Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle16 Day Weather and Surf, issued 12 am Sunday 31 May 2026 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
29.8° C
(Which is 1.1°C warmer than normal for this time of year)

Batu Karas surf forecast from 31 May 2026:

  • Best quality surf: Wednesday 3 Jun, 1PM (local time) - 5.5ft (1.7m), 14s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 6 Jun, 7AM (local time) - 6ft (1.9m), 16s period, SSW swell with 1,904 kJ wave energy.
  • Next surfable swell (1★+): Sunday 31 May, 10AM (local time) - 4.5ft (1.3m), 12s period with SSW swell.

Best Forecast Surf Conditions for Batu Karas this week:

The surf forecast for Batu Karas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (May 31) at 10AM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 0.4m and 6s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Batu Karas in the next 16 days are 1.9m 16s and forecast to arrive on Saturday (Jun 06) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Friday (Jun 05) at 7AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sun 31st May)4.5ft (1.3m) 12s
Best Surf 1PM (Wed 3rd Jun)5.5ft (1.7m) 14s
Most Powerful 7AM (Sat 6th Jun)6ft (1.9m) 16s

Table - best surf conditions forecast for Batu Karas over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 28°C on Mon morning, min 24°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Thu night. Warm (max 28°C on Thu morning, min 23°C on Tue night). Wind will be generally light.

Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
1
1
1
1
1
2
2
3
3
1
2
2
2
3
1
1
1
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SSW
12
1.3
SSW
12
1.2
SSW
12
1
SSW
11
0.9
SSW
15
1.3
SSW
14
1.5
SSW
13
1.7
SSW
13
2
SSW
14
2.1
SSW
14
1.6
SSW
14
1.3
SSW
13
1.3
SSW
13
0.9
SSW
17
1.4
SW
16
1.4
SW
16
1.4
SW
16
1.3
SSW
18
1.8
SSW
16
1.7
SSW
16
1.8
SSW
16
Wave Graph
Metric surfscale
Energy kJ
488
472
359
251
358
638
745
894
1491
1541
955
624
528
481
1070
1057
980
954
1756
1555
1608
Wind (km/h)
5
ESE
15
SE
10
ENE
15
ESE
15
ESE
10
ENE
10
E
15
ESE
10
NNE
10
E
15
ESE
10
E
10
E
20
SE
10
ENE
5
E
20
ESE
15
E
15
E
20
ESE
20
ESE
glassy
cross-off
cross-on
cross
cross
cross-on
cross-on
cross
on
cross
cross
cross-on
cross
cross-off
cross-on
glassy
cross
cross
cross-on
cross
cross
High Tide
7:41AM1.59m
8:45PM1.10m
8:15AM1.61m
9:18PM1.11m
8:49AM1.62m
9:51PM1.11m
9:23AM1.61m
10:25PM1.11m
9:57AM1.57m
11:01PM1.11m
10:30AM1.52m
11:39PM1.12m
11:03AM1.45m
00:19AM1.13m
Low Tide
2:38PM0.15m
1:53AM0.53m
3:11PM0.12m
2:26AM0.51m
3:44PM0.13m
3:00AM0.52m
4:17PM0.15m
3:34AM0.54m
4:50PM0.19m
4:09AM0.58m
5:24PM0.24m
4:47AM0.64m
5:57PM0.30m
cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:52
5:52
5:52
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:34
5:34
5:34
5:34
5:35
5:35
5:35
1
1
1
5
9
Temp °C
26
27
26
28
28
25
27
27
26
26
27
26
28
28
27
27
28
27
28
28
27
28
29
28
29
29
26
29
28
28
28
28
28
30
30
30
32
30
30
30
30
29
Swell 1
Height (m)
Direction
Period (s)
1.3
SSW
12
1.3
SSW
12
1.2
SSW
12
1
SSW
11
0.9
SSW
11
1.3
SSW
14
1.5
SSW
13
1.7
SSW
13
2
SSW
14
2.1
SSW
14
1.6
SSW
14
1.3
SSW
13
1.3
SSW
13
1
S
12
1.4
SW
16
1.4
SW
16
1.4
SW
16
1.2
SW
14
1.8
SSW
16
1.7
SSW
16
1.8
SSW
16
Energy kJ
488
472
359
251
183
638
745
894
1491
1541
955
624
528
292
1070
1057
980
597
1756
1555
1608
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
6
0.4
SSW
16
0.8
SSW
16
0.7
SSW
15
0.9
SSW
15
0.6
SW
13
0.5
SSW
18
0.9
SSW
17
0.8
S
16
0.9
SSW
15
1.4
S
14
1.3
S
13
1.2
S
12
1
SSW
12
0.9
S
12
0.6
S
11
0.5
S
11
1.3
SSW
18
0.5
S
10
0.6
SSW
24
1
SSW
22
Energy kJ
13
103
326
196
358
113
180
423
338
377
790
586
441
325
221
81
57
954
54
437
879
Swell 3
Height (m)
Direction
Period (s)
0.3
SSW
18
0.1
W
10
0.1
W
10
0.6
SW
15
0.7
SW
14
0.3
SSW
20
0.1
W
9
0.2
SSW
21
0.5
S
15
0.5
SW
20
0.5
SW
19
0.9
SSW
18
0.9
SW
18
0.9
SSW
17
0.2
SSW
21
0.5
S
14
0.5
S
13
0.6
S
12
0.2
SSW
26
0.5
S
10
0.2
S
13
Energy kJ
61
2
2
174
206
75
2
45
104
186
184
547
465
481
45
106
88
97
66
51
14
Wind waves
Height (m)
Direction
Period (s)
0.4
ESE
6
0.5
SE
6
0.8
ESE
4
1
ESE
5
0.9
ESE
5
0.9
ESE
6
0.9
SE
6
1
SE
6
0.9
ESE
6
1.1
SE
6
1.1
SE
6
1
SE
6
1.1
SE
6
1.1
SE
6
1.1
SE
6
1.3
SE
6
1.2
SE
6
1.4
SE
6
1.6
ESE
7
1.5
ESE
7
1.6
SE
6
Energy kJ
14
15
25
49
46
47
49
68
57
91
91
73
75
80
77
108
109
139
229
199
216
Nearest Offshore or Glassy
Rating
(10 max)
2
2
3
3
3
3
3
4
4
4
4
4
3
4
3
3
3
4
4
4
4
Distance (km)
0
0
6
265
606
6
18
519
6
18
230
8
18
230
8
0
230
230
230
387
230
Best forecast wave conditions in Central Java
Rating
(10 max)
2
2
3
3
3
4
4
4
3
3
3
Best forecast wave conditions in Indonesia
Rating
(10 max)
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
7
6
5
5
4
5
5
6
4
4
5
5
5
4
5
8
5
5
7
9
9
  • 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 16 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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