0.8
SW
0.9
SW
0.9
SW
1.3
SSW
1.1
SW
0.9
SW
0.7
SSW
0.7
SSW
1
SSW
1.4
SSW
1.4
SSW
1.3
SSW
1
SSW
Period(s) (?)131313101010101015151413131315191816151413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)282321316388442295301227262309297599400245199383670974880732331
Wind
(km/h)
20
WSW
25
WSW
15
WNW
10
SW
20
W
5
NNE
10
SE
15
WSW
5
NNE
5
SE
20
WSW
5
N
5
SE
15
WSW
5
N
5
E
5
SW
10
E
10
NNE
5
WNW
5
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
crosscross-
off
cross-
off
glasscross-
off
cross-
off
onglasscross-
off
oncross-
off
cross-
off
glasscross-
on
glasscrossonglasscross-
on
High Tide
/ height (m)
7:36PM
1.56
8:50AM
1.06
8:13PM
1.61
9:22AM
1.10
8:48PM
1.63
9:54AM
1.13
9:21PM
1.64
10:26AM
1.17
9:54PM
1.62
10:58AM
1.21
10:26PM
1.58
11:30AM
1.25
11:00PM
1.50
Low Tide
/ height (m)
1:09PM
0.61
2:40AM
0.16
1:48PM
0.57
3:12AM
0.12
2:25PM
0.54
3:44AM
0.10
3:00PM
0.53
4:14AM
0.11
3:36PM
0.54
4:44AM
0.14
4:14PM
0.56
5:12AM
0.18
4:55PM
0.58
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Sunrise5:24--5:24--5:26--5:26--5:26--5:26--5:28--
Sunset-5:59--6:00--6:00--6:00--6:00--6:01--6:01-
part cloud
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
cloud
cloud
rain showers
Rain (mm)
-3-11031651105-5211922--3
Temp. °C302827302827282926302926292827292826262726
Feels °C (?)312829333032313230323130323131333331303131
  • 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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